CN201679677U - Electric air pump - Google Patents
Electric air pump Download PDFInfo
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- CN201679677U CN201679677U CN2010201972883U CN201020197288U CN201679677U CN 201679677 U CN201679677 U CN 201679677U CN 2010201972883 U CN2010201972883 U CN 2010201972883U CN 201020197288 U CN201020197288 U CN 201020197288U CN 201679677 U CN201679677 U CN 201679677U
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Abstract
The utility model relates to an electric air pump, which comprises a piston type aeration structure and a centrifugal aeration structure. The piston type aeration structure is arranged inside an outer casing, the centrifugal aeration structure includes a pump casing provided with an air outlet and an air inlet, and a wind wheel is mounted inside the pump casing. An air outlet of the piston type aeration structure and the air outlet of the pump casing are connected with a joint, and an aeration hole arranged inside the joint is communicated with the air outlet of the piston type aeration structure and the air outlet of the pump casing. The electric air pump is characterized in that a first one-way valve sheet arranged at the position of the air outlet of the pump casing only allows air inside the pump casing to be exhausted to the aeration hole, an air inlet passage arranged at the bottom of the pump casing is communicated with the air inlet of the pump casing and the external, a valve opening is arranged in the middle of the air inlet passage, a magnet is arranged inside a second one-way valve sheet arranged at the position of the valve opening, and a reed pipe fixedly arranged outside the pump casing can sense the magnet only under the closing state of the second one-way valve sheet. The electric air pump is capable of automatically and stably switching aeration modes according to real-time pressure inside an aerated device.
Description
Technical field
The utility model relates to a kind of electric air pump.
Background technique
Existing electric inflating pump mainly contains two kinds of mode of structure: a kind of is the piston type electric inflating pump, comprise shell with inflation inlet, the shell internal fixation has cylinder sleeve, the cylinder sleeve front end is provided with suction port and air outlet, the inflation inlet of air outlet and shell is communicated with, the suction port place is provided with and only allows ambient atmos to enter the interior one-way valve structures of cylinder sleeve, the place, air outlet is provided with and only allows the one-way valve structures of the interior gas row of cylinder sleeve to inflation inlet, be provided with piston in the cylinder sleeve, be provided with the seal ring sealing between all sides of piston and the inboard wall of cylinder liner, also be provided with in the shell and drive the piston actuated structure that piston moves back and forth in cylinder sleeve.The piston actuated structure comprises setting piston rod, motor, driving gear and driven gear in the enclosure, driven gear by Bearing Installation in the enclosure, driving gear is a small gear, driven gear is a gearwheel, driving gear links to each other with the output shaft of motor, be that driving gear is rotated by driven by motor, driving gear then meshes with driven gear, the front end of piston rod is connected with the ear end face of piston by univesal sphere linkage structure or hinging structure, and the rear end of piston rod is rotationally connected from the end face that the other end of cylinder sleeve stretches out by bearing pin and driven gear.It is big that this electric inflating pump has inflation pressure, but the characteristics that aeration speed is slow, gas production is little.As a patent No. is that the Chinese utility model patent " high pressure is used reciprocating pump more " of ZL92210139.6 (notification number is CN2112705Y) discloses a kind of piston type electric inflating pump.
Another kind is a centrifugal blower formula electric inflating pump, comprises the pump case that has suction port and relief opening, is arranged on the impeller in the pump case, and the impeller motor rotating.It is big that this electric air pump has aeration quantity, and aeration speed is fast, but the low characteristics of inflation pressure.As a patent No. is the built-in electric air pump that a kind of inflatable product was used the Chinese utility model patent " high pressure is used reciprocating pump more " of ZL200920053275.6 (notification number is CN201372940Y) disclosed.
