CN110067732B - Hand-held electric air pump - Google Patents
Hand-held electric air pump Download PDFInfo
- Publication number
- CN110067732B CN110067732B CN201910424206.XA CN201910424206A CN110067732B CN 110067732 B CN110067732 B CN 110067732B CN 201910424206 A CN201910424206 A CN 201910424206A CN 110067732 B CN110067732 B CN 110067732B
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- China
- Prior art keywords
- air pump
- cavity
- piston
- hand
- air
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- 230000007704 transition Effects 0.000 claims abstract description 72
- 230000009467 reduction Effects 0.000 claims abstract description 20
- 241000271510 Agkistrodon contortrix Species 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000007423 decrease Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 13
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000003825 pressing Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
A hand-held electric air pump comprises an air pump body, a transmission module, a power supply, a cylinder body and a piston. The air pump body comprises a shell and a copper head, the transmission module comprises a motor, a driving gear and a reduction gear, the motor is accommodated in the shell, the driving gear is arranged on an output shaft of the motor, the reduction gear is meshed with the driving gear, and an eccentric table is arranged on the reduction gear; the power supply is arranged on the shell, the cylinder body is provided with a transition cavity and an air cavity, the piston comprises a connecting rod, an external ring and a piston ring, the external ring is covered on the eccentric table, the piston ring is sleeved on the connecting rod, and the piston ring is positioned in the air cavity. The transmission module is used for driving the piston to move in the cylinder body so as to inflate external parts, adjusting the structure of the piston and improving the air supply rate of the air pump.
Description
Technical Field
The invention relates to an air pump, in particular to a handheld electric air pump.
Background
The hand-held electric air pump is driven by an electric motor and is used for completing some inflation work, such as inflation operation on balloons, basketball, swim rings, automobile tires and the like, and is also suitable for occasions needing inflation in the machining or mechanical assembly process. Compared with the prior manual tool, the handheld electric air pump greatly facilitates the daily inflation and processing operation of workers or users.
However, when the piston in the existing hand-held electric air pump moves in the cylinder body, a special air inlet is required to be arranged on the cylinder body for external air to enter the cylinder body, a one-way valve is required to be arranged in the air inlet to prevent air from overflowing through the air inlet when the piston pumps air, the air inlet and the one-way valve are arranged to occupy space on the cylinder body, and the space inside the hand-held air pump is limited, which means that the available volume of the cylinder body is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a handheld electric air pump, which optimizes the structures of a piston and a cylinder body, improves the utilization rate of the internal space of the air pump cylinder body and further improves the air pump inflation efficiency.
The aim of the invention is realized by the following technical scheme:
a hand-held electric air pump comprising: the air pump comprises an air pump body, a transmission module, a power supply, a cylinder body, a piston and a driving plate;
the air pump body comprises a shell and a copper head, the shell is provided with an air outlet, the copper head is arranged on the inner side wall of the shell, and the copper head is communicated with the air outlet;
The transmission module comprises a motor, a driving gear and a reduction gear, wherein the motor is accommodated in the shell, the driving gear is arranged on an output shaft of the motor, the reduction gear is meshed with the driving gear, and an eccentric table is arranged on the reduction gear;
the power supply is arranged at one end of the shell far away from the air outlet;
The driving plate is arranged on the shell and is electrically connected with the motor and the power supply respectively;
The cylinder body is provided with a transition cavity and an air cavity, the air cavity is communicated with the transition cavity, the copper head is connected with the outer wall of the cylinder body, and the copper head is communicated with the transition cavity;
The piston comprises a connecting rod, an external ring and a piston ring, wherein the connecting rod and the external ring are of an integrated structure, the external ring is covered on the eccentric table, the piston ring is sleeved on one end of the connecting rod, which is far away from the external ring, the piston ring is positioned in the air cavity, the outer wall of the piston ring is attached to the inner wall of the air cavity, the outer diameter of the piston ring is gradually decreased from one side, which is close to the transition cavity, to one side, which is far away from the transition cavity, of the piston ring, and the motor is used for driving the piston ring to reciprocate along the inner wall of the air cavity.
