CN106089662A - The piston component of diaphragm type electric vacuum pump for automobile - Google Patents
The piston component of diaphragm type electric vacuum pump for automobile Download PDFInfo
- Publication number
- CN106089662A CN106089662A CN201610489089.1A CN201610489089A CN106089662A CN 106089662 A CN106089662 A CN 106089662A CN 201610489089 A CN201610489089 A CN 201610489089A CN 106089662 A CN106089662 A CN 106089662A
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- CN
- China
- Prior art keywords
- diaphragm
- piston component
- automobile
- pump housing
- type electric
- 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
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention belongs to automobile brake force aid system field, particularly relate to the piston component of a kind of diaphragm type electric vacuum pump for automobile.The invention discloses the piston component of diaphragm type electric vacuum pump for automobile, including the pump housing, the pump housing offers entering and exhaust channel, be symmetrically arranged with piston component at the two ends, left and right of the entering and exhaust channel of the pump housing, bearing is connected with the mandrel of band eccentric orfice；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 invention has the beneficial effects as follows: simple in construction, assembling is reliable, and working performance is high, and processing is easier to implement.
Description
Technical field
The invention belongs to automobile brake force aid system field, particularly relate to the work of a kind of diaphragm type electric vacuum pump for automobile
Plug assembly.
Background technology
Along with the minimizing of non-renewable resources, Abgasgesetz increasingly stringent, energy-saving and emission-reduction, protection environment is society
Urgent needs.The development of new-energy automobile will be the Main way solving discharge, the conventional truck gas handling system by electromotor
Reach the vacuum level requirements of vacuum booster, and new-energy automobile lacks vacuum without electromotor, braking automobile vacuum booster
Power source, brakes cisco unity malfunction.It is therefore desirable to one is independent of engine power, and the dress of vacuum source can be provided in good time
Put.Existing electric vacuum pump there is problems in that 1. safety coefficients are low, once a damage parts, 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, and impact uses the longevity
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；4, noise is big, due to part high speed rotating or reciprocating motion under eccentric stiffener drives, phase between part
Mutual friction and impact, noise is bigger.Currently also there is a kind of vacuum pump that can solve the problems referred to above, but this type of vacuum pump
Former diaphragm structure, by being directly embedded into inside diaphragm by piston rod, when assembling, needs to carry out piston component at pump body
, there is piston component location difficulty, and enclosed shape intracavity cannot be carried out observing, and there is working performance low, press-fits location in assembling
Unreliable, the defects such as percent defective is high.
Summary of the invention
It is an object of the invention to solve techniques discussed above problem, it is provided that a kind of simple in construction, assembling is reliable, operation
Efficiency is high, and processing is easier to the piston component of the diaphragm type electric vacuum pump for automobile implemented, and its technical scheme is as follows:
The piston component of diaphragm type electric vacuum pump for automobile, including the pump housing, it is characterised in that offer on the described pump housing into
Exhaust duct, 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 by diaphragm, metal insert and
Piston rod forms, and the outer ring of diaphragm is pressed on the pump housing, is pressed with bearing in one end of piston rod, and it is eccentric that bearing has been connected with band
The mandrel in hole；Under the pulling of piston rod, carry out elastic deformation inside diaphragm move, when turning at stop, the shape within diaphragm
During the maximum of chamber, being in the state of bleeding, the shape chamber within diaphragm is negative pressure, produces suction, and opposed pistons assembly is in shape chamber and holds
Long-pending minimum, is exhaust condition.
Optimal way is, described diaphragm uses vulcanization and metal insert to synthesize one.Piston component is tied
Structure is simple, and 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, energy
Realize equipment automatization assembly technology to produce, the function that assembling beat is fast.
The piston component of the diaphragm type electric vacuum pump for automobile that the present invention provides, piston component is that both sides are opposed, side
Piston component bleed, opposite side piston component is exhausted simultaneously, take out (row) strength obtain asymmetric cylinder compensate, mental retardation
Consumption, runs balance, vibrates low, and twin-tub works, and rate of air sucked in required is big.If wherein a piston component breaks down, do not affect whole system
The normal work of system.
The invention has the beneficial effects as follows: simple in construction, assembling is reliable, and working performance is high, and processing is easier to implement.
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 schematic diagram of the present invention；
Fig. 5 is the cut-away view of the present invention；
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 motor 1, the pump housing 4, left and right end-cap assembly 2, piston component 3, band eccentric orfice
The outlet port cap assemblies 7 of mandrel 5, the balance weight 6 coordinated with mandrel 5, band check valve and sound-absorbing sponge.Left and right end-cap assembly 2
Internal shape chamber is divided into suction muffler 24 and discharge chamber 25, and the pump housing 4 is provided with entering and exhaust channel 41, is respectively communicated with the air-breathing of left and right end-cap assembly
Chamber 24, discharge chamber 25, side plate 23 be provided with two groups of holes 26,27 respectively with suction muffler 24, discharge chamber 25 communicates, and check valve 22 exists respectively
Control the unidirectional gas flow of suction and discharge；2 symmetrically arranged piston components 3 are combined metal insert by diaphragm 31 with vulcanization
32, in metallic piston bar 34, it is pressed with bearing 33, then is connected by mandrel 5, mandrel 5 is that interference is joined with the output shaft of motor 1
Closing, 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 is pacified with the pump housing 4
Dress face is provided with sealing gasket 71 and carries out waterproof, and end cap 72 and guard shield 75 form first-level buffer chamber 77 and level 2 buffering chamber 78, in one-level
Being provided with end cap check valve 73 in cushion chamber, level 2 buffering intracavity has sound-absorbing sponge 74, and gas is by the entering and exhaust channel 41 of the pump housing 4 again
It is discharged into outside product by steam vent 76.
