CN1987105A - Micro air pump - Google Patents
Micro air pump Download PDFInfo
- Publication number
- CN1987105A CN1987105A CN 200510132095 CN200510132095A CN1987105A CN 1987105 A CN1987105 A CN 1987105A CN 200510132095 CN200510132095 CN 200510132095 CN 200510132095 A CN200510132095 A CN 200510132095A CN 1987105 A CN1987105 A CN 1987105A
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- air pump
- cylinder
- micro air
- cylinder block
- eccentric wheel
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Abstract
A miniature air pump for car is composed of cylinder body, cylinder base, drive motor, cylinder cover with air inlet and outlet having respective one-way valve, the eccentric wheel in the cavity of cylinder body and with multiple slots on its circumference, and multiple blades arranged in said slot on eccentric wheel to form multiple working air cavities.
Description
Technical field
The present invention relates to micro air pump, this micro air pump typically is applied on the automobile.
Background technique
Air pump is widely used in all trades and professions, for example printing industry, battery industry, automobile industry.
Along with the fast development of automotive engineering, the function of configuration of automobiles is also more and more, and the realization of many functions all needs source of the gas, such as: seat lumbar supports, pneumatic centrally controrlled locking system etc.The most complex structure of current air pump involves great expense, and takies bigger installing space, and these deficiencys have all influenced popularizing of these functions to a certain extent.
In order to adapt to the vehicle price downward trend, reduce the manufacture cost of air pump, CN 2601890Y discloses a kind of automobile micro air pump, comprise in the cylinder of drive motor, pump case upper end piston is housed, between cylinder and the cylinder cap exhaust valve seat is housed, valve port can open and close with the relief opening of pump by one-way valve and be communicated with, it is characterized in that the piston rod lower end is installed on the eccentric wheel that is driven by machine shaft, piston has the inlet hole of up/down perforation, the upper-end surface, hole is stamped and can be opened and closed valve block, and the pump case sidewall below piston has the suction port of pump.
In addition, one-way valve wherein is made of an end fixing in opposite directions reed and washer.Can open and close valve block and be pressed with helical spring reed and be constituted by top, helical spring is placed in the bolt that is fixed on piston-top surface.Drive motor is connected with the pump housing is L-shaped.
Use in the micro air pump at above-mentioned automobile, its structure and principle all are similar to prior art, promptly drive piston up-down by drive motor, when piston descends, gas enters into air cavity by one-way valve, when piston rises, discharge from relief opening then with the gas compression in the air cavity and with the gas of compression.Therefore, this micro air pump there is no too big improvement for prior art, can not simplify the manufacture cost of air pump structure and reduction air pump effectively.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, easy for installation, micro air pump that manufacturing cost and use cost is cheap.
Micro air pump of the present invention comprises cylinder head, cylinder block, air cylinder base and drive motor, wherein, the suction port and the relief opening that have perforation on the cylinder head, cavity in this suction port and relief opening and the cylinder block is communicated with, in cavity, has eccentric wheel by the rotating shaft rotary driving of drive motor, on eccentric circumference, have a plurality of grooves, in groove, be provided with blade, form a plurality of work air cavitys between the lower surface of the outer end of described a plurality of blades and the internal surface of cylinder block, cylinder head and the upper surface of air cylinder base.
The present invention adopts vehicle power, and during air pump work, gas enters air cavity from suction port, exports from relief opening after blade compresses.The one-way valve that suction port and relief opening all do not have traditional air pump to use always, overall structure is simple, easy for installation, cheap for manufacturing cost, can be widely used on the various functions of motor vehicle, supports, starts centrally controrlled locking system as seat lumbar.
Description of drawings
Fig. 1 is the schematic representation of micro air pump of the present invention;
Fig. 2 is the worm's eye view of cylinder head among Fig. 1;
Fig. 3 is the broken section plan view of cylinder head;
Fig. 4 is the plan view of micro air pump among Fig. 1;
Fig. 5 is the B-B sectional view among Fig. 4;
Fig. 6 is the A-A sectional view among Fig. 1.