In one embodiment, the eccentric table is a cylindrical structure.
In one embodiment, the outer ring has an inner diameter greater than the diameter of the eccentric table.
In one embodiment, the piston ring comprises a fastening block and a deformation block, wherein the fastening block is sleeved on the connecting rod, and the deformation block is arranged on the outer wall of the fastening block and is attached to the inner wall of the air cavity.
In one embodiment, the deformation block is annular, and the outer diameter of the deformation block decreases from one end close to the transition cavity to one end far away from the transition cavity.
In one embodiment, a bearing is embedded in the outer ring.
In one embodiment, the transition chamber further comprises a one-way valve embedded in the transition chamber.
In one embodiment, the housing is provided with a grip portion and a working portion, the motor is located in the grip portion, and the piston and the cylinder are both located in the working portion.
In one embodiment, the axis of the grip portion and the axis of the working portion are perpendicular to each other.
In one embodiment, the drive gear and the reduction gear are spur gears.
Above-mentioned hand-held type electronic air pump is through setting up air pump body, transmission module, power, cylinder body and piston, and transmission module is used for driving the piston and carries out the piston motion in the cylinder body in order to aerify the external part to adjust the structure of piston and cylinder body, improve the air pump's air-filling rate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hand-held electric air pump according to an embodiment of the invention;
FIG. 2 is an exploded view of the internal pump body of the hand-held electric air pump of FIG. 1;
FIG. 3 is a schematic view showing the working state of the piston in the cylinder when the eccentric table is positioned at the near point position according to an embodiment of the present invention;
FIG. 4 is a schematic view of the piston of FIG. 3 in an intermediate state during piston movement within the cylinder;
FIG. 5 is a schematic view of the piston in the cylinder when the eccentric table of FIG. 3 is in the far point position;
FIG. 6 is an exploded view of a power supply in an embodiment of the invention;
FIG. 7 is a schematic view of a partial structure of a grip portion of the housing;
FIG. 8 is an enlarged partial schematic view of FIG. 5 at A;
fig. 9 is a schematic diagram of the distribution of four quadrant points in the motion trajectory of the eccentric table.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a hand-held electric air pump 10 includes: the air pump body 100, the transmission module 200, the power supply 300, the cylinder body 400, the piston 500 and the driving plate 130, wherein the power supply 300 is used for providing electric energy for the transmission module 200, so that the transmission module 200 drives the piston 500 to perform piston movement in the cylinder body 400, and a buffer structure is arranged on the piston 500, so that the swing amplitude of the piston 500 during movement is reduced, and the abrasion loss between the piston 500 and the cylinder body 400 during movement of the piston is reduced.
Referring to fig. 1 and 2, the air pump body 100 includes a housing 110 and a copper head 120, the housing 110 is provided with an air outlet, the copper head 120 is disposed on an inner sidewall of the housing 110, and the copper head 120 is communicated with the air outlet; the transmission module 200 includes a motor 210, a driving gear 220 and a reduction gear 230, wherein the driving gear 220 and the reduction gear 230 are spur gears. The motor 210 is accommodated in the housing 110, the driving gear 220 is mounted on an output shaft of the motor 210, the reduction gear 230 is meshed with the driving gear 220, and the reduction gear 230 is provided with an eccentric table 231; the power supply 300 is arranged at one end of the shell 110 far away from the air outlet, the driving plate 130 is arranged on the shell 110, the driving plate 130 is respectively electrically connected with the motor 210 and the power supply 300, and the power supply 300 supplies power to the motor 210 through the driving plate 130; wherein the center line of the eccentric table 231 is parallel to the center axis of the reduction gear 230, and the distance from the center line of the eccentric table 231 to the center axis of the reduction gear 230 is the radius of gyration of the eccentric table 231.
