CN105952624A - Air outlet end cover assembly of electric vacuum pump for diaphragm type automobile - Google Patents
Air outlet end cover assembly of electric vacuum pump for diaphragm type automobile Download PDFInfo
- Publication number
- CN105952624A CN105952624A CN201610488820.9A CN201610488820A CN105952624A CN 105952624 A CN105952624 A CN 105952624A CN 201610488820 A CN201610488820 A CN 201610488820A CN 105952624 A CN105952624 A CN 105952624A
- Authority
- CN
- China
- Prior art keywords
- end cover
- air outlet
- outlet end
- cover assembly
- electric vacuum
- 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
Links
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
- 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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/125—Cylinder heads
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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
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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
- F04B39/0022—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 piston rods
-
- 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
- F04B39/0027—Pulsation and noise damping means
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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
- F04B39/0027—Pulsation and noise damping means
- F04B39/005—Pulsation and noise damping means with direct action on the fluid flow using absorptive materials
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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
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention belongs to the field of automobile brake hydraulic boosting systems, and particularly relates to an air outlet end cover assembly of an electric vacuum pump for a diaphragm type automobile. The air outlet end cover assembly of the electric vacuum pump for the diaphragm type automobile comprises a pump body, an air inlet and exhaust way is formed on the pump body, the air outlet end cover assembly is arranged on the upper portion of the pump body, a sealing pad is arranged on the mounting face of the air outlet end cover assembly and the pump body for water prevention, and the air outlet end cover assembly comprises an end cover and a protection cover; a first-stage buffer cavity and a second-stage buffer cavity are formed by the end cover and the protection cover, the first-stage buffer cavity is located in the second-stage buffer cavity, an end cover one-way valve is arranged in the first-stage buffer cavity, a sound-absorbing sponge is arranged in the second-stage buffer cavity, and gas passes through the air inlet and exhaust way of the pump body and then is exhausted through an air exhaust hole; and the air outlet end cover assembly has the beneficial effects of being lower in noise, higher in safety coefficient and better in sealing effect.
Description
Technical field
The invention belongs to automobile brake force aid system field, particularly relate to the outlet port cap assemblies 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. poor sealing performances, 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；2, noise is big, and due to part high speed rotating or reciprocating motion under eccentric stiffener drives, phase mutual friction and impact between part, noise is bigger.
Summary of the invention
It is an object of the invention to solve techniques discussed above problem, it is provided that a kind of noise is less, and safety coefficient is higher, the outlet port cap assemblies of sealing effectiveness more preferable diaphragm type electric vacuum pump for automobile, and its technical scheme is as follows:
The outlet port cap assemblies of diaphragm type electric vacuum pump for automobile, including the pump housing, it is characterized in that, entering and exhaust channel is offered on the described pump housing, outlet port cap assemblies it is provided with at the top of the pump housing, outlet port cap assemblies and the installed surface of the pump housing are provided with sealing gasket and carry out waterproof, outlet port cap assemblies includes end cap and guard shield, end cap forms first-level buffer chamber and level 2 buffering chamber with guard shield, first-level buffer chamber is positioned at level 2 buffering intracavity portion, it is provided with end cap check valve at first-level buffer intracavity, level 2 buffering intracavity has sound-absorbing sponge, gas is discharged by steam vent by the entering and exhaust channel of the pump housing again.
Optimal way is, described sound-absorbing sponge is noise reduction PU sponge.
The outlet port cap assemblies of the diaphragm type electric vacuum pump for automobile that the present invention provides, the aerofluxus entering and exhaust channel by the pump housing, discharge through outlet side cap assemblies, be provided with check valve in the cap assemblies of outlet side, prevent water from carrying out pump body；
Outlet port cap assemblies, cover plate forms first-level buffer chamber and level 2 buffering chamber, is filled with sound-absorbing sponge at level 2 buffering intracavity；So that noise is less.
Left and right end-cap assembly and pump housing installed surface are provided with O-ring seal, are provided with sealing gasket between outlet port cap assemblies and the pump housing, can effectively prevent dust, and rainwater enters interiors of products, and degree of protection reaches IP67.
The invention has the beneficial effects as follows: noise is less, safety coefficient is higher, and sealing effectiveness is more preferable.
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 schematic diagram of the present invention；
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 symmetrically arranged 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 (2)
1. the outlet port cap assemblies of diaphragm type electric vacuum pump for automobile, including the pump housing, it is characterized in that, entering and exhaust channel is offered on the described pump housing, outlet port cap assemblies it is provided with at the top of the pump housing, outlet port cap assemblies and the installed surface of the pump housing are provided with sealing gasket and carry out waterproof, outlet port cap assemblies includes end cap and guard shield, end cap forms first-level buffer chamber and level 2 buffering chamber with guard shield, first-level buffer chamber is positioned at level 2 buffering intracavity portion, it is provided with end cap check valve at first-level buffer intracavity, level 2 buffering intracavity has sound-absorbing sponge, gas is discharged by steam vent by the entering and exhaust channel of the pump housing again.
2. the outlet port cap assemblies of diaphragm type electric vacuum pump for automobile as claimed in claim 1, it is characterised in that described sound-absorbing sponge is noise reduction PU sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488820.9A CN105952624A (en) | 2016-06-29 | 2016-06-29 | Air outlet end cover assembly of electric vacuum pump for diaphragm type automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488820.9A CN105952624A (en) | 2016-06-29 | 2016-06-29 | Air outlet end cover assembly of electric vacuum pump for diaphragm type automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105952624A true CN105952624A (en) | 2016-09-21 |
Family
ID=56901782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610488820.9A Pending CN105952624A (en) | 2016-06-29 | 2016-06-29 | Air outlet end cover assembly of electric vacuum pump for diaphragm type automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105952624A (en) |
Cited By (2)
| 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 |
| CN110671300A (en) * | 2019-09-23 | 2020-01-10 | 广东民飞机电有限责任公司 | Gas compression pump |
Citations (5)
| 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 |
| CN205744369U (en) * | 2016-06-29 | 2016-11-30 | 湖州安瑞能液压气动科技有限公司 | The outlet port cap assemblies of diaphragm type electric vacuum pump for automobile |
-
2016
- 2016-06-29 CN CN201610488820.9A patent/CN105952624A/en active Pending
Patent Citations (5)
| 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 |
| CN205744369U (en) * | 2016-06-29 | 2016-11-30 | 湖州安瑞能液压气动科技有限公司 | The outlet port cap assemblies of diaphragm type electric vacuum pump for automobile |
Cited By (3)
| 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 |
| CN110671300A (en) * | 2019-09-23 | 2020-01-10 | 广东民飞机电有限责任公司 | Gas compression pump |
| CN110671300B (en) * | 2019-09-23 | 2021-08-17 | 广东民飞机电有限责任公司 | Gas compression pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160921 |
|
| RJ01 | Rejection of invention patent application after publication |