CN108506211A - Automobile brake rotary-vane vaccum pump - Google Patents

Automobile brake rotary-vane vaccum pump Download PDF

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Publication number
CN108506211A
CN108506211A CN201810263101.6A CN201810263101A CN108506211A CN 108506211 A CN108506211 A CN 108506211A CN 201810263101 A CN201810263101 A CN 201810263101A CN 108506211 A CN108506211 A CN 108506211A
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CN
China
Prior art keywords
pump housing
oil
rotor
hole
vessel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810263101.6A
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Chinese (zh)
Other versions
CN108506211B (en
Inventor
朱士剑
黄中良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG DAXING TECHNOLOGY Co Ltd
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ZHEJIANG DAXING TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to CN201810263101.6A priority Critical patent/CN108506211B/en
Publication of CN108506211A publication Critical patent/CN108506211A/en
Application granted granted Critical
Publication of CN108506211B publication Critical patent/CN108506211B/en
Active legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-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
    • F04C18/34Rotary-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
    • F04C18/344Rotary-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
    • F04C18/3441Rotary-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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/001Radial sealings for working fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/02Liquid sealing for high-vacuum pumps or for compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02Lubrication; Lubricant separation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The technical scheme is that a kind of automobile brake rotary-vane vaccum pump, including the pump housing and cover board, rotor and blade, pump housing vessel is separated into inlet chamber and discharge chamber by blade, the pump housing bottom offers mounting hole, the rotor pass through after mounting hole with connect key connection, oil sealing block is mounted on selecting and appointing both sides to be contacted with pump housing vessel medial surface;Air admission hole is offered on the pump housing vessel side wall, pump housing vessel bottom surface offers oil-feed tank, oil extraction stomata and reversed outage, the oil-feed tank is connected with mounting hole and is extended axially downward along mounting hole side wall, the mounting hole side wall is provided with fuel feed hole, the rotor outer surface is provided with annular groove, and fuel feed hole is connected with oil-feed tank by annular groove;The pump housing back side is connected with reed and banking stop by fixing bolt, and the reed covers oil extraction stomata and reversed outage.Intake and exhaust of the present invention are efficient, and speed is fast.