When the motor 210 is started, the driving gear 220 is driven to rotate, when the driving gear 220 rotates, the reduction gear 230 rotates, the eccentric table 231 on the reduction gear 230 starts to rotate by taking the axial line of the reduction gear 230 as the center, and the piston 500 is stirred to move in the cylinder 400 in the rotating process. The copper head 120 is located at the air outlet of the housing 110 and is connected to an external inflation tube, and compressed air generated by the hand-held electric air pump 10 is introduced into the product to be inflated through the inflation tube.
Referring to fig. 3, a cylinder 400 is provided with a transition cavity 410 and an air cavity 420, the air cavity 420 is communicated with the transition cavity 410, a copper head 120 is connected with the outer wall of the cylinder 400, and the copper head 120 is communicated with the transition cavity 410; i.e. the cylinder 400 has two cavities inside, the piston 500 is located in the air cavity 420, and the piston moves in the air cavity 420, compressing air into the transition cavity 410, i.e. the air cavity 420 compresses air, the compressed air is input into the transition cavity 410 for stabilizing pressure, and when the hand-held electric air pump 10 is connected with the product to be inflated, the compressed air in the transition cavity 410 is the same as the product inside.
Referring to fig. 2 and 3, the piston 500 includes a connecting rod 510, an external ring 520 and a piston ring 530, wherein the connecting rod 510 and the external ring 520 are integrally formed, the external ring 520 is covered on the eccentric table 231, the outer wall of the eccentric table 231 is tangent to the inner wall of the external ring 520, the piston ring 530 is sleeved on one end of the connecting rod 510 far away from the external ring 520, the piston ring 530 is located in the air cavity 420, the outer wall of the piston ring 530 is attached to the inner wall of the air cavity 420, the outer diameter of the piston ring 530 decreases from one side close to the transition cavity 410 to one side far away from the transition cavity 410, and the motor 210 rotates to drive the piston ring 530 to reciprocate along the inner wall of the air cavity 420.
In the process of reciprocating the piston ring 530 along the inner wall of the air cavity 420, the air pressure in the cylinder 400 will change, specifically, when the piston ring 530 moves towards the direction approaching the transition cavity 410, the air pressure in the air cavity 420 at the side approaching the transition cavity 410 will increase, the pressure acting on the end of the piston ring 530 approaching the transition cavity 410 will be greater than the pressure acting on the end of the piston ring 530 far from the transition cavity 410, and because the outer diameter of the piston ring 530 decreases from the side approaching the transition cavity 410 to the side far from the transition cavity 410, namely, the air pressure acting on the piston ring 530 will make the outer wall of the piston ring 530 cling to the inner wall of the air cavity 420, so as to improve the air tightness of the air pump in the air pumping process; conversely, when the piston ring 530 moves away from the transition chamber 410, the air pressure in the air chamber 420 at the side away from the transition chamber 410 increases, and the pressure acting on the end of the piston ring 530 away from the transition chamber 410 is greater than the pressure acting on the end of the piston ring 530 near the transition chamber 410, and because the outer diameter of the piston ring 530 decreases from the side near the transition chamber 410 to the side away from the transition chamber 410, that is, the air pressure acting on the piston ring 530 causes a gap between the outer wall of the piston ring 530 and the inner wall of the air chamber 420 for the external air to enter, thereby completing the air intake action. Therefore, a special air inlet structure is not required to be arranged on the cylinder body in the air pumping process, the limited space in the cylinder body is saved, and the amount of compressed air generated during the movement of the piston is further increased, so that the air supply efficiency of the air pump is improved.
The external ring 520 is in a circular ring structure, the eccentric table 231 can stir the external ring 520 to displace along with the rotation, the piston ring 530 is always positioned in the air cavity 420, the inner wall of the air cavity 420 limits the movable range of the piston ring 530, so that the piston ring can only linearly displace along the inner wall of the air cavity 420, namely, the piston moves, and the movement sequence can be seen in fig. 3 to 5.