At the aforementioned techniques present situation, someone has invented a kind of electric air pump that can carry out the high low pressure inflation, as a patent No. is the electric inflating pump that the Chinese utility model patent " a kind of high low pressure gas-filled pump " of ZL 200820121455.9 (notification number is CN201258841Y) all discloses, comprise housing, be arranged on first motor in the described housing, the first piston that is driven by first motor, described first piston is arranged in first cylinder, first cylinder is provided with air outlet and air intake, described air outlet connects steam outlet pipe, it is characterized in that: described first motor connects the first control signal output terminal of single chip control module, the second control signal output terminal of single chip control module connects second motor, the described second motor driving centrifugal blower, the inlet of described centrifugal blower is communicated with atmosphere, and the outlet of described centrifugal blower connects described steam outlet pipe; Be provided with first pressure transducer that is used to respond to the chamber pressure that is inflated object in the described steam outlet pipe, described first pressure transducer connects the first pressure signal input end of described single chip control module, and the air intake place of described steam outlet pipe is provided with the one-way valve of restriction air flow direction.This gas-filled pump is promptly rapidly aerated, can under high pressure inflate again, is particularly suitable for boat, the inflation of the inflatable products such as boat of charging.
There is following problem in this high low pressure electric air pump:
1, it detects endotracheal pressure in real time by the pressure transducer that is arranged in the steam outlet pipe, when force value reaches when sending the default force value of single chip control module to, switch motor work, realize the conversion of inflation mode, because electric air pump generally uses storage battery as working power, when the power shortage of storage battery, centrifugal blower is inflated being inflated equipment, the pressure of charger can not reach the default force value of pressure transducer, this electric air pump just can not be finished the switching of inflation mode like this, promptly be that centrifugal blower is inflated charger all the time, and the piston type air-supported structure is not worked, this electric air pump just can not continue charger is inflated like this, causes electric air pump normally not use; Have again under the sufficient state of battery power, even the pressure of charger reaches the default force value of pressure transducer, this moment, centrifugal blower can also continue charger is inflated, but owing to reach setup pressure value, the inflation mode converts piston inflation mode to, can influence the charging efficiency of whole gas replenishment process like this.
2, its at cylinder sleeve front-end face place except that setting out gas port, also be provided with suction port, and be provided with at the suction port place and only allow ambient atmos to enter one-way valve structures in the cylinder sleeve, so will reserve at the suction port place in order to the space of aforementioned one-way valve structures to be set, like this in the gas replenishment process that piston moves forward in cylinder sleeve, some gas can exist the suction port place in order in the space that aforementioned one-way valve structures is installed, this part gas can not be discharged from the air outlet so that charger is inflated like this, so its charging efficiency is low.
3, have again in the existing gas-filled pump and easily be worn, and the situation that gas leakage is arranged in gas replenishment process is taken place, further influence charging efficiency in order to the seal ring between packed-piston and the cylinder sleeve.
4, there is following problem in the piston actuated structure of existing electric air pump, driven gear is in rotating process, the position that driven gear is connected with piston rod can be subjected to the thrust of piston rod, and other position duty of driven gear does not have extraneous thrust, driven gear unbalance stress in rotary course like this, driven gear easily vibrates in rotary course, noise is big in the course of the work to cause driving air pump, and driving gear and driven gear can occurring, interlock to occur loosening, and damage driven gear and driving gear, the working life of reducing electric air pump.
The model utility content
Technical problem to be solved in the utility model is the electric inflating pump that a kind of novel structure is provided at above-mentioned prior art present situation, it can be according to the automatic and stable switching inflation mode of real-time pressure that is inflated in the equipment, to reach the purpose of inflation rapidly and efficiently.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of electric air pump, comprise the piston type air-supported structure that setting is moved by first driven by motor in the enclosure, the air outlet of piston type air-supported structure is connected with joint, also be provided with centrifugal air-supported structure in the shell, described centrifugal air-supported structure comprises the pump case with air outlet and suction port, wind wheel by the rotation of second driven by motor is installed in the pump case, the air outlet of described pump case also is connected with described joint, has the air-filled pore that is communicated with the air outlet of the air outlet of piston type air-supported structure and pump case in the joint; It is characterized in that: the place, air outlet of described pump case is provided with and only allows first check valve sheet of the interior gas row of pump case to air-filled pore, the bottom of pump case is provided with and is communicated with suction port and extraneous gas-entered passageway, the gas-entered passageway middle part is provided with valve port, this valve port place be provided with the suction port that only allows the air from pump shell by pump case the air outlet and make valve port keep second check valve sheet of normally off, be provided with magnet in this second check valve sheet, described pump case external stability has the dry reed-pipe that only can sense described magnet under the second check valve sheet closed state.
Above-mentioned piston type air-supported structure comprises setting cylinder sleeve in the enclosure, the cylinder sleeve front end is provided with the air outlet, the place, air outlet is provided with and only allows the one-way valve structures that gas is discharged in the cylinder sleeve, cylinder sleeve is provided with the piston of energy front and back slippage, be provided with the seal ring sealing between all sides of piston and the inboard wall of cylinder liner, also be provided with in the shell and drive the piston actuated structure that piston moves back and forth in cylinder sleeve; Have suction port on the described piston end face, the suction port place is provided with and only allows ambient atmos to enter the 3rd check valve sheet in the cylinder sleeve from the cylinder sleeve open rearward end, and the 3rd check valve sheet is fixed on the front-end face of piston and can covers described suction port.
Because aforementioned piston air-supported structure only is provided with the air outlet at the front-end face of cylinder sleeve, when air-breathing, move behind the piston, second one-way valve opens, gas is from the suction port of cylinder sleeve open rearward end through piston, first one-way valve opens during inflation, and second closed check valve, piston does not have unnecessary gas residue in cylinder sleeve in the gas replenishment process of reach like this, guarantee that the gas in the cylinder sleeve can fully be extruded so that charger is inflated by piston, so its charging efficiency improves greatly.Certain piston air-supported structure also can adopt existing various piston air-supported structures, also can adopt two aforementioned cylinder sleeves, just gets final product by trachea air outlet of merging formation, two air outlets with cylinder sleeve at last.
Suction port on the above-mentioned piston is a plurality of through holes that are uniformly distributed along the circumference.The area of contact of such the 3rd check valve sheet and piston nose face is big, and it is more firm that the 3rd check valve sheet and piston nose face are fitted.
Above-mentioned one-way valve structures is arranged in the air-filled pore of described joint to good, can simplify the structure in the cylinder sleeve like this, one-way valve structures comprises valve rod and valve block, described valve block is connected valve rod rear end and the air outlet on the cylinder sleeve can be blocked, form fitting seat in the described air-filled pore, described valve rod is plugged in the fitting seat and slippage before and after the energy, also is arranged with spring on the described valve rod, and this spring is supported between fitting seat and the valve block so that valve block keeps blocking backward the trend of the air outlet on the cylinder sleeve.More than be normal the employing and simple one-way valve structures in the gas-filled pump.
Above-mentioned piston actuated structure includes piston rod, driving gear and driven gear, described driving gear is rotated by described first driven by motor, described driven gear is rotatably installed in the shell and with driving gear and is meshed, one end of described piston rod and the ear end face of piston are rotationally connected, the other end of piston rod is rotationally connected by the end face of bearing pin and driven gear, also is provided with a balancing weight on the described driven gear end face.
Aforementioned piston actuated structure also is provided with a balancing weight on the driven gear end face, balancing weight is to the action of gravity of driven gear like this, can offset the thrust of piston rod to driven gear, guarantee the two ends stress balance of the axis of rotation of driven gear, guarantee that effectively driven gear can steadily rotate, so driven gear is difficult for vibrating in rotation process, noise is little in the course of the work to make electric air pump, and make driving gear and driven gear engagement steadily, prolong the working life of driven gear.
For guarantee that further driven gear vibrates little in rotary course, line between the center of gravity of above-mentioned balancing weight and the axle center of bearing pin is through the axis of rotation of driven gear, and the axle center of the center of gravity of balancing weight and bearing pin equates to the spacing between the axis of rotation of driven gear.Can make driven gear is subjected to piston rod at the shaft core position place of bearing pin thrust size and balancing weight that the axis of rotation of the big or small relative driven gear of pressure of driven gear is reached balance so more easily.
Above-mentioned piston week side and inboard wall of cylinder liner between seal ring be trip ring, the opening of trip ring overlaps mutually and circlewise, the opening of trip ring has the step surface that overlaps mutually.Even sealing coil structures periphery is worn, the intrinsic tension force of trip ring can make trip ring to around open, with the compensation part that is worn, effectively guarantee around the piston and good air-tightness between the inboard wall of cylinder liner, improve the charging efficiency of electric air pump.
For making this electric air pump have electronic degassing function, also be provided with the exhaust port that is communicated with suction port on the pump case on the above-mentioned shell.The inflation inlet that will be inflated equipment during exhaust links to each other with exhaust port by flexible pipe, just the gas that is inflated in the equipment can be sucked from exhaust port, discharges extraneous by centrifugal blower from the inflation inlet of electric air pump again.
Compared with prior art, advantage of the present utility model is: this electric air pump is by comparing the gas pressure of the second check valve sheet both sides, inflation pressure that wind wheel provided in the promptly more centrifugal air-supported structure and the gas pressure that is inflated in the equipment, the inflation pressure that wind wheel provided in centrifugal air-supported structure is greater than the gas pressure that is inflated in the equipment, then second check valve sheet is in open mode, dry reed-pipe is not responded to by the magnet in second check valve sheet, dry reed-pipe is in off state, dry reed-pipe is controlled second machine operation by control module, and allow first motor quit work, that is to say and have only centrifugal air-supported structure to carry out the quick low voltage inflation being inflated equipment; And the inflation pressure that wind wheel provided in centrifugal air-supported structure is less than or equal to the interior gas pressure of the equipment of being inflated, second check valve sheet is sealed valve port under self elastic reaction, dry reed-pipe is responded to by the magnet in second check valve sheet, dry reed-pipe is in closed state, dry reed-pipe is controlled first machine operation by control module, and allow second motor quit work, that is to say and have only the piston type air-supported structure to being inflated equipment and carrying out high pressure but inflation at a slow speed; That is to say that this electric air pump can reach seamless switching inflation mode, can be because of the battery power deficiency that power is provided to electric air pump, and produce the possibility that can not switch the inflation mode, so this electric air pump can be according to the automatic and stable switching inflation mode of real-time pressure that is inflated in the equipment; There is this electric air pump can allow centrifugal air-supported structure fully work again, to reach the purpose of inflation rapidly and efficiently.
Description of drawings
Fig. 1 is the utility model embodiment's a perspective view;
Fig. 2 removes three-dimensional exploded view behind the shell of top for the utility model embodiment;
Fig. 3 removes the schematic perspective view (second check valve sheet is with the valve port shielding status) behind the bottom of bottom shell and gas-entered passageway for the utility model embodiment;
Fig. 4 removes the plan view (second check valve sheet is with the valve port open mode) behind the bottom of bottom shell and gas-entered passageway for the utility model embodiment;
Fig. 5 removes structure sectional view behind the shell of top for the utility model embodiment;
Fig. 6 is the three-dimensional exploded view of piston type air-supported structure among the utility model embodiment;
Fig. 7 is installed in perspective exploded view on second check valve sheet for magnet among the utility model embodiment;
Fig. 8 is installed to perspective exploded view on the driven gear for balancing weight among the utility model embodiment;
Fig. 9 is the perspective view of seal ring among the model utility embodiment;
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～9, be a preferred embodiment of the present utility model.
A kind of electric air pump, comprise and be arranged on the piston type air-supported structure that drives action in the shell 1 by first motor 11, as Fig. 5,6,8, shown in 9, the piston type air-supported structure comprises a cylinder sleeve 12 that is arranged in the shell 1, cylinder sleeve 12 front ends are provided with air outlet 121,121 places, air outlet are provided with and only allow the one-way valve structures that gas is discharged in the cylinder sleeve 12, there is joint 2 at the front-end face place of cylinder sleeve by screw, joint 2 stretches out shell 1, be provided with seal ring between the front-end face of joint 2 and cylinder sleeve 12, the periphery of joint 2 is provided with is convenient to the outside thread that is connected with the gas tube for the treatment of charger, has the air-filled pore 21 that is communicated with the air outlet 121 of cylinder sleeve in the joint 2.
The one-way valve structures at 121 places, air outlet is arranged in the air-filled pore 21 of joint 2, one-way valve structures comprises valve rod 16 and valve block 17, valve block 17 is connected valve rod 16 rear ends and the air outlet on the cylinder sleeve 121 can be blocked, form fitting seat 22 in the air-filled pore 21, valve rod 16 is plugged in the fitting seat 22 and slippage before and after the energy, also be arranged with spring 18 on the valve rod 16, this spring 18 is supported between fitting seat 22 and the valve block 17 so that valve block 17 keeps blocking backward the trend of the air outlet 121 on the cylinder sleeve.