Description

Automobile brake rotary-vane vaccum pump
Technical field
The present invention relates to a kind of vacuum pumps, more particularly, to a kind of automobile brake rotary-vane vaccum pump.
Background technology
The braking of automobile is one of main performance of automobile, is the important leverage of galloping, is related to people Life and safe property.For ordinary passenger car and light commercial vehicle, braking system mainly uses hydraulic pressure as transmission matchmaker It is situated between, compared with it can provide the Pneumatic braking system of power source, it can not provide brake boost for driver.Therefore, in order to carry The braking ability of high automobile, mitigates the labor intensity of driver, and the braking system of modern passenger cars and light commercial vehicle generally installs additional Power assisting device, i.e., using the servo brake system with assist function.Servo brake system refers to the base braked in Manual hydraulic A set of power assisting device that brake force is provided by other energy is added on plinth, makes manpower can dual-purpose, i.e. dual-purpose manpower and machine with power Braking system of the tool power as braking energy source.And vacuum booster is most common power assisting device in servo brake system, therefore, Servo brake system is also referred to as vacuum boosting braking system.Vacuum booster relies on the pressure difference of its internal vacuum and atmospheric pressure Power-assisted is provided, therefore vacuum chamber must be maintained at certain vacuum degree, could externally export brake boost.Traditional gasoline engine Machine at work, generates higher vacuum degree at inlet manifold, can be that vacuum booster constantly provides vacuum source, ensure The normal operation of servo brake system.But now to meet environmental requirement and gasoline direct injection engine newly developed, air inlet discrimination Vacuum degree is relatively low at pipe, can not provide enough vacuum sources.In addition, on hybrid vehicle, since engine cannot be complete When work, can not also ensure enough vacuum degrees;And for pure electric vehicle, even more need external vacuum source to ensure to brake completely Performance.Accordingly, it is desirable to provide a kind of new scheme solves the problems, such as the power-assisted of brake system of car, ensure the braking ability of automobile It is not reduced because of the change of engine structure.Vacuum pump is the device that negative pressure is provided to booster.Vehicle is for vacuum pump master It is required that having:Small, small power consumption, fast response time, vacuum degree are higher, NVH superior performances, dry-running, dependable performance, make Valence is more low.
At present there is the pumping equipment type of comparative maturity in machinery industry:Liquid-ring vacuum pump, reciprocating vacuum pump, Rotary-vane vaccum pump, slide-valve vacuum pump, Roots type vacuum pump, claw type formula vacuum pump, DRY SCROLL VACUUM PUMP, screw-type vacuum pump With molecular formula vacuum pump.In terms of automobile brake, it is contemplated that the characteristics of auto electronic vacuum pump, highest Development Feasibility is past Compound vacuum pump and rotary-vane vaccum pump.In comparison, rotary-vane vaccum pump due to its dynamic balance performance it is preferable, vibration noise Small and development prospect with bigger, but existing rotary-vane vaccum pump intake and exhaust efficiency is low, speed is slow, can be deposited during use The oil leak the phenomenon that, while serious wear between cover board and blade.
Invention content
In view of the above-mentioned problems, the present invention is intended to provide a kind of automobile brake rotary-vane vaccum pump, intake and exhaust are efficient, speed Degree is fast, will not be worn between oil leak and cover board and blade using process smaller.
The technical scheme is that a kind of automobile brake rotary-vane vaccum pump, including surface offer vessel the pump housing, Cover board, rotor and the blade being connect with pump housing removable seal, pump housing vessel is separated into inlet chamber and discharge chamber by blade, described Pump housing bottom deviates central area and is provided in the axial direction with mounting hole, and the rotor is detachably fixed after passing through mounting hole with connecting key Connection, the blade are inserted into the slot of rotor, and two outside of blade is provided with locating slot, and oil sealing block is mounted in locating slot It is contacted afterwards with pump housing vessel medial surface, the rotor drives blade to be transported in the vessel inward turning of the pump housing by the driving of connecting key Dynamic, blade slides along slot length direction and oil sealing block is contacted with pump housing vessel medial surface always simultaneously;The pump housing Air admission hole is offered on vessel side wall, pump housing vessel bottom surface offers oil-feed tank, oil extraction stomata and close to air inlet position Reversed outage, the oil extraction stomata and reversed outage perforation pump housing bottom surface, the oil-feed tank is connected with mounting hole and edge It mounting hole side wall to extend axially downward, the mounting hole side wall is provided with fuel feed hole, and the rotor outer surface corresponds to oil inlet Hole and oil-feed tank section are provided with annular groove, and fuel feed hole is connected with oil-feed tank by annular groove, and the fuel feed hole other end is located at pump On the outside of the body back side;The pump housing back side is connected with reed and banking stop by fixing bolt, and the reed covers oil extraction stomata With reversed outage, the banking stop, which corresponds to, to be inclined outwardly at oil extraction stomata and reversed outage and has gap with reed.
Preferably, the cross sectional shape of the pump housing vessel is closed curved shape, and arbitrary two pass through at mounting hole center The line segment length having the same intersected with the cross sectional boundary.Ensure that blade is protected with pump housing vessel side always in rotary course Sealing state is held, that is, plays the effect for preferably obstructing inlet chamber and discharge chamber.
Further, the rotor outer surface is in contact with pump housing vessel side, and contact point is located at air admission hole and reversed The rear of outage, contact point is at reversed outage.The initial position for determining inlet chamber, better ensures that in the course of work The efficiency of air-breathing exhaust.
Preferably, the air admission hole is to extending inlet end mounting portion on the outside of the pump housing, in the inlet end mounting portion into Check valve assembly is provided in stomata.When rotor inverts, check valve assembly closes air admission hole so that the gas in script inlet chamber Body and lubricating oil in reversed outage smoothly via being discharged.
Preferably, pump housing vessel bottom is provided with oil extraction air drain, and the oil extraction air drain is connected with oil extraction stomata.Increase The region of big oil extraction gas, so that the oil gas in discharge chamber quickly enters the discharge of oil extraction stomata in blade rotary course.
Preferably, the rotor end-face center opens up fluted, and slot joins with groove.It reduces between blade and slot Contact length, to reduce the abrasion between blade and slot.
Further, the cover board inner surface is provided with oil storage tank, and the oil storage tank is in contact with rotor top surface, rotor Lubricating oil when rotation in oil storage tank, which enters in the gap between blade and slot, to be lubricated.Between reduction blade and cover board, Abrasion between blade and rotor slot.
Preferably, the pump housing top surface is provided with annular groove, sealing ring is equipped in annular groove, after cover board is threadedly coupled with the pump housing It is sealed by sealing ring.
Structure of the invention is novel, reliable using installation, and air-breathing exhaust efficiency is high, and speed is fast, while wear-resistant, dynamic balance Can be good, it will not be worn between oil leak and cover board and blade using process smaller.
Description of the drawings
Fig. 1 is the explosive view of the present invention;
Fig. 2 is the explosive view at another visual angle of the present invention;
Fig. 3 is the structural schematic diagram of the present invention;
Fig. 4 is the structural schematic diagram at another visual angle of the present invention;
Fig. 5 is that the present invention removes the structural schematic diagram after cover board;
Fig. 6 is the structural schematic diagram of middle pump body of the present invention;
Fig. 7 is the structural schematic diagram at another visual angles Fig. 6;
Fig. 8 is the sectional view after middle pump body of the present invention and rotor assembly;
Wherein:1-the pump housing;2-cover boards;3-rotors;4-blades;5-mounting holes;6-connecting keys;7-slots;8-oil sealings Block;9-air admission holes;10-oil-feed tanks;11-oil extraction stomatas;12-reversed outages;13-fuel feed holes;14-annular grooves;15— Fixing bolt;16-reeds;17-banking stops;18-inlet end mounting portions;19-oil extraction air drains;20-grooves;21-oil storages Slot;22-sealing rings.
Specific implementation mode
Below in conjunction with the accompanying drawings, invention is further described in detail.
As shown in Figures 1 to 8, the present invention provides a kind of automobile brake rotary-vane vaccum pumps, including surface to offer appearance Central area is deviateed in the pump housing 1 of chamber, the cover board 2 being connect with 1 removable seal of the pump housing, rotor 3 and blade 4,1 bottom of the pump housing It is provided in the axial direction with mounting hole 5, the rotor 3 is detachably fixed with connecting key 6 after mounting hole 5 and connect, and the blade 4 is inserted In the slot 7 of rotor 3, and 4 liang of outsides of blade are provided with locating slot, hold with the pump housing 1 after oil sealing block 8 is mounted in locating slot Intracavitary side contacts, and pump housing vessel is separated into inlet chamber and discharge chamber, the driving band that the rotor 3 passes through connecting key 6 by blade The dynamic rotary motion in the vessel of the pump housing 1 of blade 4, blade 4 slide along 7 length direction of slot and oil sealing block 8 are begun simultaneously It is contacted eventually with 1 vessel medial surface of the pump housing, air admission hole 9 is offered on 1 vessel side wall of the pump housing, 1 vessel bottom surface of the pump housing is opened Equipped with oil-feed tank 10, oil extraction stomata 11 and the reversed outage 12 at air admission hole 9, the air admission hole 9 prolongs to 1 outside of the pump housing Inlet end mounting portion 18 is stretched out, check valve assembly is provided in the air admission hole 9 in the inlet end mounting portion 18;The pump housing 1 The cross sectional shape of vessel is closed curved shape, and arbitrary two pass through the line segment intersected with the cross sectional boundary at 5 center of mounting hole Length having the same, 3 outer surface of the rotor are in contact with 1 vessel side of the pump housing, and contact point is located at air admission hole 9 and reversed The rear of outage 12, contact point is at reversed outage 12;3 end face center of the rotor opens up fluted 20, slot 7 with Groove 20 joins, and 2 inner surface of the cover board is provided with oil storage tank 21, and the oil storage tank 21 is in contact with 3 top surface of rotor, rotor It is lubricated in the gap that lubricating oil when 3 rotation in oil storage tank 21 enters between blade 4 and slot 7;The oil extraction stomata 11 1 bottom surface of the pump housing is penetrated through with reversed outage 12, the oil-feed tank 10 is connected with mounting hole 5 and along 5 side wall of mounting hole along axis To extending downwardly, 5 side wall of the mounting hole is provided with fuel feed hole 13, and 3 outer surface of the rotor corresponds to fuel feed hole 13 and oil-feed tank 10 sections are provided with annular groove 14, and fuel feed hole 13 is connected with oil-feed tank 10 by annular groove 14, and 13 other end of the fuel feed hole is located at On the outside of 1 back side of the pump housing, 1 vessel bottom of the pump housing is provided with oil extraction air drain 19, the oil extraction air drain 19 and 11 phase of oil extraction stomata Connection;1 back side of the pump housing is connected with reed 16 and banking stop 17 by fixing bolt 15, and the reed 16 covers oil extraction gas Hole 11 and reversed outage 12, the banking stop 17 corresponds to be inclined outwardly and and reed at oil extraction stomata 11 and reversed outage 12 16 have gap;1 top surface of the pump housing is provided with annular groove, sealing ring 22 is equipped in annular groove, after cover board 2 is threadedly coupled with the pump housing 1 It is sealed by sealing ring 22.
When work, connecting key 6 and cam axis connection, when automobile advances, camshaft rotates forward, and drives rotor 3 to rotate forward, blade 4 It rotating forward, the inlet chamber volume at air admission hole 9 gradually increases, and carries out breathing process, while the volume at discharge chamber is gradually reduced, into Contacting points position is passed through in row exhaust process, rotation, and a upper exhaust chamber area can become new air inlet cavity region, and upper one into Air cavity regions then become new exhaust chamber area, the function of completion air-breathing exhaust when rotor 3 drives blade 4 to rotate forward, while into Enter lubricating oil at oilhole 13, lubricating oil enters after the annular groove 14 of rotor at oil-feed tank 10, and then enters rotor 3, rotation The process of lubrication is realized on piece 4, oil sealing block 8 and 1 vessel surface of the pump housing, between 1 vessel surface of oil sealing block 8 and the pump housing, 4 and of blade Oil film is formed between rotor 3, forms oil seal while reducing abrasion, and is finally passed through at oil extraction stomata 11 and gone out reed 16 1 outside of the covering discharge pump housing, realizes the function of vacuum pumping pump, whole process air-breathing exhaust efficiency is high, and speed is fast.Work as back of automobile When, camshaft reversion, rotor 3 drives blade 4 to invert, and the check valve assembly in inlet end mounting portion 18 is automatically closed at this time, pump Extra oil in body 1 is discharged by reversed outage 12.
The above, be only the present invention better embodiment, not to invention make any form of restriction, it is every according to According to the technical principle of the present invention any simple modification, equivalent variations or modification made to the above embodiment, the present invention is still fallen within In the range of technical solution.

