CN105971861A - Running mechanism of electric vacuum pump for diaphragm type automobile - Google Patents
Running mechanism of electric vacuum pump for diaphragm type automobile Download PDFInfo
- Publication number
- CN105971861A CN105971861A CN201610489111.2A CN201610489111A CN105971861A CN 105971861 A CN105971861 A CN 105971861A CN 201610489111 A CN201610489111 A CN 201610489111A CN 105971861 A CN105971861 A CN 105971861A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- mandrel
- electric vacuum
- vacuum pump
- pump housing
- 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.)
- Pending
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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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/043—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms two or more plate-like pumping flexible members in parallel
Abstract
The invention belongs to the field of automobile brake boosting systems, and particularly relates to a running mechanism of an electric vacuum pump for a diaphragm type automobile. The running mechanism of the electric vacuum pump for the diaphragm type automobile comprises a motor and a pump body, and an air inflow and exhaust channel is formed in the pump body; piston assemblies are symmetrically arranged at the positions of the left end and the right end of the air inflow and exhaust channel of the pump body, suction force is generated, and the oppositely-arranged piston assemblies are in an air exhaust state when the cavity volume is minimum; and a balance block matched with a mandrel is arranged on the pump body. The running mechanism of the electric vacuum pump for the diaphragm type automobile has the beneficial effects that the air exhaust performance is better, the safety coefficient is higher, the service life is longer, and the accumulative work time can reach 1200 h or above.
Description
Technical field
The invention belongs to automobile brake force aid system field, particularly relate to the travelling mechanism of a kind of diaphragm type electric vacuum pump for automobile.
Background technology
Along with the minimizing of non-renewable resources, Abgasgesetz increasingly stringent, energy-saving and emission-reduction, protection environment is the urgent needs of society.The development of new-energy automobile will be the Main way solving discharge, conventional truck reaches the vacuum level requirements of vacuum booster by the gas handling system of electromotor, and new-energy automobile is without electromotor, braking automobile vacuum booster lacks vacuum power source, brakes cisco unity malfunction.It is therefore desirable to one is independent of engine power, and the device of vacuum source can be provided in good time.Existing electric vacuum pump there is problems in that 1. safety coefficients are low, once a damage parts, and whole force aid system for braking lost efficacy；2. temperature rise, owing to inner body is dry friction, in the case of running up, temperature raises very fast, affects service life；3. poor sealing performance, it is contemplated that the graphite powder after dry friction discharges the pump housing, gas outlet must be towards little, without waterproof measure, to being provided with strict demand.
Summary of the invention
It is an object of the invention to solve techniques discussed above problem, thering is provided a kind of pumping performance more preferable, safety coefficient is higher, and service life is longer, cumulative operation time can reach the travelling mechanism of the diaphragm type electric vacuum pump for automobile of more than 1200 hours, and its technical scheme is as follows:
The travelling mechanism of diaphragm type electric vacuum pump for automobile, including motor and the pump housing, it is characterised in that offer entering and exhaust channel on the described pump housing；It is symmetrically arranged with piston component at the two ends, left and right of the entering and exhaust channel of the pump housing, piston component is made up of diaphragm, metal insert and piston rod, the outer ring of diaphragm is pressed on the pump housing, it is pressed with bearing in one end of piston rod, bearing is connected with the mandrel of band eccentric orfice, mandrel is interference fit with the output shaft of motor, and mandrel is eccentric rotary under the driving of motor, drives piston component to move back and forth；Under the pulling of piston rod, carry out elastic deformation inside diaphragm move, when turning at stop, during shape chamber maximum within diaphragm, being in the state of bleeding, the shape chamber within diaphragm is negative pressure, produces suction, and opposed pistons assembly is in shape chamber volume minimum, it it is exhaust condition；The balance weight coordinated with mandrel it is provided with on the pump housing.