Referring to fig. 7 and 8, further, in order to improve the service life of the piston ring 530 and improve the efficiency of delivering gas by the piston motion, the piston ring 530 includes a fastening block 531 and a deformation block 532, the fastening block 531 is sleeved on the connecting rod 510, the deformation block 532 is disposed on an outer wall of the fastening block 531 and is attached to an inner wall of the air cavity 420, and the fastening block 531 and the deformation block 532 are integrally formed. The deformation block 532 is annular, and the outer diameter of the deformation block 532 decreases from the end near the transition chamber 410 to the end far from the transition chamber 410.
Referring to fig. 7 and 8, the fastening block 531 is used for connecting with the connecting rod 510, the deformation block 532 is attached to the inner wall of the air cavity 420 to improve the sealing degree between the piston ring 530 and the inner wall of the air cavity 420, the air cavity 420 is divided into a compression section 421 and a buffer section 422 by the piston ring 530, wherein the compression section 421 is communicated with the transition cavity 410, when the piston ring 530 moves towards the direction approaching the transition cavity 410, the volume of the compression section 421 is reduced, and the air in the compression section 421 is compressed, the pressure is increased, and is extruded into the transition cavity 410; when the piston ring 530 moves away from the transition chamber 410, the volume of the compression section 421 becomes large, the air pressure in the compression section 421 becomes small, and at this time, the air pressure of the buffer section 422 is larger than the air pressure in the compression section 421, and the air of the buffer section 422 enters the compression section 421 and is compressed in the next piston movement, entering the transition chamber 410.
Referring to fig. 3,4 and 5, it should be noted that when the piston ring 530 moves toward the transition chamber 410, the air pressure in the compression section 421 is greater than the air pressure in the buffer section 422, that is, the direction of the air pressure force acting on the piston ring 530 is directed away from the transition chamber 410 from the position close to the transition chamber 410, and the outer diameter of the deformation block 532 decreases from the end close to the transition chamber 410 to the end far from the transition chamber 410, and the resultant force of the air pressure acts on the end face of the deformation block 532 close to the transition chamber 410, so as to promote the deformation block 532 to open, so that the deformation block 532 is tightly attached to the inner wall of the air chamber 420, and the sealing degree between the piston ring 530 and the air chamber 420 is maintained by the compressed air; when the piston ring 530 moves away from the transition chamber 410, the air pressure in the compression section 421 is smaller than the air pressure in the buffer section 422, that is, the direction of the air pressure force acting on the piston ring 530 is from the position away from the transition chamber 410 to the position close to the transition chamber 410, and because the outer diameter of the deformation block 532 decreases from the end close to the transition chamber 410 to the end away from the transition chamber 410, that is, the deformation block becomes a truncated cone, at this time, the resultant force of the air pressure acts on the end surface of the deformation block 532 away from the transition chamber 410, that is, the conical surface of the truncated cone, the resultant force of the air pressure force can slightly deform the deformation block 532, so that a gap is formed between the outer wall of the deformation block 532 and the inner wall of the air cavity 420, and air enters the compression section 421 through the gap, so that no special air inlet and one-way valve are needed to be additionally arranged on the cylinder 400 to provide an air inlet path, so that the structure of the hand-held electric air pump 10 is more compact.
Referring to fig. 9, specifically, the rotation track of the eccentric table 231 is circular, and includes four quadrant points, namely a far point 231a farthest from the cylinder 400, a near point 231b nearest to the cylinder 400, and two offset peak points 231c, when the eccentric table 231 rotates to the far point 231a, the piston ring 530 is farthest from the transition chamber 410, when the eccentric table 231 rotates to the near point 231b, the piston ring 530 is nearest to the transition chamber 410, and the central axes of the connecting rods 510 and the central axes of the air chambers 420 in the two states coincide; when the eccentric table 231 rotates to the position deviating from the peak point 231c, the piston ring 530 is located at the center position of the piston movement distance, and at the moment, the offset between the central axis of the connecting rod 510 and the central axis of the air cavity 420 is the largest, namely the swing amplitude of the piston 500 is the largest.
In order to prevent the piston ring 530 from being displaced away from the transition chamber 410, the compressed air in the transition chamber 410 is pumped out, and the hand-held electric air pump 10 further includes a check valve embedded in the transition chamber 410. And the one-way valve is positioned between the transition chamber 410 and the air chamber 420 to prevent the compressed air in the transition chamber 410 from flowing back into the air chamber 420.
Referring to fig. 1, further, in order to facilitate the holding of the user, the housing 110 is provided with a holding portion 112 and a working portion 113, the motor 210 is located in the holding portion 112, the piston 500 and the cylinder 400 are located in the working portion 113, and the axis of the holding portion 112 and the axis of the working portion 113 are perpendicular to each other, i.e. the holding portion 112 and the working portion 113 form a gun-shaped structure, so as to improve the comfort level of the user holding the hand-held electric air pump 10.
Referring to fig. 1, the requirements of different products on air pressure in the inflation process are different, for example, the air pressure in the automobile tire is far greater than the air pressure in the balloon, that is, when the different products are inflated, the hand-held electric air pump 10 is required to provide compressed air with different pressures, that is, the hand-held electric air pump 10 is required to have the capability of regulating air pressure, in order to meet the inflation requirements of the different products, the hand-held electric air pump 10 further comprises an air pressure regulating assembly 700, the air pressure regulating assembly 700 comprises a main control panel 710, a display 720, a control panel 730, a conducting tube 740 and an air pressure sensor 750, the control panel 730 is covered on the housing 110, the display 720 is embedded on the control panel 730, the air pressure sensor 750 is accommodated in the housing 110, the conducting tube 740 is arranged between the air pressure sensor 750 and the cylinder 400, and the air pressure sensor 750 is respectively communicated with the transition cavity 410 and the air pressure sensor 750, that is, the air pressure sensor 750 is used for monitoring the electric signal in the transition cavity 410, the main control panel 710, the main control panel 720, the main control panel 710, the main control panel 130 and the air pressure sensor 750 are respectively connected with the electric signal collector panel 710, the electric signal collector panel 730 and the air pressure sensor 710 are respectively, and the electric signal collector panel 730 are respectively connected to the main control panel 710 and the air pressure sensor panel 710. The transition cavity 410 is communicated with the air pressure sensor 750 through the conduit 740, wherein the air pressure inside the transition cavity 410 is the output air pressure of the hand-held electric air pump, the air pressure sensor 750 is communicated with the transition cavity 410 to directly measure the air pressure inside the transition cavity 410, and the detected data are converted into electric signals to be fed back to the main control board 710 and finally displayed in the display 720. When different products are inflated, the control panel 730 sets the air pressure value, the control panel 730 transmits the equipment constant value to the main control panel 710, and further controls the rotation speed of the motor 210, so as to control the air pressure in the transition cavity 410, and achieve the purpose of controlling the hand-held electric air pump.
Referring to fig. 1, the main control board 710 and the air pressure sensor 750 are vulnerable components, the main control board 710 and the air pressure sensor 750 need to be protected, the air pressure regulating component further comprises a protecting cover 760, a clamping ring is arranged on the outer wall of the protecting cover 760, a mounting hole is formed in the housing 110, a limit cavity is formed in the wall of the mounting hole, the protecting cover 760 penetrates through the mounting hole, the clamping ring is embedded in the limit cavity, the air pressure sensor 750 and the PCB control panel 730 are accommodated in the protecting cover 760, the control panel 730 is covered on the protecting cover 760, the control panel 730 and the protecting cover 760 enclose a protecting cavity, the main control board 710 and the air pressure sensor 750 are both positioned in the protecting cavity, namely, independent cavities are formed in the handheld electric air pump 10 and are specially used for accommodating the main control board 710, the air pressure sensor 750 and other components, so that the vulnerable components collide with the vulnerable components when the piston 500 works, and the internal components of the housing 110 are distributed more orderly, and maintenance operation is facilitated.
Specifically, the control panel 730 is provided with a plurality of buttons, a user inputs inflation parameters, such as output air pressure and inflation speed of the hand-held electric air pump, after the hand-held electric air pump 10 is connected with a product, the hand-held electric air pump is started to inflate, the air pressure sensor 750 feeds air pressure in the transition cavity 410 back to the main control panel 710, the main control panel 710 converts the air pressure into an electric signal, and the electric signal is displayed on the display 720 in a digital form, wherein the air pressure sensor 750 mainly comprises a controller of the air pressure sensor 750, the air pressure sensor can be a digital pressure gauge on the market or an air pressure probe without a display function, the air pressure electric signal is transmitted to the main control panel 710, a corresponding control program is arranged in the main control panel 710, the air pressure electric signal is converted into a display electric signal to be transmitted to the display 720, and the control panel 730 is mainly used for setting the inflation parameters for the user, and the control process is common knowledge in the industry and will not be described.
Compared with the traditional air pump, the hand-held electric air pump has the characteristics of small volume and convenient carrying, which means that the hand-held electric air pump can not be limited by places and cables when in inflation operation, and can perform inflation operation whenever and wherever possible, but because of the portable characteristic, the hand-held electric air pump is supported by a power supply arranged in the air pump when in use, namely the size of the power supply capacity determines the duration of the operation time of the hand-held electric air pump, at present, the power supply of the hand-held electric air pump on the market is integrated with the air pump body, the power supply is arranged in the air pump, when the air pump is exhausted, the air pump cannot work at the moment, the charging operation can be performed again after the charging operation is completed, and because the power supply and the air pump are integrated, the charging process has certain inconvenience, because the air pump is provided with certain quality, when the position of a home socket is higher, the air pump is required to be supported, otherwise, the charging connector cannot bear the weight of the air pump alone, and cannot be kept in butt joint with the socket, in addition, if the air pump is charged on the car, the car occupies a certain volume, when the air pump occupies a lot of space, particularly, the passengers in the car is provided with a certain space, and the car is occupied by passengers, the car is provided with a battery module set, and the comfort level is lowered, and the car set is solved, and the car set is provided with the battery box 320, and the passengers 300, and the car box is particularly the car box is lowered with the battery box is provided with the battery box and the battery box 320 and the battery box is the passengers.
Referring to fig. 6, the battery case 330 includes an upper case 331, a lower case 332, an elastic member and a limit button 333, wherein the battery pack 310 is accommodated in the lower case 332, and the upper case 331 is covered with the lower case 332;
referring to fig. 6, the upper case 331 has a limiting cavity 331a, a side surface of the upper case 331 away from the lower case 332 has a limiting hole 331b and a pressing hole 331c, the limiting hole 331b and the pressing hole 331c are both communicated with the limiting cavity 331a, and a space is provided between the pressing hole 331c and the limiting hole 331 b;
Referring to fig. 6, the limit button 333 is accommodated in the limit cavity 331a, the limit button 333 includes a pressing portion 333a, a gear portion 333b, and a connecting portion 333c, the pressing portion 333a and the gear portion 333b are respectively located at two ends of the connecting portion 333c, the connecting portion 333c is located in the limit cavity 331a, the pressing portion 333a is disposed through the pressing hole 331c, and the gear portion 333b is disposed through the limit hole 331b;
Referring to fig. 6, the elastic member is accommodated in the limiting cavity 331a, and two ends of the elastic member respectively abut against the connecting portion 333c and the bottom surface of the limiting cavity 331a, and the elastic member is configured to push the connecting portion 333c to move in a direction away from the bottom surface of the limiting cavity 331 a;
Referring to fig. 6, a guiding chute 331d is formed on an outer side wall of the upper case 331, a buckle 114 and a positioning slot 115 are provided on the housing 110, the buckle 114 is located in the guiding chute 331d, and the gear 333b is configured to abut against an inner side wall of the positioning slot 115;
Referring to fig. 6, the sliding-vane module 320 includes a blade 321 and a copper terminal 322, the blade 321 is disposed on the driving plate 130, and the blade 321 is electrically connected to the motor 210 and the air pressure regulating component 700, the copper terminal 322 is disposed on the upper case 331, and the copper terminal 322 is electrically connected to the battery pack 310, and the blade 321 is used for attaching to the copper terminal 322.