Claims (8)

1. a kind of automobile brake rotary-vane vaccum pump, including surface offer the pump housing of vessel(1)With the pump housing(1)It is detachable close Seal the cover board of connection(2), rotor(3)And blade(4), the pump housing(1)Deviate central area and be provided in the axial direction with installation in bottom Hole(5), the rotor(3)Across mounting hole(5)Afterwards with connecting key(6)It is detachably fixed connection, it is characterised in that:The blade (4)It is inserted into rotor(3)Slot(7)It is interior, and blade(4)Two outsides are provided with locating slot, oil sealing block(8)Mounted on locating slot The interior rear and pump housing(1)Vessel medial surface contacts, the rotor(3)Pass through connecting key(6)Driving drive blade(4)In the pump housing (1)Vessel in rotary motion, blade(4)Simultaneously along slot(7)Length direction slides and makes oil sealing block(8)Always with pump Body(1)Vessel medial surface contacts;The pump housing(1)Air admission hole is offered on vessel side wall(9), the pump housing(1)Vessel bottom surface Offer oil-feed tank(10), oil extraction stomata(11)With close air admission hole(9)The reversed outage at place(12), the oil extraction stomata (11)With reversed outage(12)Penetrate through the pump housing(1)Bottom surface, the oil-feed tank(10)With mounting hole(5)It is connected and along installation Hole(5)Side wall extends axially downward, the mounting hole(5)Side wall is provided with fuel feed hole(13), the rotor(3)Outer surface pair Answer fuel feed hole(13)And oil-feed tank(10)Section is provided with annular groove(14), fuel feed hole(13)And oil-feed tank(10)Pass through annular groove(14) It is connected, the fuel feed hole(13)The other end is located at the pump housing(1)On the outside of the back side;The pump housing(1)The back side passes through fixing bolt (15)It is connected with reed(16)And banking stop(17), the reed(16)Cover oil extraction stomata(11)With reversed outage (12), the banking stop(17)Corresponding oil extraction stomata(11)With reversed outage(12)Place is inclined outwardly and and reed(16)Between having Gap.
2. automobile brake rotary-vane vaccum pump according to claim 1, it is characterised in that:The pump housing(1)Vessel is cut Face shape is closed curved shape, and arbitrary two pass through mounting hole(5)The line segment intersected with the cross sectional boundary at center has phase Same length.
3. automobile brake rotary-vane vaccum pump according to claim 2, it is characterised in that:The rotor(3)Outer surface with The pump housing(1)Vessel side is in contact, and contact point is located at air admission hole(9)With reversed outage(12)Rear, contact point is close Reversed outage(12)Place.
4. automobile brake rotary-vane vaccum pump according to claim 1, it is characterised in that:The air admission hole(9)To the pump housing (1)Extend inlet end mounting portion in outside(18), the inlet end mounting portion(18)Interior air admission hole(9)In be provided with check valve Component.
5. automobile brake rotary-vane vaccum pump according to claim 1, it is characterised in that:The pump housing(1)Vessel bottom It is provided with oil extraction air drain(19), the oil extraction air drain(19)With oil extraction stomata(11)It is connected.
6. automobile brake rotary-vane vaccum pump according to claim 1, it is characterised in that:The rotor(3)End face center It opens up fluted(20), slot(7)With groove(20)Handing-over.
7. automobile brake rotary-vane vaccum pump according to claim 6, it is characterised in that:The cover board(2)Inner surface It is provided with oil storage tank(21), the oil storage tank(21)With rotor(3)Top surface is in contact, rotor(3)Oil storage tank when rotation(21)In Lubricating oil enter blade(4)With slot(7)Between gap in be lubricated.
8. automobile brake rotary-vane vaccum pump according to claim 1, it is characterised in that:The pump housing(1)Top surface is arranged There is annular groove, sealing ring is installed in annular groove(22), cover board(2)With the pump housing(1)Pass through sealing ring after threaded connection(22)Sealing.
CN201810263101.6A 2018-03-28 2018-03-28 Automobile brake rotary vane vacuum pump Active CN108506211B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810263101.6A CN108506211B (en) 2018-03-28 2018-03-28 Automobile brake rotary vane vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810263101.6A CN108506211B (en) 2018-03-28 2018-03-28 Automobile brake rotary vane vacuum pump

Publications (2)

Publication Number Publication Date
CN108506211A true CN108506211A (en) 2018-09-07
CN108506211B CN108506211B (en) 2023-12-29

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CN201810263101.6A Active CN108506211B (en) 2018-03-28 2018-03-28 Automobile brake rotary vane vacuum pump

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103850937A (en) * 2012-11-30 2014-06-11 上海世传金属材料研发中心 Vacuum device for assisting vehicle braking system
CN203847388U (en) * 2014-02-28 2014-09-24 东莞市雅之雷德机电科技有限公司 Rotary vane vacuum pump
WO2017107228A1 (en) * 2015-12-25 2017-06-29 常州市金坛翰广科技有限公司 Rotary-vane vacuum pump
CN208057406U (en) * 2018-03-28 2018-11-06 浙江大行科技有限公司 Automobile brake rotary-vane vaccum pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103850937A (en) * 2012-11-30 2014-06-11 上海世传金属材料研发中心 Vacuum device for assisting vehicle braking system
CN203847388U (en) * 2014-02-28 2014-09-24 东莞市雅之雷德机电科技有限公司 Rotary vane vacuum pump
WO2017107228A1 (en) * 2015-12-25 2017-06-29 常州市金坛翰广科技有限公司 Rotary-vane vacuum pump
CN208057406U (en) * 2018-03-28 2018-11-06 浙江大行科技有限公司 Automobile brake rotary-vane vaccum pump

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