Optimal way is, described diaphragm uses vulcanization and metal insert to synthesize one.Making piston assembly structure simple, assembling is reliable, and working performance is high, and processing is easier to implement, and machining accuracy is high, and production efficiency is fast, and quality level is high, can realize equipment automatization assembly technology and produce, the function that assembling beat is fast.
Optimal way is, the upper end of described mandrel offers lower seam, and balance weight offers seam, and when balance weight is fitted on mandrel, upper seam and lower seam coupling combine.Making the assembly precision between mandrel and balance weight high, concordance is good, can realize quick assembling and error-disable function.
Optimal way is, the described pump housing is provided with round-corner transition groove, and the outer ring of side plate compression diaphragm is on the pump housing, and it is low friction trace movement with groove that the inner ring of diaphragm has part to be arranged at round-corner transition groove interior.Avoid the diaphragm root risk by shearing force, reduce the friction of diaphragm and groove and cut off stress, improve the service life of diaphragm.
The travelling mechanism of the diaphragm type electric vacuum pump for automobile that the present invention provides, piston component is that both sides are opposed, the piston component of side is bled, opposite side piston component is exhausted simultaneously, takes out (row) strength and obtains asymmetric cylinder compensation, low energy consumption, run balance, vibrating low, twin-tub works, and rate of air sucked in required is big.If wherein a piston component breaks down, do not affect the normal work of whole system.
Motor and mandrel carry out interference fit by spline wedge structure, and the mandrel other end press-fits balance weight, and piston component is rotated around electrical axis balance by mandrel, solves the dynamic equilibrium problems of piston component eccentric rotary；
Motor and pump housing faying face have O-ring seal, can effectively prevent dust, and rainwater enters interiors of products, and degree of protection reaches IP67.
Motor is connected with the VEU of automobile, when VEU monitors the insufficient pressure of vacuum tank, starts motor and carries out bleeding work, in making the negative pressure in vacuum tank remain the vacuum interval that middle force aid system requires.
The invention has the beneficial effects as follows: pumping performance is more preferable, and safety coefficient is higher, and service life is longer, and cumulative operation time can reach more than 1200 hours.
Accompanying drawing explanation
Fig. 1 is diaphragm type electric vacuum pump for automobile schematic diagram；
Fig. 2 is the cut-away view of diaphragm type electric vacuum pump for automobile；
Fig. 3 is left and right end-cap assembly schematic diagram；
Fig. 4 is piston component schematic diagram；
Fig. 5 is the cut-away view of piston component；
Fig. 6 is outlet port cap assemblies schematic diagram；
Fig. 7 is that mandrel assembles schematic diagram with balance weight；
Fig. 8 is the enlarged diagram of round-corner transition groove.
Detailed description of the invention
Below in conjunction with Fig. 1 to Fig. 8 specific illustrative embodiment:
Diaphragm type electric vacuum pump for automobile, including the outlet port cap assemblies 7 of motor 1, the pump housing 4, left and right end-cap assembly 2, piston component 3, the mandrel 5 of band eccentric orfice, the balance weight 6 coordinated with mandrel 5, band check valve and sound-absorbing sponge.The internal shape chamber of left and right end-cap assembly 2 is divided into suction muffler 24 and discharge chamber 25, the pump housing 4 is provided with entering and exhaust channel 41, it is respectively communicated with the suction muffler 24 of left and right end-cap assembly, discharge chamber 25, side plate 23 is provided with two groups of holes 26,27 respectively with suction muffler 24, discharge chamber 25 communicates, check valve 22 respectively control the unidirectional gas flow of suction and discharge；2 opposite disposed piston components 3 are combined metal insert 32 by diaphragm 31 with vulcanization, being pressed with bearing 33 in metallic piston bar 34, then connected by mandrel 5, mandrel 5 is interference fit with the output shaft of motor 1, mandrel 5 is eccentric rotary under the driving of motor 1, and band piston component 3 moves back and forth；Outlet port cap assemblies 7 and the pump housing 4 installed surface are provided with sealing gasket 71 and carry out waterproof, end cap 72 and guard shield 75 form first-level buffer chamber 77 and level 2 buffering chamber 78, it is provided with end cap check valve 73 at first-level buffer intracavity, level 2 buffering intracavity has sound-absorbing sponge 74, and gas is discharged into outside product by steam vent 76 by the entering and exhaust channel 41 of the pump housing 4 again.
This product work principle: motor 1 output shaft drives mandrel 5 to carry out eccentric rotary, and then drive piston rod 34 carries out circumference around motor 1 center and moves, and it is consistent with motor output shaft that balance weight 6 guarantees to rotate center of gravity, reaches steadily to operate.Diaphragm 31 outer ring is pressed on the pump housing 4 by side plate 23, diaphragm 31 inside carries out elastic deformation under the pulling of piston rod 34 and moves, when turning at stop, when the shape chamber 35 within diaphragm 31 is maximum, it is in the state of bleeding, shape chamber 35 is internal is negative pressure, produces suction, and opposed pistons assembly is in shape chamber volume minimum, it it is exhaust condition, shape intracavity no pressure, takes out (row) strength and obtains asymmetric cylinder compensation, low energy consumption.Being under the state of bleeding, check valve 22 is opened, and suction muffler 24 is communicated with the shape chamber 35 within diaphragm 31 by hole 26, and check valve 22 is closed, and discharge chamber 25 and hole 27 are in blocking state；Being under exhaust condition, check valve 22 is opened, and discharge chamber 25 is communicated with the shape chamber 35 within diaphragm 31 by hole 27, and check valve 22 is closed, and suction muffler and hole 26 are in blocking state.Suction muffler 24 is communicated with force aid system for braking vacuum tank by the pump housing 4 air flue, and discharge chamber 25 enters into pump body by entering and exhaust channel 41.End cap check valve 73 is opened under pneumatic pressure, and gas is discharged into the first-level buffer intracavity of end cap 72 and guard shield 75 composition by steam vent 76, then after being absorbed by the sound-absorbing sponge 74 of level 2 buffering intracavity, is finally discharged into the external world.End cap check valve 73 prevents extraneous water from entering in pump simultaneously.
The upper end of described mandrel 5 offers lower seam 51, and balance weight 6 offers seam 61, and when balance weight is fitted on mandrel, upper seam and lower seam coupling combine.
Being provided with round-corner transition groove 42 on the described pump housing 4, the outer ring of side plate compression diaphragm is on the pump housing, and it is low friction trace movement with groove that the inner ring of diaphragm has part to be arranged at round-corner transition groove interior.
The each fitting surface of this product is equipped with sealing member, it is ensured that sealing reliably, reaches degree of protection IP67；Due to opposed layout diaphragm, running balance, noise is low, without friction, the characteristic that the speed of exhaust is fast.Can ensure that under normal use, car load travels more than 220,000 kilometers fault-free reliably service life.
Claims (4)
1. the travelling mechanism of diaphragm type electric vacuum pump for automobile, including motor and the pump housing, it is characterised in that offer entering and exhaust channel on the described pump housing；It is symmetrically arranged with piston component at the two ends, left and right of the entering and exhaust channel of the pump housing, piston component is made up of diaphragm, metal insert and piston rod, the outer ring of diaphragm is pressed on the pump housing, it is pressed with bearing in one end of piston rod, bearing is connected with the mandrel of band eccentric orfice, mandrel is interference fit with the output shaft of motor, and mandrel is eccentric rotary under the driving of motor, drives piston component to move back and forth；Under the pulling of piston rod, carry out elastic deformation inside diaphragm move, when turning at stop, during shape chamber maximum within diaphragm, being in the state of bleeding, the shape chamber within diaphragm is negative pressure, produces suction, and opposed pistons assembly is in shape chamber volume minimum, it it is exhaust condition；The balance weight coordinated with mandrel it is provided with on the pump housing.
2. the travelling mechanism of diaphragm type electric vacuum pump for automobile as claimed in claim 1, it is characterised in that described diaphragm uses vulcanization and metal insert to synthesize one.
3. the travelling mechanism of diaphragm type electric vacuum pump for automobile as claimed in claim 1, it is characterised in that the upper end of described mandrel offers lower seam, and balance weight offers seam, when balance weight is fitted on mandrel, upper seam and lower seam coupling combine.
4. the travelling mechanism of diaphragm type electric vacuum pump for automobile as claimed in claim 1, it is characterised in that be provided with round-corner transition groove on the described pump housing, it is low friction trace movement with groove that the inner ring of diaphragm has part to be arranged at round-corner transition groove interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489111.2A CN105971861A (en) | 2016-06-29 | 2016-06-29 | Running mechanism of electric vacuum pump for diaphragm type automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489111.2A CN105971861A (en) | 2016-06-29 | 2016-06-29 | Running mechanism of electric vacuum pump for diaphragm type automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971861A true CN105971861A (en) | 2016-09-28 |
Family
ID=57019423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610489111.2A Pending CN105971861A (en) | 2016-06-29 | 2016-06-29 | Running mechanism of electric vacuum pump for diaphragm type automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971861A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035670A (en) * | 2017-05-31 | 2017-08-11 | 瑞立集团瑞安汽车零部件有限公司 | A kind of Vehicular electric diaphragm vavuum pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839234A (en) * | 2010-04-23 | 2010-09-22 | 宁波拓普制动系统有限公司 | Vehicle dual-diaphragm electronic vacuum pump |
| CN201721438U (en) * | 2010-06-25 | 2011-01-26 | 宁波拓普制动系统有限公司 | Electronic vacuum pump |
| CN103470828A (en) * | 2013-08-22 | 2013-12-25 | 河南航天液压气动技术有限公司 | Diaphragm and diaphragm seal type safety valve using same |
| CN203717301U (en) * | 2014-02-24 | 2014-07-16 | 荆州久阳汽车零部件制造有限公司 | Electronic direct-current vacuum pump of automotive braking system |
| CN104995407A (en) * | 2012-11-15 | 2015-10-21 | 迈瑞医疗（瑞典）公司 | Extended elasticity of pump membrane with conserved pump force |
| CN206158971U (en) * | 2016-06-29 | 2017-05-10 | 湖州安瑞能液压气动科技有限公司 | Diaphragm formula electric vacuum pump's for car running gear |
-
2016
- 2016-06-29 CN CN201610489111.2A patent/CN105971861A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839234A (en) * | 2010-04-23 | 2010-09-22 | 宁波拓普制动系统有限公司 | Vehicle dual-diaphragm electronic vacuum pump |
| CN201721438U (en) * | 2010-06-25 | 2011-01-26 | 宁波拓普制动系统有限公司 | Electronic vacuum pump |
| CN104995407A (en) * | 2012-11-15 | 2015-10-21 | 迈瑞医疗（瑞典）公司 | Extended elasticity of pump membrane with conserved pump force |
| CN103470828A (en) * | 2013-08-22 | 2013-12-25 | 河南航天液压气动技术有限公司 | Diaphragm and diaphragm seal type safety valve using same |
| CN203717301U (en) * | 2014-02-24 | 2014-07-16 | 荆州久阳汽车零部件制造有限公司 | Electronic direct-current vacuum pump of automotive braking system |
| CN206158971U (en) * | 2016-06-29 | 2017-05-10 | 湖州安瑞能液压气动科技有限公司 | Diaphragm formula electric vacuum pump's for car running gear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035670A (en) * | 2017-05-31 | 2017-08-11 | 瑞立集团瑞安汽车零部件有限公司 | A kind of Vehicular electric diaphragm vavuum pump |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |
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| RJ01 | Rejection of invention patent application after publication |