Embodiment
Describe the embodiment of micro air pump of the present invention with reference to the accompanying drawings in detail.
As shown in the figure, micro air pump of the present invention comprises cylinder head 6, cylinder block 3, air cylinder base 2 and drive motor 1, wherein, the suction port 8 and the relief opening 9 that have perforation on the cylinder head 6, cavity in this suction port 8 and relief opening 9 and the cylinder block 3 is communicated with, in cavity, has eccentric wheel 5 by rotating shaft 12 rotary driving of drive motor 1, on the circumference of eccentric wheel 5, have a plurality of grooves 51, in groove 51, be provided with blade 4, the internal surface of the outer end of described a plurality of blades 4 and cylinder block 3, form a plurality of work air cavitys 41 between the upper surface of the lower surface of cylinder head 6 and air cylinder base 2.
In addition, in order to protect cylinder head 6, the bolt 10 of fastening force destroys to prevent to be had cylinder head 6 greatly, can use some packing ring or other parts commonly used with the bolt joint.As shown in Figure 1, in an embodiment of the present invention, pressing plate 7 can be set on cylinder head 6, bolt passes this pressing plate 7 and is connected with cylinder head 6, thereby by disperseing the pressure of 10 pairs of cylinder head 6 of bolt, can reduce the suffered pressure stress of cylinder head 6 upper surfaces.
About factors such as the shape of cylinder head 6, cylinder block 3, air cylinder base 2 and drive motor 1 and sizes, not emphasis of the present invention, all can adopt prior art.For example, drive motor 1 can use conventional series excitation type motor; Cylinder head 6, cylinder block 3 and air cylinder base 2 are generally cylindrical, and be corresponding with the profile of drive motor 1; Generally to have cavity or air cavity in the cylinder block 3, so that hold operation element such as blade etc.
As Fig. 1, Fig. 5 and shown in Figure 6, micro air pump of the present invention comprises cylinder head 6, cylinder block 3, air cylinder base 2 and drive motor 1 generally.Have suction port 8 and relief opening 9 on cylinder head 6, have cavity in cylinder block 3, suction port 8 and relief opening 9 are communicated with cavity.Described cavity is formed in the cylinder block 3 coaxially, promptly makes cylinder block 3 form cylindrical shape.The rotating shaft 12 of drive motor 1 is passed the bottom of air cylinder base 2 and is extend in the cylinder block 3, fixedlys connected with eccentric wheel 5, and Placement can connect realization by key commonly used.Rotatablely moving of rotating shaft 12 by drive motor 1, can drive eccentric wheel 5 in air cavity 41 with respect to air cavity 5 eccentric rotations.
As shown in Figures 2 and 3, in order to prolong effective admission time and the effective period of exhaust in the working unit circulation, can along the circumferential direction arrange air inlet duct 81 and air vent 91 at cylinder head 6 lower surfaces, this air inlet duct 81 and air vent 91 are communicated with suction port 8 and relief opening 9 respectively.The noise of effective admission time and the inlet and outlet when effectively the increase of period of exhaust greatly reduces the air pump running in the working unit circulation has also improved the working efficiency of air pump.
Wherein, the aperture angle of air inlet duct 81 is α, and the aperture angle of air vent 91 is β, because suction pressure is low relatively, air-flow is mild when making air pump work, and the value of α is generally big 3～4 times than β.In daily use, being provided with of α and β numerical value can be determined according to the operating angle speed omega of throw of eccentric δ, blade 4 numbers, machine shaft 12, the external diameter of eccentric wheel 5 and each Rational Parameters such as internal diameter of cylinder 3, for example, in an embodiment of the present invention, α can be 120 °, and β can be 30 °.