Referring to fig. 6, when the power supply 300 is connected to the housing 110, the buckle 114 is slid into the guiding chute 331d
When the buckle 114 on the upper shell 331 is embedded in the guiding chute 331d, the buckle 114 can slide along the inner wall of the guiding chute 331d, so that the positioning groove 115 of the upper shell 331 is continuously close to the gear part 333b of the limit button 333 until the gear part 333b is embedded in the positioning groove 115, the buckle 114 cannot slide on the guiding chute 331d, the power supply 300 is mounted in place at this time, the knife 321 is attached to the copper binding post 322, i.e. the battery pack 310 is communicated with the motor 210 in the housing 100 and the air pressure regulating assembly 700.
Referring to fig. 6, when the electric quantity of the battery pack 310 in the power supply 300 is exhausted, the standby power supply 300 needs to be replaced, only the pressing portion 333a of the limit button 333 needs to be pressed at this time, the elastic member is compressed and contracted, at this time, the limit button 333 is sunk, the gear portion 333b is sunk into the limit cavity 331a, the power supply 300 is enabled to slide out along the extending direction of the guide chute 331d by applying a pushing force, that is, the power supply 300 with exhausted electric quantity is taken down, the standby power supply 300 is attached to the holding portion of the housing 110, and then slides along the extending direction of the guide chute 331d until the gear portion 333b enters the positioning groove 115 under the action of the elastic member, and the replaced power supply 300 is charged independently, without moving the whole hand-held electric air pump 10 to the charging position for charging, so that the hand-held electric air pump 10 is suitable for the working condition of continuous operation, more space can be saved, and more convenience in charging can be achieved.
Further, when the practical handheld electric air pump 10 inflates different products, the situation that the nozzle needs to be replaced can be met, for example, when the automobile tire is inflated and basketball is inflated, the same nozzle cannot be used, the corresponding nozzle needs to be replaced at the moment and the handheld electric air pump 10 can be communicated with the same nozzle, so that inflation is achieved, the battery box 330 further comprises a standby nozzle 334 and a sliding cover 335 for facilitating replacement and storage of the nozzle, the lower shell 332 is provided with a containing cavity, the standby nozzle 334 is contained in the containing cavity, and the sliding cover 335 is used for sealing the containing cavity.
Above-mentioned hand-held type electronic air pump 10 is through setting up air pump body 100, transmission module 200, power 300, cylinder body 400 and piston 500, and transmission module 200 is used for driving piston 500 to carry out the piston motion in cylinder body 400 in order to aerify the external part to adjust the structure of piston 500, reduce the swing in the piston motion process, thereby reduce the wearing and tearing volume of piston 500 and cylinder body 400 inner wall, and then improve the life of air pump.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A hand-held electric air pump, comprising:
The air pump body comprises a shell and a copper head, the shell is provided with an air outlet, the copper head is arranged on the inner side wall of the shell, and the copper head is communicated with the air outlet;
the transmission module comprises a motor, a driving gear and a reduction gear, wherein the motor is accommodated in the shell, the driving gear is arranged on an output shaft of the motor, the reduction gear is meshed with the driving gear, and an eccentric table is arranged on the reduction gear;
The power supply is arranged at one end of the shell far away from the air outlet;
the driving plate is arranged on the shell and is electrically connected with the motor and the power supply respectively;
the cylinder body is provided with a transition cavity and an air cavity, the air cavity is communicated with the transition cavity, the copper head is connected with the outer wall of the cylinder body, and the copper head is communicated with the transition cavity;
The piston comprises a connecting rod, an external ring and a piston ring, wherein the external ring is covered on the eccentric table, the piston ring is sleeved on one end of the connecting rod, which is far away from the external ring, the piston ring is positioned in the air cavity, the outer wall of the piston ring is attached to the inner wall of the air cavity, the outer diameter of the piston ring is gradually decreased from one side, which is close to the transition cavity, to one side, which is far away from the transition cavity, and the motor is used for driving the piston ring to reciprocate along the inner wall of the air cavity.
2. A hand-held electric air pump according to claim 1, wherein the eccentric table is of cylindrical configuration.
3. A hand-held electric air pump according to claim 2, wherein the inner diameter of the circumscribing ring is larger than the diameter of the eccentric table.
4. The hand-held electric air pump of claim 1, wherein the piston ring comprises a fastening block and a deformation block, the fastening block is sleeved on the connecting rod, and the deformation block is arranged on the outer wall of the fastening block and is attached to the inner wall of the air cavity.
5. The hand-held electric air pump of claim 4 wherein the deformation block is annular in shape and the outer diameter of the deformation block decreases from an end proximal to the transition chamber to an end distal from the transition chamber.
6. A hand-held electric air pump according to claim 1, wherein a bearing is embedded in the outer ring.
7. A hand-held electric air pump as in claim 1, further comprising a one-way valve embedded within the transition chamber.
8. A hand-held electric air pump according to claim 1, wherein the housing is provided with a grip portion and a working portion, the motor being located in the grip portion, the piston and the cylinder being located in the working portion.
9. A hand-held electric air pump according to claim 8, wherein the axis of the grip portion and the axis of the working portion are perpendicular to each other.
10. A hand-held electric air pump according to claim 1, wherein the driving gear and the reduction gear are spur gears.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910424206.XA CN110067732B (en) | 2019-05-21 | 2019-05-21 | Hand-held electric air pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910424206.XA CN110067732B (en) | 2019-05-21 | 2019-05-21 | Hand-held electric air pump |
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| CN110067732A CN110067732A (en) | 2019-07-30 |
| CN110067732B true CN110067732B (en) | 2024-05-17 |
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| CN110732125B (en) * | 2019-10-30 | 2020-11-13 | 苏州市相城区阳澄产业园发展有限公司 | Aerating device based on intermittent reciprocating motion guarantees to aerify invariable content |
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| US5395216A (en) * | 1993-02-23 | 1995-03-07 | Lin; Yi-Hsien | Portable car-used oil extracting and tire inflation apparatus with separately disposed oil and air pumps |
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| CN102937077A (en) * | 2012-11-30 | 2013-02-20 | 天津世纪慧芯科技发展有限公司 | Air pump |
| WO2017086359A1 (en) * | 2015-11-19 | 2017-05-26 | アスモ株式会社 | Electric air pump |
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| WO2013104146A1 (en) * | 2012-01-09 | 2013-07-18 | 冠翔（香港）工业有限公司 | Inflating pump connector and inflating pump |
| US9303637B2 (en) * | 2013-02-18 | 2016-04-05 | Manousos Pattakos | Connecting rod valve |
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| US5395216A (en) * | 1993-02-23 | 1995-03-07 | Lin; Yi-Hsien | Portable car-used oil extracting and tire inflation apparatus with separately disposed oil and air pumps |
| CN101634286A (en) * | 2009-07-30 | 2010-01-27 | 浙江鸿友压缩机制造有限公司 | Low-noise reciprocating piston compressor |
| CN102937077A (en) * | 2012-11-30 | 2013-02-20 | 天津世纪慧芯科技发展有限公司 | Air pump |
| WO2017086359A1 (en) * | 2015-11-19 | 2017-05-26 | アスモ株式会社 | Electric air pump |
| CN206707960U (en) * | 2017-02-04 | 2017-12-05 | 深圳市金辕科技有限公司 | A kind of Portable inflator pump |
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| CN110067732A (en) | 2019-07-30 |
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