Also be provided with in the shell 1 and drive the piston actuated structure that piston 13 moves back and forth in cylinder sleeve 12, the piston actuated structure includes piston rod 19, driving gear 20 and driven gear 23, driving gear 20 is directly installed on the output shaft of first motor 11, such first motor 11 just can drive driving gear 20 rotations, and driving gear 20 is a small gear, and driving gear 20 also can link to each other with the output shaft of motor by the deceleration train certainly; Driven gear 23 is rotatably installed in the shell 1 and with driving gear 20 by bearing and is meshed, and moving gear 23 is a gearwheel, and the rotation of driving gear 20 just can drive driven gear 23 rotations like this; One end of piston rod 19 and the ear end face of piston 13 are rotationally connected, and the other end of piston rod 19 is rotationally connected by the end face of bearing pin 24 with driven gear 23.
The main improvement of this piston type air-supported structure is, also be provided with a balancing weight 25 on driven gear 23 end faces, balancing weight 5 is cylindric, this balancing weight 5 is fixed on the driven gear 23 in the mode that is embedded, promptly on the end face of driven gear 23, be provided with earlier mounting hole 231, then balancing weight 25 is embedded in the mounting hole 231 and get final product, line between the axle center of the center of gravity of balancing weight 25 and bearing pin 24 is through the axis of rotation of driven gear 23, simultaneously, the axle center of the center of gravity of balancing weight 25 and bearing pin 24 equates to the spacing between the axis of rotation of driven gear 23.
Because the action of gravity of 25 pairs of driven gears 23 of balancing weight, can offset the thrust of 19 pairs of driven gears 23 of piston rod, guarantee driven gear 23 stress balance in rotation process, driven gear 23 is difficult for vibrating in rotation process, noise is little in the course of the work to make electric air pump, and make driving gear 20 and driven gear 23 engagements steadily, prolong the working life of driven gear 23.
Have again, have suction port 131 on the end face of piston 13, the a plurality of through holes of suction port 131 for being uniformly distributed along the circumference, suction port 131 places are provided with and only allow ambient atmos to enter the 3rd check valve sheet 15 in the cylinder sleeve 12 from cylinder sleeve 12 open rearward end, the 3rd check valve sheet 15 is a flexible membrane, and the 3rd check valve sheet 15 is fixed on the front-end face of piston 13 and can covers suction port 131.
During inflation, piston 13 moves forward in cylinder sleeve 12, gas backs down the 3rd check valve sheet 15, the air outlet 121 of gas in the cylinder sleeve 12 on cylinder sleeve, air-filled pore 21 in the joint discharged to give treat the charger inflation, whole gas replenishment process piston 13 can all be discharged the charging efficiency height with gas in the cylinder sleeve 12.When air-breathing, piston 13 moves after in cylinder sleeve 12, and the 3rd check valve sheet 15 blocks the air outlet under spring 18 effects, and backs down the 3rd check valve sheet 15 from the gas that cylinder sleeve 12 open rearward end enter, gas in suction port enters cylinder sleeve 12, is finished breathing process from cylinder sleeve 12 open rearward end.
Shown in Fig. 1～5, also be provided with centrifugal air-supported structure in the shell 1, centrifugal air-supported structure comprises the pump case 3 with air outlet 31 and suction port 32, wind wheel 5 by second motor, 4 driven rotary is installed in the pump case 3, the air outlet 31 of pump case also is connected with joint 2, and the air outlet 31 of pump case also is communicated with the air-filled pore 21 of joint; 31 places, air outlet of pump case are provided with and only allow first check valve sheet 6 of pump case 3 interior gas rows to air-filled pore 21, the 3rd check valve sheet 6 also is a flexible membrane, the bottom of pump case 3 is provided with suction port 32 and the extraneous gas-entered passageway 7 that is communicated with pump case, gas-entered passageway 7 middle parts are provided with valve port 71, these valve port 71 places be provided with the suction port 32 that only allows air air from pump shell by pump case air outlet 31 and make valve port 71 keep second check valve sheet 8 of normally offs, second check valve sheet 8 is the block that is supported by the rubber material, one end of second check valve sheet 8 is embedded in gas-entered passageway 7, gas-entered passageway 7 bottoms are connected with the bottom sealing by screw, such second check valve sheet 8 just can be around being embedded a upset, be provided with magnet 9 in second check valve sheet 8, pump case 3 external stabilities have the dry reed-pipe 10 that only can sense described magnet 9 under second check valve sheet, 8 closed states.
Also be provided with the exhaust port 26 that is communicated with suction port 32 on the pump case on the shell 1.
Certain aforementioned dry reed-pipe 10 selects the control module 27 of first motor 11 or 4 work of second motor to link to each other with a control; this control module 27 has 3 seconds time-delay; the program control of this control module 27 is not the claimed point of the utility model, and those skilled in the art can arbitrarily design as required.
The working principle and the process of this electric air pump are as follows:
During inflation, gas tube will be inflated equipment and link to each other with joint 2, connect power supply, though beginning moment, second check valve sheet 8 is sealed valve port under self elastic reaction, dry reed-pipe is by the magnet induction in second check valve sheet 8, dry reed-pipe is in closed state, because control module 27 has certain extension function, between time delay, (be set at time-delay in 3 seconds), 4 work of control module 27 controls second motor, and first motor 11 quits work, and promptly has only centrifugal air-supported structure to carry out the quick low voltage inflation to being inflated equipment, and second check valve sheet 8 is opened, gas is via the suction port 32 of pump case, the air-filled pore 21 of joint is given and is inflated the equipment inflation, because second check valve sheet 8 is opened, the magnet in second check valve sheet 8 is away from dry reed-pipe 10, and open the contact in the dry reed-pipe 10, even after like this between time delay, also have only centrifugal air-supported structure to carry out the quick low voltage inflation to being inflated equipment; Along with the air pressure that is inflated in the equipment raises gradually, the inflation pressure that wind wheel 5 is provided in centrifugal air-supported structure is less than or equal to the gas pressure in the equipment of being inflated, second check valve sheet 8 under self elastic reaction with valve port 71 sealings, gas is no longer by gas-entered passageway 7, dry reed-pipe 10 is by 9 inductions of the magnet in second check valve sheet 8, dry reed-pipe 10 is in closed state, dry reed-pipe 10 is by 11 work of control module 27 controls first motor, and allow second motor 4 quit work, that is to say and have only the piston type air-supported structure to being inflated equipment and carrying out high pressure but inflation at a slow speed.
In sum, this electric air pump can reach seamless switching inflation mode, can be because of the battery power deficiency that power is provided to electric air pump, and produce the possibility that can not switch the inflation mode; There is this electric air pump can allow centrifugal air-supported structure fully work again, to reach the purpose of inflation rapidly and efficiently.
Claims (8)
1. electric air pump, comprise and be arranged on the piston type air-supported structure that drives action in the shell (1) by first motor (11), the air outlet of described piston type air-supported structure (121) is connected with joint (2), shell also is provided with centrifugal air-supported structure in (1), described centrifugal air-supported structure comprises the pump case (3) of have the air outlet (31) and suction port (32), wind wheel (5) by second motor (4) driven rotary is installed in the pump case (3), the air outlet of described pump case (31) also is connected with described joint (2), has the air-filled pore (21) that is communicated with the air outlet (31) of the air outlet (121) of piston type air-supported structure and pump case in the joint (2); It is characterized in that: the air outlet of described pump case (31) are located to be provided with and are only allowed first check valve sheet (6) of the interior gas row of pump case (3) to air-filled pore (21), the bottom of pump case (3) is provided with and is communicated with suction port (32) and extraneous gas-entered passageway (7), gas-entered passageway (7) middle part is provided with valve port (71), this valve port (71) locate to be provided with the suction port (32) that only allows the air from pump shell by pump case air outlet (31) and make valve port (71) keep second check valve sheet (8) of normally off, be provided with magnet (9) in this second check valve sheet (8), described pump case (3) external stability has the dry reed-pipe (10) that only can sense described magnet (9) under second check valve sheet (8) closed state.
2. electric air pump according to claim 1, it is characterized in that: described piston type air-supported structure comprises a cylinder sleeve (12) that is arranged in the shell (1), cylinder sleeve (12) front end is provided with air outlet (121), the one-way valve structures that only allows the interior gas of cylinder sleeve (12) to discharge is located to be provided with in air outlet (121), cylinder sleeve (12) is provided with the piston (13) of energy front and back slippage, be provided with seal ring (14) sealing between all sides of piston (13) and cylinder sleeve (12) inwall, also be provided with in the shell (1) and drive the piston actuated structure that piston (13) moves back and forth in cylinder sleeve (12); Have suction port (131) on the end face of described piston (13), suction port (131) is located to be provided with and is only allowed ambient atmos to enter the 3rd check valve sheet (15) in the cylinder sleeve (12) from cylinder sleeve (12) open rearward end, and the 3rd check valve sheet (15) is fixed on the front-end face of piston (13) and can covers described suction port (131).
3. electric air pump according to claim 2 is characterized in that: a plurality of through holes of the suction port on the described piston (131) for being uniformly distributed along the circumference.
4. electric air pump according to claim 2, it is characterized in that: described one-way valve structures is arranged in the air-filled pore (21) of described joint (2), one-way valve structures comprises valve rod (16) and valve block (17), described valve block (17) is connected valve rod (16) rear end and the air outlet on the cylinder sleeve (121) can be blocked, form fitting seat (22) in the described air-filled pore (21), described valve rod (16) is plugged in the fitting seat (22) and slippage before and after the energy, also be arranged with spring (18) on the described valve rod (16), this spring (18) is supported between fitting seat (22) and the valve block (17) so that valve block (17) keeps blocking backward the trend of the air outlet (121) on the cylinder sleeve.
5. electric air pump according to claim 2, it is characterized in that: described piston actuated structure includes piston rod (19), driving gear (20) and driven gear (23), described driving gear (20) is by described first motor (11) driven rotary, described driven gear (23) is rotatably installed in the shell (1) and with driving gear (20) and is meshed, the ear end face of one end of described piston rod (19) and piston (13) is rotationally connected, the other end of piston rod (19) is rotationally connected by the end face of bearing pin (24) with driven gear (23), also is provided with a balancing weight (25) on described driven gear (23) end face.
6. electric air pump according to claim 5, it is characterized in that: the line between the axle center of the center of gravity of described balancing weight (25) and bearing pin (24) is through the axis of rotation of driven gear (23), and the axle center of the center of gravity of balancing weight (25) and bearing pin (24) equates to the spacing between the axis of rotation of driven gear (23).
7. electric air pump according to claim 2, it is characterized in that: the seal ring (14) between all sides of described piston (13) and cylinder sleeve (12) inwall is a trip ring, the opening of trip ring overlaps mutually and circlewise, the opening of trip ring has the step surface (141) that overlaps mutually.
8. according to the described electric air pump of arbitrary claim in the claim 1～7, it is characterized in that: also be provided with the exhaust port (26) that is communicated with suction port (32) on the pump case on the described shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201972883U CN201679677U (en) | 2010-05-18 | 2010-05-18 | Electric air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201972883U CN201679677U (en) | 2010-05-18 | 2010-05-18 | Electric air pump |
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| CN201679677U true CN201679677U (en) | 2010-12-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846054A (en) * | 2010-05-18 | 2010-09-29 | 宁波布拉沃冲气具制造有限公司 | Electric air pump |
| CN109798236A (en) * | 2017-11-17 | 2019-05-24 | 江苏亿美电器有限公司 | A kind of efficient electric air pump |
| WO2023089091A1 (en) * | 2021-11-18 | 2023-05-25 | Aircom Automotive Sp. z o.o. Sp. k. | Compressed-air supply system |
| WO2023123723A1 (en) * | 2021-12-30 | 2023-07-06 | 田庆亮 | Built-in double-air-channel inflation and extraction device |
-
2010
- 2010-05-18 CN CN2010201972883U patent/CN201679677U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846054A (en) * | 2010-05-18 | 2010-09-29 | 宁波布拉沃冲气具制造有限公司 | Electric air pump |
| CN109798236A (en) * | 2017-11-17 | 2019-05-24 | 江苏亿美电器有限公司 | A kind of efficient electric air pump |
| WO2023089091A1 (en) * | 2021-11-18 | 2023-05-25 | Aircom Automotive Sp. z o.o. Sp. k. | Compressed-air supply system |
| WO2023123723A1 (en) * | 2021-12-30 | 2023-07-06 | 田庆亮 | Built-in double-air-channel inflation and extraction device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101222 Effective date of abandoning: 20110907 |