With reference to Fig. 6, eccentric wheel 5 is arranged in the cylinder block 3 prejudicially, and O1 and O2 represent the central point of cylinder block 3 and eccentric wheel 5 respectively, and δ represents the throw of eccentric between eccentric wheel 5 and the cylinder block 3, and machine shaft 12 is consistent with the central shaft of eccentric wheel 5.Therefore, when the rotating shaft 12 of drive motor 1 drove eccentric wheel 5 rotations, described eccentric wheel 5 is rotation prejudicially in cylinder block 3.Wherein, minimum range between the internal surface of the outer rim of eccentric wheel 5 and cylinder block 3 and ultimate range and described throw of eccentric δ can rationally determine according to actual needs.
In addition, have a plurality of grooves 51, in each groove 51, be mounted with a blade 4 at the edge of eccentric wheel 5.When drive motor 1 driving eccentric wheel 5 rotates in cylinder block 3, under action of centrifugal force, the outer end of described blade 4 will be resisted against on the inwall of cylinder block 3 all the time.Therefore, by the inwall of cylinder block 3, the lower surface of cylinder head 6 and the upper surface of air cylinder base 2, between two adjacent blades 4, can form a work air cavity 41.
In the eccentric rotary course of eccentric wheel 5, along with the inwall of blade 4 along cylinder block 3 moves, the gas in the work air cavity 41 will be in compressive state to constantly circulation between the swelling state.Particularly, when eccentric wheel 5 during according to illustrated direction of arrow ω rotation, the work air cavity 41 between two blades 4 is being crossed relief opening 9 (having under the situation of air vent 91, crossing air vent) afterwards, volume in the work air cavity 41 will constantly increase, and gas pressure will reduce gradually.When arriving suction port 8, this work air cavity 41 (having under the situation of air inlet duct 81, arrive air inlet duct) time, because the pressure in the work air cavity 41 is very little, be starkly lower than external pressure, therefore, outside air will enter into this work air cavity 41 rapidly by suction port 8.Then, after crossing air inlet duct 81, the gas in the work air cavity 41 will be compressed when working air cavity 41 continuation rotations.When work air cavity 41 arrives air vent 91 once more, pressurized gas wherein will promptly be discharged from relief opening 91 because pressure is very big, carry out corresponding action.
As shown in Figure 6, in an embodiment of the present invention, the quantity of described groove 51 is 6, and these grooves 51 evenly are provided with along the circumferencial direction of eccentric wheel 5.Obviously, according to concrete needs and consider processing technology and the factor of manufacture cost aspect, the quantity of described groove can be more than two, can have a plurality of arbitrarily in theory.
In addition, because pressurized gas is known from experience blade 4 generation pressure in the working procedure, there are frictional force in cylinder 3 inwalls and groove 51 surfaces to blade 4 simultaneously, in order to reduce the harmful effect that outside applied force produces blade 4, the center line of the equally distributed a plurality of grooves 51 in the edge of eccentric wheel 5 is set to the Off-Radial direction, and angle between the two is λ.Described included angle X preferably is that 75 degree are to 82 degree.
When air pump was worked, eccentric wheel 5 was around central point O
2With angular velocity omega direction rotation as shown in FIG., blade 4 is being followed eccentric wheel 5 around O
2Rotate, because action of centrifugal force, the outermost end of blade 4 is close to the internal surface of cylinder 3 all the time.Because groove 51 and cylinder 3 internal surfaces are to the constraint of blade, blade 4 is done the to-and-fro motion of relative eccentric wheel 5 all the time in groove 51.
It can also be seen that from Fig. 6 described suction port 8 is arranged on eccentric wheel 5 edges to be pressed close near the rotation upstream side of cylinder block 3 inner wall section, 9 of described relief openings are arranged on eccentric wheel 5 edges and press close near the rotation downstream side of cylinder block 3 inner wall section.Thus, the gas that is received during work air cavity 41 process suction ports 8 will be pressed close to the cylinder block inner wall section through the eccentric wheel edge and be compressed, and the gas after the compression is discharged by relief opening 9 immediately then, thereby can improve the working efficiency of micro air pump of the present invention.
In addition, it can also be seen that from figure that the direction of described blade 4 Off-Radials is preferably towards the sense of rotation deflection of eccentric wheel 5, during the pressure of the pressurized gas in blade is subjected to the work air cavity, blade can not be compressed in the groove 51 thus.
In addition, in order to prevent that blade 4 under the pressure effect of pressurized gas and return in the groove 51, can also be provided with for example spring (not shown) of elastic element, so that blade is resisted against all the time on the inwall of cylinder block 3 in groove 51.
In addition, it can also be seen that from Fig. 6 that the rotating center of described eccentric wheel 5 is identical with its geometrical center, the off-centre rotation of eccentric wheel 5 is by making the rotating center O of eccentric wheel 5
2Center O with respect to cylinder block 3
1Off-centre setting realizes that therefore the distance relation between the inwall of eccentric edge and cylinder block is determined.That is, as shown in Figure 6, in the bottom of drawing, the inwall of eccentric Edge Distance cylinder block is (being defined as position 1) recently, on opposite top, the inwall of eccentric Edge Distance cylinder block (is defined as position 2) farthest, will keep this state constant in eccentric rotary course always.Therefore, suction port and relief opening can be set in place, for example suction port be arranged between the position 1 and position 2 of rotation upstream side, preferably be arranged on 2 places, position, because the volume maximum in the air cavity of working herein, thereby maximum gas can be obtained; Simultaneously, relief opening is arranged on the rotation downstream side of position 1 and near position 1, because the volume minimum in 1 place, position work air cavity, therefore the gas in the work air cavity will be discharged from the relief opening followed by 1 back, position after by compression farthest immediately, thereby can significantly improve the working efficiency of micro air pump of the present invention.
In addition, in micro air pump of the present invention, cylinder head, cylinder block, air cylinder base, eccentric wheel and blade preferably can adopt wear-resisting self lubricating material manufacturing, therefore in the working procedure of air pump, basically do not need to add lubricant oil, and reliable performance greatly reduces the maintenance cost of routine work.
In addition, micro air pump of the present invention is preferred on the automobile, as the standard fitting use of automobile.When micro air pump of the present invention was used on the automobile, this air pump can adopt vehicle power, and during air pump work, gas enters air cavity from suction port, exports from relief opening after blade compresses.The one-way valve that suction port and relief opening all do not have traditional air pump to use always, overall structure is simple, easy for installation, cheap for manufacturing cost, can be widely used on the various functions of motor vehicle, supports, starts centrally controrlled locking system as seat lumbar.
Claims (10)
1, a kind of micro air pump, comprise cylinder head, cylinder block, air cylinder base and drive motor, it is characterized in that, the suction port and the relief opening that on cylinder head, have perforation, cavity in this suction port and relief opening and the cylinder block is communicated with, in cavity, has eccentric wheel by the rotating shaft rotary driving of drive motor, on eccentric circumference, have a plurality of grooves, in groove, be provided with blade, define a plurality of work air cavitys between the lower surface of the outer end of described blade and the internal surface of cylinder block, cylinder head and the upper surface of air cylinder base.
2, micro air pump as claimed in claim 1, wherein, cylinder head, cylinder block, air cylinder base and drive motor axially are mounted to straight tubular construction successively.
3, micro air pump as claimed in claim 2 wherein has pressing plate on the cylinder head.
4, micro air pump as claimed in claim 2 wherein, along the circumferential direction has air inlet duct and air vent at the cylinder head lower surface, and this air inlet duct and air vent are communicated with suction port and relief opening respectively.
5, micro air pump as claimed in claim 4, wherein, the aperture angle α of described air inlet duct is 3～5 times of aperture angle β of described air vent.
6, micro air pump as claimed in claim 2, wherein, the center line of described groove departs from eccentric radial direction.
7, micro air pump as claimed in claim 6, wherein, the included angle X between the center line of described groove and the eccentric radial direction is that 75 degree are to 82 degree.
8, micro air pump as claimed in claim 2, wherein, the nearest position of eccentric wheel edge and cylinder block inwall is a primary importance, eccentric wheel edge and cylinder block inwall distance position farthest are the second place, described suction port is positioned near the second place, and described relief opening is positioned near the eccentric wheel rotation downstream of primary importance.
9, micro air pump as claimed in claim 2, wherein, at least one in described cylinder head, cylinder block, air cylinder base, eccentric wheel and the blade is by wear-resisting self lubricating material manufacturing.
10, as any described micro air pump in the above-mentioned claim, this micro air pump uses as auto parts machinery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510132095 CN100532845C (en) | 2005-12-21 | 2005-12-21 | Micro air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510132095 CN100532845C (en) | 2005-12-21 | 2005-12-21 | Micro air pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987105A true CN1987105A (en) | 2007-06-27 |
| CN100532845C CN100532845C (en) | 2009-08-26 |
Family
ID=38184022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510132095 Active CN100532845C (en) | 2005-12-21 | 2005-12-21 | Micro air pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100532845C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782327A (en) * | 2009-11-26 | 2012-11-14 | 黑拉许克联合股份有限公司 | Vane pump |
| CN102812249A (en) * | 2009-11-12 | 2012-12-05 | 依达克斯研发国际私人有限公司 | Improved Fluid Compressor And/or Pump Arrangement |
| CN109340111A (en) * | 2018-09-06 | 2019-02-15 | 无锡晶晟科技股份有限公司 | A kind of leak detection air pump modular device |
| CN110821569A (en) * | 2019-12-23 | 2020-02-21 | 广西师范大学 | Pneumatic engine |
| CN112155288A (en) * | 2020-09-29 | 2021-01-01 | 杭州光文贸易有限公司 | Drying equipment capable of fixing multiple shoe products simultaneously for shoemaking |
| CN114109138A (en) * | 2021-10-29 | 2022-03-01 | 陆清 | Door lock tilting and pressing mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009056008A1 (en) * | 2009-11-26 | 2011-06-01 | Hella Kgaa Hueck & Co. | Vane pump |
-
2005
- 2005-12-21 CN CN 200510132095 patent/CN100532845C/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102812249A (en) * | 2009-11-12 | 2012-12-05 | 依达克斯研发国际私人有限公司 | Improved Fluid Compressor And/or Pump Arrangement |
| CN102812249B (en) * | 2009-11-12 | 2016-04-13 | 依达克斯研发国际私人有限公司 | The fluid compression engine improved and/or pump-unit |
| CN102782327A (en) * | 2009-11-26 | 2012-11-14 | 黑拉许克联合股份有限公司 | Vane pump |
| CN109340111A (en) * | 2018-09-06 | 2019-02-15 | 无锡晶晟科技股份有限公司 | A kind of leak detection air pump modular device |
| CN110821569A (en) * | 2019-12-23 | 2020-02-21 | 广西师范大学 | Pneumatic engine |
| CN110821569B (en) * | 2019-12-23 | 2024-04-02 | 广西师范大学 | Pneumatic engine |
| CN112155288A (en) * | 2020-09-29 | 2021-01-01 | 杭州光文贸易有限公司 | Drying equipment capable of fixing multiple shoe products simultaneously for shoemaking |
| CN114109138A (en) * | 2021-10-29 | 2022-03-01 | 陆清 | Door lock tilting and pressing mechanism |
| CN114109138B (en) * | 2021-10-29 | 2023-01-06 | 温州市天锐工贸有限公司 | Door lock tilting and pressing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100532845C (en) | 2009-08-26 |
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