This product work principle: motor 1 output shaft drives mandrel 5 to carry out eccentric rotary, and then drives piston rod 34 around electricity
Machine 1 center carries out circumference and moves, and it is consistent with motor output shaft that balance weight 6 guarantees to rotate center of gravity, reaches steadily to operate.Outside diaphragm 31
Circle is pressed on the pump housing 4 by side plate 23, and diaphragm 31 inside carries out elastic deformation under the pulling of piston rod 34 and moves, when turning to
At stop, when the shape chamber 35 within diaphragm 31 is maximum, being in the state of bleeding, shape chamber 35 is internal is negative pressure, produces suction, and opposed
It is minimum that piston component is in shape chamber volume, 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, single
Closing to valve 22, discharge chamber 25 and hole 27 are in blocking state；Being under exhaust condition, check valve 22 is opened, and discharge chamber 25 passes through
Hole 27 communicates with the shape chamber 35 within diaphragm 31, and check valve 22 is closed, and suction muffler and hole 26 are in blocking state.Suction muffler 24 passes through
The pump housing 4 air flue communicates with force aid system for braking vacuum tank, and discharge chamber 25 enters into pump body by entering and exhaust channel 41.At air pressure
Bottom end cover check valve 73 is opened, 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, finally it is discharged into the external world.End cap check valve 73 prevents extraneous water simultaneously
Enter in pump.
The upper end of described mandrel 5 offers lower seam 51, and balance weight 6 offers seam 61, and balance weight press-fits
Time on mandrel, upper seam and lower seam coupling combine.
Being provided with round-corner transition groove 42 on the described pump housing 4, side plate compresses the outer ring of diaphragm on the pump housing, diaphragm interior
It is low friction trace movement with groove that circle 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 normal use reliably service life
Under, car load travels more than 220,000 kilometers fault-free.
Metal insert uses die casting aluminum component blank, then by machining turning end and brill endoporus, tapping, it is ensured that end
Surface evenness；Rubber diaphragm uses vulcanization and metal insert to synthesize one, with the processing end face of metal insert during sulfuration
As positioning step, the contour structure size of diaphragm synthetic parts is by completely the same；Piston rod obtains blank by die casting mode, then
By machining turning dead eye and connection screw thread, Set and Positioning is reliable, and dimensional accuracy can ensure.
Claims (3)
1. the piston component of diaphragm type electric vacuum pump for automobile, including the pump housing, it is characterised in that offer on the described pump housing
Entering and exhaust channel, is symmetrically arranged with piston component at the two ends, left and right of the entering and exhaust channel of the pump housing, and piston component is by diaphragm, metal insert
Forming with piston rod, the outer ring of diaphragm is pressed on the pump housing, is pressed with bearing in one end of piston rod, and bearing has been connected with band partially
The mandrel of central hole；Under the pulling of piston rod, carry out elastic deformation inside diaphragm move, when turning at stop, within diaphragm
During the maximum of shape chamber, 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 is minimum, is exhaust condition.
2. the piston component of diaphragm type electric vacuum pump for automobile as claimed in claim 1, it is characterised in that described diaphragm
Vulcanization and metal insert is used to synthesize one.
3. the piston component of diaphragm type electric vacuum pump for automobile as claimed in claim 1, it is characterised in that described diaphragm
For rubber diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489089.1A CN106089662A (en) | 2016-06-29 | 2016-06-29 | The piston component of diaphragm type electric vacuum pump for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489089.1A CN106089662A (en) | 2016-06-29 | 2016-06-29 | The piston component of diaphragm type electric vacuum pump for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106089662A true CN106089662A (en) | 2016-11-09 |
Family
ID=57215043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610489089.1A Pending CN106089662A (en) | 2016-06-29 | 2016-06-29 | The piston component of diaphragm type electric vacuum pump for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106089662A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1101941A2 (en) * | 1999-11-20 | 2001-05-23 | ABEL GmbH & Co. KG | Hydraulically driven membrane pump |
| 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 |
| US20110229352A1 (en) * | 2007-08-23 | 2011-09-22 | Herbert Timmer | High Pressure Double Membrane Pump and Membrane Element for Such a 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 |
| CN205744378U (en) * | 2016-06-29 | 2016-11-30 | 湖州安瑞能液压气动科技有限公司 | The piston component of diaphragm type electric vacuum pump for automobile |
-
2016
- 2016-06-29 CN CN201610489089.1A patent/CN106089662A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1101941A2 (en) * | 1999-11-20 | 2001-05-23 | ABEL GmbH & Co. KG | Hydraulically driven membrane pump |
| US20110229352A1 (en) * | 2007-08-23 | 2011-09-22 | Herbert Timmer | High Pressure Double Membrane Pump and Membrane Element for Such a Pump |
| 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 |
| 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 |
| CN205744378U (en) * | 2016-06-29 | 2016-11-30 | 湖州安瑞能液压气动科技有限公司 | The piston component of diaphragm type electric vacuum pump for automobile |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |