CN105485009A - Power-driven vacuum pump for car braking system - Google Patents
Power-driven vacuum pump for car braking system Download PDFInfo
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- CN105485009A CN105485009A CN201511011574.XA CN201511011574A CN105485009A CN 105485009 A CN105485009 A CN 105485009A CN 201511011574 A CN201511011574 A CN 201511011574A CN 105485009 A CN105485009 A CN 105485009A
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- Prior art keywords
- cover plate
- check valve
- upper cover
- vacuum pump
- groove
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a power-driven vacuum pump for a car braking system, and belongs to the field of car braking. The power-driven vacuum pump comprises a motor, and a lower shell and an upper shell body are internally provided with a pump body assembly, a one-way valve assembly, a cam and a connecting rod assembly; and single blades are adopted for rotating at a high speed in an annular cavity and are matched with the cam, an air blocking sheet and the one-way valve to move to form a vacuum cavity. The inner wall of an annular cavity formed by the blade and a blocking sheet rotor and the inner wall of an annular cavity formed by the blade, an upper cover plate and a lower cover plate are in clearance fit, friction cannot be generated, heat cannot be generated, long-time running can be achieved, the reliability is improved, and noise is reduced; and air pumping and air discharging are carried out at the same time, the vacuumizing rate is high, air leakage is reduced, and the final vacuum degree of the vacuum pump can be improved.
Description
Technical field
The invention belongs to field of automobile brake, be applied to electric motor car or with in the gasoline car braking system of turbosupercharged engine, for vacuum boosting braking system provides vacuum source.
Background technique
Along with the progress of automotive engineering, turbocharging technology is widely used in passenger car petrol engine, significantly improves fuel economy and the power performance of automobile.But turbosupercharged engine can cause gasoline engines vacuum degree deficiency, lower than the degree of vacuum needed for braking system vacuum booster, cause braking force not enough, affect the brake safe performance of automobile.Therefore, need to use electric vacuum pump as secondary vacuum source, when gasoline engines vacuum degree deficiency, for vacuum booster provides auxiliary vacuum source.In addition, pure electric vehicle instead of petrol engine due to motor, does not have petrolic intake manifold to provide vacuum source, and independently electric vacuum pump must be used to provide vacuum for vacuum booster.Therefore, electric vacuum pump is more and more extensive in automobile industry demand.Current electric vacuum pump mainly contains three kinds: vane pump, reciprocating pump, diaphragm pump.Wherein, it is comparatively large that reciprocating pump shortcoming is that piston and casing wall rub, and bleed and exhaust is two strokes, efficiency and endurance quality poor, diaphragm pump shortcoming requires higher to the material capability of diaphragm, needs to use high temperature resistant 120 DEG C, low temperature resistant-40 DEG C, and can under high-frequency reciprocating motion operating mode the special rubber of reliably working, cost is higher, the easy aged deterioration of elastomer diaphragm, vane pump, such as patent " electric vacuum pump for automobile, the patent No.: 200910100508.8 ", use high temperature resistant, the graphite rotator of rub resistance and blade, when rotor banding moving vane rotates, blade contacts with stator inner wall dry friction under the influence of centrifugal force, produce the cavity that volume constantly changes, generation vacuumizes effect, obtain applying the most widely at automobile manufacturing field at present, but its shortcoming is: 1 noise is large, special in electric motor car, because drive motor instead of fuel engine, drive motor noise noise that is relative and fuel engine reduces greatly, the operating noise of electric vacuum pump just becomes one of main vehicle noise source, affect driver's ride comfort.Rotor banding moving vane High Rotation Speed during 2 vacuum pump work, more than rotating speed 5000rpm, the friction of blade and stator can produce larger frictional force, reduces the efficiency of vacuum pump evacuation.3 blades can produce a large amount of frictional heats with the mutual friction of stator phase, and vacuum pump works long hours and understands motor damage, reduces the reliability of vacuum pump work.
Summary of the invention
The invention provides a kind of brake system of car electric vacuum pump, the noise existed at present be large to solve, the problem that friction reduces vacuum pump evacuation efficiency, frictional heat reduces vacuum pump functional reliability of blade and stator.
The present invention adopts technological scheme to be: comprise motor, have pump assembly, check valve assembly, cam, link assembly in lower shell body and upper shell;
Described pump assembly is by upper cover plate, lower cover plate, seal ring, rotor, blade, screw, rotor shaft forms, porose in the middle of described upper cover plate, ring-shaped step one is had inside peritreme, upper cover plate radial direction has groove, radial depth is no more than rotor periphery in the assembled condition, lower cover plate upper-end surface has circular groove near outer rim, rectangular seal with gap is arranged in groove, porose in the middle of lower cover plate, there is ring-shaped step two inner side, lower cover plate radial direction has restraining groove, rotor upper and lower end face outer rim all has ring-shaped step, with rotor shaft interference fit, with upper cover plate ring-shaped step one, lower cover plate ring-shaped step two forms Spielpassung respectively, composition annular chamber, rotor periphery radial direction has T-slot, just tapped hole is had to T-slot upper-end surface, blade upper-end surface and upper cover plate Spielpassung, lower end surface and lower cover plate Spielpassung, blade radial outer rim and upper cover plate inwall Spielpassung, described upper cover plate has air inlet duct and outgassing groove in the both sides of groove circumferencial direction, penetrates into upper cover plate cavity inside, and what be connected with outgassing groove with air inlet duct is the rectangular cavity of width expansion,
Described check valve assembly comprises suction port check valve assembly and air outlet check valve assembly:
Described suction port check valve assembly is fixed on the air inlet duct end of upper cover plate by screw, is sealed between check valve body and upper cover plate by gasket seal, and intake valve port check valve sheet is installed towards upper cover plate side;
Described air outlet check valve assembly is fixed on the outgassing groove end of upper cover plate by screw, and air outlet check valve assembly and suction port check valve assembly are distinguished as valve port check valve sheet of giving vent to anger and install towards sealing plug side;
Described cam is connected with rotor shaft interference fit, and one end and rotor shaft shoulder are located, and cam projection maximum displacement point and blades installation position are in a radial plane;
Described link assembly comprises, connecting rod three is right angle bar, one end and airtight plate are connected, corner and fixed plate hinged, connecting rod one is right angle bar, and one end is provided with little bearing, corner and fixed plate hinged, return spring is connected with connecting rod two one end, the other end is fixed on lower cover plate by fixed plate, and connecting rod near the confined planes of the restraining groove of lower cover plate, ensures that airtight plate side and rotor leave gap under the effect of spring-return power;
Upper shell and upper cover plate, lower cover plate, lower shell body are fixedly connected sequentially, and upper shell and lower shell body form Seal cage; Motor is fixedly connected with upper shell, and rotor is fixedly connected with motor, rotor and upper cover plate, lower cover plate matching gap.
The airtight plate lower right corner of the present invention is obtuse angle edge.
Annular chamber cross section of the present invention is rectangle, and the axial length of side is the radial length of side 2 ~ 3 times.
Blade of the present invention exposes the thick 2 ~ 3mm of rotor portion, side is plane, opposite side is multiple wide 2 ~ 3mm straight troughs, straight trough is 2/1 to three/2nds of vane thickness deeply, groove sidewall thickness be straight trough wide 1/1 to five/4th, blade outer rim cusp and bottom land transition portion are arc surface.
Gradient 20 degree to 30 degree before projection maximum displacement point of the present invention, after maximum displacement point, gradient is 70 degree to 80 degree.
Blade afterbody of the present invention is T-shaped body, and blade is fixed by screws in T-slot, and the external edge of T-shaped and rotor engagement part are cylndrical surface.
Restraining groove radial direction of the present invention has two width, in the assembled condition with the wide 0.5 ~ 1mm of airtight plate Spielpassung part, with the wide 2 ~ 4mm of connecting rod three Spielpassung part.
Suction port check valve sheet of the present invention is made up of low temperature resistant ageing-resistant fluosilicic rubber, thick 0.5 ~ 1mm, and one end is nose cone, is connected with check valve body center hole.
Air inlet duct of the present invention and outgassing groove be distance groove 2 ~ 3mm respectively, and air inlet duct and groove width of giving vent to anger are 2 ~ 3mm, and height is identical with annular chamber height, dark 0.5 ~ 1mm.
Rectangular cavity width of the present invention is 4 ~ 5 times of air inlet duct width.
The invention has the advantages that:
1, adopt single blade High Rotation Speed in annular housing, form vacuum chamber with cam, airtight plate, one-way valve routing motion.Blade and catch rotor, blade and upper cover plate, the annular chamber inwall Spielpassung that lower cover plate is formed, can not produce friction, can not produce heat, can long time running, and reliability improves, and noise reduces.And common vane pump will produce a large amount of heat in High Rotation Speed, and have frictional vibration noise.
2, only have a blade, the time that the process that vacuumizes of often rotating a circle accounts for is more, and bleeds and be vented and carry out simultaneously, and the speed vacuumized is fast.And reciprocating pump, diaphragm pump air inlet and exhaust are two strokes, efficiency is lower.
3, the special shape of blade, reduces the leakage of gas, and the ultimate vacuum that vacuum pump can reach improves.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the explosive view of Fig. 1;
Fig. 3 is the three-dimensional view of upper cover plate of the present invention;
Fig. 4 is the three-dimensional view of blade of the present invention;
Fig. 5 is the cross section view of blade of the present invention;
Fig. 6 is the partial view of cam of the present invention;
In figure: motor 1, check valve body 2, upper shell 3, lower shell body 4, rotor shaft 5, spring 6, lower cover plate 7, seal ring 8, blade 9, rotor 10, screw 11, upper cover plate 12, gasket seal 13, suction port check valve sheet 14, suction port 15, screw 16, sealing plug 17, air outlet check valve sheet 18, air outlet 19, projection 20, cam 21, airtight plate 22, fixed plate 23, nose cone 24, fixed plate 25, bearing 26, rectangular cavity 27, outgassing groove 28, groove 29, straight trough 30, air inlet duct 31, cylndrical surface 32, arc surface 33, connecting rod 1, connecting rod 2 35, connecting rod 3 36, ring-shaped step 1, obtuse angle edge 38, restraining groove 39, ring-shaped step 2 40, gap 41, annular chamber 42.
Embodiment
Comprise motor 1, in lower shell body 4 and upper shell 3, have pump assembly, check valve assembly, cam 21, link assembly;
Described pump assembly is by upper cover plate 12, lower cover plate 7, seal ring 8, rotor 10, blade 9, screw 11, rotor shaft 5 forms, porose in the middle of described upper cover plate 12, ring-shaped step 1 is had inside peritreme, upper cover plate 12 radial direction has groove 29, radial depth is no more than rotor 10 outer rim in the assembled condition, lower cover plate 7 upper-end surface has circular groove near outer rim, rectangular seal 8 with gap is arranged in groove, porose in the middle of lower cover plate 7, there is ring-shaped step 2 40 inner side, lower cover plate 7 radial direction has restraining groove 39, restraining groove 39 radial direction has two width, in the assembled condition with the wide 0.5 ~ 1mm of airtight plate 22 Spielpassung part, with the wide 2 ~ 4mm of connecting rod 3 36 Spielpassung part, rotor 10 upper and lower end face outer rim all has ring-shaped step, with rotor shaft 5 interference fit, with upper cover plate 12 ring-shaped step 1, lower cover plate 7 ring-shaped step 2 40 forms Spielpassung respectively, composition annular chamber 42, this annular chamber 42 cross section is rectangle, the axial length of side is the radial length of side 2 ~ 3 times, the pendulum angle of airtight plate 22 can be reduced in this rectangular cross-section, make the time of switching shorter.Ring-shaped step Spielpassung can increase the resistance that gas enters annular chamber 42, improve and vacuumize efficiency, rotor 10 outer rim radial direction has T-slot, just tapped hole is had to T-slot upper-end surface, blade 9 afterbody is T-shaped body, blade 9 is fixed in T-slot by screw 11, and sealer of annotating, the external edge of T-shaped and rotor 10 mating part are cylndrical surface 32, blade 9 upper-end surface and upper cover plate 12 Spielpassung, lower end surface and lower cover plate 7 Spielpassung, blade 9 radially outer edge and upper cover plate 12 inwall Spielpassung, blade 9 exposes the thick 2 ~ 3mm of rotor 10 part, side is plane, opposite side is multiple wide 2 ~ 3mm straight troughs 30, straight trough is 2/1 to three/2nds of blade 9 thickness deeply, groove sidewall thickness be straight trough 30 wide 1/1 to five/4th, blade 9 outer rim cusp and bottom land transition portion are arc surface 33,
Described upper cover plate 12 has air inlet duct 31 and outgassing groove 28 in the both sides of groove 29 circumferencial direction, air inlet duct 31 and outgassing groove 28 be distance groove 292 ~ 3mm respectively, penetrate into upper cover plate 12 cavity inside, air inlet duct 31 and outgassing groove 28 is wide is 2 ~ 3mm, height is highly identical with annular chamber 42, dark 0.5 ~ 1mm, what be connected with outgassing groove 28 with air inlet duct 31 is the rectangular cavity 27 of width expansion, rectangular cavity 27 width is 4 ~ 5 times of air inlet duct 31 width, air inlet duct 31 and outgassing groove 28 width narrower, the blade 9 that can increase each circulation like this vacuumizes effective travel, air inlet duct 31 and outgassing groove 28 degree of depth more shallow, rectangular cavity 27 width be attached thereto increases, the resistance of air inlet and exhaust can be reduced,
Described check valve assembly is divided into suction port check valve assembly and air outlet check valve assembly,
Suction port check valve assembly is fixed on air inlet duct 31 end of upper cover plate 12 by screw 16, sealed by gasket seal 13 between check valve body 2 and upper cover plate 12, suction port check valve sheet 14 is made up of low temperature resistant ageing-resistant fluosilicic rubber, thick 0.5 ~ 1mm, one end is nose cone 24, be connected with check valve body 2 center hole, intake valve port check valve sheet is installed towards upper cover plate 12 side;
Air outlet check valve assembly is fixed on outgassing groove 28 end of upper cover plate 12 by screw 16.Air outlet check valve assembly and suction port check valve assembly are distinguished as valve port check valve sheet 18 of giving vent to anger and install towards sealing plug 17 side;
Described cam 21 is connected with rotor shaft 5 interference fit, and one end and rotor shaft 5 shoulder are located, and cam 21 projection 20 maximum displacement point and blade 9 mounting point are in a radial plane; First the part gradient contacted with bearing 26 when cam 21 rotates 20 degree to 30 degree, impacts less, and after having crossed maximum displacement point, gradient is 70 degree to 80 degree, such airtight plate 22 can under the effect of spring 6 rapid return;
Described link assembly comprises, connecting rod 3 36 is right angle bar, one end and airtight plate 22 are connected, corner and fixed plate 25 hinged, connecting rod 1 is right angle bar, one end is provided with little bearing 26, corner and fixed plate 25 hinged, return spring 6 is connected with connecting rod 2 35 one end, the other end is fixed on lower cover plate 7 by fixed plate 23, connecting rod under the effect of spring 6 restoring force near the confined planes of the restraining groove 39 of lower cover plate 7, ensure that airtight plate 22 side and rotor 10 leave gap 41, airtight plate 22 lower right corner is obtuse angle edge 38, this shape of airtight plate 22 can reduce the angle of blade 9 swing when not affecting sealing, improve pumping efficiency,
Upper shell 3 and upper cover plate 12, lower cover plate 7, lower shell body 4 is fixedly connected sequentially, and upper shell 3 and lower shell body 4 form Seal cage;
Motor 1 is fixedly connected with upper shell 3, and adjusted position ensures rotor 10 and upper cover plate 12, lower cover plate 7 matching gap, and rotor 10 freely can be rotated under the drive of motor 1.
Working procedure of the present invention comprises the following steps:
Step 1: driven by motor rotor turns, air inlet duct rectangular opening that blade outer rim is inswept, now airtight plate blocks the annular chamber rectangular cross-section that upper cover plate and lower cover plate are formed under the effect of return spring at groove place, blade continues to rotate sweeping annular chamber, the annular chamber volume that sweeping is crossed is increasing, and ambient air has little time to supplement by coordinating gap, and the annular chamber inside that sweeping is crossed forms vacuum, suction port check valve sheet is opened, and air enters from suction port end.The annular chamber volume in front, blade rotary direction reduces, and air is compressed, and air outlet check valve sheet is opened, and air is discharged from air outlet.
Step 2: when blade outer rim sweeping crosses outgassing groove rectangular opening, in the annular chamber that sweeping is crossed, degree of vacuum makes the check valve sheet of air outlet close, and in the annular chamber that sweeping is crossed, degree of vacuum continues to increase.When blade is close to airtight plate, cam projection part drivening rod assembly, airtight plate swings rapidly, and for blade opens annular chamber rectangular cross-section, blade is rapidly by annular chamber rectangular cross-section.
Step 3: when airtight plate is opened, the air in housing has and enters into annular chamber from straight trough on a small quantity, and now suction port check valve sheet is closed, and inlet vacuum degree remains unchanged.Blade continues to rotate sweeping, repeats step 1.
In blade sweeping process, because blade outer rim and bottom land transition portion are circular arc, according to fluid mechanics principle, air major part flows to blade bottom along circular arc, decreases the leakage of edge air.In addition, due to multiple straight troughs of blade side, when blade contacts with gas, gas dispersion at a high speed, in each straight trough, forms little vortex, consumes the energy of gas, reduces the gas noise in blade rotary process.
Because the rotating speed of motor is very fast, be generally 2000rpm to 5000rpm, in a circulation, the amount of leakage in gap is relatively minimum with the air quantity proportion entered from suction port.Rotating speed is faster, and the degree of vacuum that suction port can finally reach is higher, and the efficiency of bleeding is also faster.
Claims (10)
1. a brake system of car electric vacuum pump, is characterized in that: comprise motor, has pump assembly, check valve assembly, cam, link assembly in lower shell body and upper shell;
Described pump assembly is by upper cover plate, lower cover plate, seal ring, rotor, blade, screw, rotor shaft forms, porose in the middle of described upper cover plate, ring-shaped step one is had inside peritreme, upper cover plate radial direction has groove, radial depth is no more than rotor periphery in the assembled condition, lower cover plate upper-end surface has circular groove near outer rim, rectangular seal with gap is arranged in groove, porose in the middle of lower cover plate, there is ring-shaped step two inner side, lower cover plate radial direction has restraining groove, rotor upper and lower end face outer rim all has ring-shaped step, with rotor shaft interference fit, with upper cover plate ring-shaped step one, lower cover plate ring-shaped step two forms Spielpassung respectively, composition annular chamber, rotor periphery radial direction has T-slot, just tapped hole is had to T-slot upper-end surface, blade upper-end surface and upper cover plate Spielpassung, lower end surface and lower cover plate Spielpassung, blade radial outer rim and upper cover plate inwall Spielpassung, described upper cover plate has air inlet duct and outgassing groove in the both sides of groove circumferencial direction, penetrates into upper cover plate cavity inside, and what be connected with outgassing groove with air inlet duct is the rectangular cavity of width expansion,
Described check valve assembly comprises suction port check valve assembly and air outlet check valve assembly:
Described suction port check valve assembly is fixed on the air inlet duct end of upper cover plate by screw, is sealed between check valve body and upper cover plate by gasket seal, and intake valve port check valve sheet is installed towards upper cover plate side;
Described air outlet check valve assembly is fixed on the outgassing groove end of upper cover plate by screw, and air outlet check valve assembly and suction port check valve assembly are distinguished as valve port check valve sheet of giving vent to anger and install towards sealing plug side;
Described cam is connected with rotor shaft interference fit, and one end and rotor shaft shoulder are located, and cam projection maximum displacement point and blades installation position are in a radial plane;
Described link assembly comprises, connecting rod three is right angle bar, one end and airtight plate are connected, corner and fixed plate hinged, connecting rod one is right angle bar, and one end is provided with little bearing, corner and fixed plate hinged, return spring is connected with connecting rod two one end, the other end is fixed on lower cover plate by fixed plate, and connecting rod near the confined planes of the restraining groove of lower cover plate, ensures that airtight plate side and rotor leave gap under the effect of spring-return power;
Upper shell and upper cover plate, lower cover plate, lower shell body are fixedly connected sequentially, and upper shell and lower shell body form Seal cage; Motor is fixedly connected with upper shell, and rotor is fixedly connected with motor, rotor and upper cover plate, lower cover plate matching gap.
2. brake system of car electric vacuum pump according to claim 1, is characterized in that: the described airtight plate lower right corner is obtuse angle edge.
3. brake system of car electric vacuum pump according to claim 1, is characterized in that: described annular chamber cross section is rectangle, and the axial length of side is the radial length of side 2 ~ 3 times.
4. brake system of car electric vacuum pump according to claim 1, it is characterized in that: described blade exposes the thick 2 ~ 3mm of rotor portion, side is plane, opposite side is multiple wide 2 ~ 3mm straight troughs, straight trough is 2/1 to three/2nds of vane thickness deeply, groove sidewall thickness be straight trough wide 1/1 to five/4th, blade outer rim cusp and bottom land transition portion are arc surface.
5. brake system of car electric vacuum pump according to claim 1, is characterized in that: gradient 20 degree to 30 degree before described projection maximum displacement point, after maximum displacement point, gradient is 70 degree to 80 degree.
6. brake system of car electric vacuum pump according to claim 1, is characterized in that: described blade afterbody is T-shaped body, and blade is fixed by screws in T-slot, and the external edge of T-shaped and rotor engagement part are cylndrical surface.
7. brake system of car electric vacuum pump according to claim 1, is characterized in that: described restraining groove radial direction has two width, in the assembled condition with the wide 0.5 ~ 1mm of airtight plate Spielpassung part, with the wide 2 ~ 4mm of connecting rod three Spielpassung part.
8. brake system of car electric vacuum pump according to claim 1, is characterized in that: described suction port check valve sheet is made up of low temperature resistant ageing-resistant fluosilicic rubber, thick 0.5 ~ 1mm, and one end is nose cone, is connected with check valve body center hole.
9. brake system of car electric vacuum pump according to claim 1, is characterized in that: described air inlet duct and outgassing groove be distance groove 2 ~ 3mm respectively, and air inlet duct and groove width of giving vent to anger are 2 ~ 3mm, and height is identical with annular chamber height, dark 0.5 ~ 1mm.
10. brake system of car electric vacuum pump according to claim 1, is characterized in that: described rectangular cavity width is 4 ~ 5 times of air inlet duct width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011574.XA CN105485009B (en) | 2015-12-30 | 2015-12-30 | A kind of brake system of car electric vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011574.XA CN105485009B (en) | 2015-12-30 | 2015-12-30 | A kind of brake system of car electric vacuum pump |
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| Publication Number | Publication Date |
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| CN105485009A true CN105485009A (en) | 2016-04-13 |
| CN105485009B CN105485009B (en) | 2017-09-22 |
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| CN201511011574.XA Active CN105485009B (en) | 2015-12-30 | 2015-12-30 | A kind of brake system of car electric vacuum pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154702A (en) * | 2017-07-12 | 2017-09-12 | 湖北二电电气有限公司 | It is a kind of efficient without windage motor |
| CN109406225A (en) * | 2018-12-12 | 2019-03-01 | 青岛海颐天仪器有限公司 | The vacuum sampling pump acquired for flue gas in atmosphere and particulate matter |
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| EP2626510A1 (en) * | 2012-02-13 | 2013-08-14 | Pierburg Pump Technology GmbH | Motor vehicle auxiliary power unit vacuum pump |
| CN203146329U (en) * | 2013-03-07 | 2013-08-21 | 荆州久阳汽车零部件制造有限公司 | Direct-current electron vacuum pump of automobile braking system |
| CN103306979A (en) * | 2013-06-28 | 2013-09-18 | 常州市东南电器电机有限公司 | Electronic vacuum pump for new energy vehicle brake vacuum booster |
| CN205330976U (en) * | 2015-12-30 | 2016-06-22 | 吉林东光奥威汽车制动系统有限公司 | Electric vacuum pump for automobile brake system |
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| CN107154702A (en) * | 2017-07-12 | 2017-09-12 | 湖北二电电气有限公司 | It is a kind of efficient without windage motor |
| CN107154702B (en) * | 2017-07-12 | 2023-04-07 | 湖北二电电气有限公司 | High-efficient windage-free motor |
| CN109406225A (en) * | 2018-12-12 | 2019-03-01 | 青岛海颐天仪器有限公司 | The vacuum sampling pump acquired for flue gas in atmosphere and particulate matter |
| CN109406225B (en) * | 2018-12-12 | 2024-04-26 | 青岛海颐天仪器有限公司 | Vacuum sampling pump for collecting smoke and particulate matters in atmosphere |
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