CN103010201B - Electric control vacuum cavity booster - Google Patents
Electric control vacuum cavity booster Download PDFInfo
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- CN103010201B CN103010201B CN201210564536.7A CN201210564536A CN103010201B CN 103010201 B CN103010201 B CN 103010201B CN 201210564536 A CN201210564536 A CN 201210564536A CN 103010201 B CN103010201 B CN 103010201B
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- vacuum
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- cavity
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Abstract
The invention relates to a vacuum booster in an automobile brake system, and aims to provide an electric control vacuum cavity booster which can accept the electronic control of a whole vehicle and realize intelligent braking. The rear cavity of a traditional vacuum booster and a mechanical device in the rear cavity are omitted, a front vacuum cavity and a leather diaphragm assembly are only kept, so that the size of the vacuum booster is smaller, a traditional disk shape is not necessarily limited to, a space in the vehicle can be reasonably utilized by selecting different shapes, and the adaptability is high; and according to the vacuum booster, an electric control unit is added to replace a traditional mechanical method, a group of electromagnetic valve devices are additionally arranged in front of the cavity, so that the booster can be driven by an electronic signal, the driving of the whole vehicle is more intelligent, the braking can be controlled by the control strategy of the whole vehicle, and the booster is more advanced and safer.
Description
Technical field
The present invention relates to the vacuum booster in brake system of car, specifically, be that one can accept finished vehicle electronic control, realize the electric control vacuum cavity booster of intelligent braking.
Background technology
Vacuum booster is in brake system of car one very important component part, it has the larger cavity of a diameter, inside has a middle part that the diaphragm of push rod (or piston) is housed, cavity is divided into two parts, a part communicates with air, and another part is connected with engine air inlet tube by pipeline.It sucks this principle of air when utilizing engine operation, causes the side vacuum of servo-unit, relative to the difference of pressure of opposite side normal air pressure, utilize this difference of pressure to produce retrothrust.Vacuum boost system is braking while, also controls the vacuum entering servo-unit simultaneously, diaphragm is moved, and utilizes the push rod on diaphragm to assist manpower to go to step on and promote brake pedal by linkage.
Vacuum booster at present in car production market mainly adopts two cavity configurations of chamber, initial vacuum, rear air chamber, and before and after controlling mechanically, UNICOM's state in two chambeies produces power brake.Due to complicated in mechanical structure, part is numerous, and therefore subsequent production and maintenance comparatively bother.
Along with Eltec progress, vehicle drive also more and more tends to intelligent.Traditional car load physical construction starts transformation to receive finished vehicle electronic signal control, realizes intelligent driving object.In vacuum booster, such as add electronic signal control, the output command that car load ECU (Electric control unit electronic control unit) modulates different object can be accepted, can make a response when having little time reaction when emergency situation, people.Therefore have in the patented invention of partial vacuum servo-unit and add electronic control mode, " a kind of electric control vacuum booster " of such as application number 201210210474.X and " electric control vacuum booster and the control method thereof " of patent No. 2.200610032387.4, but these inventions just add electronic controlled passage to realize the automatically controlled pattern of servo-unit between chamber, front and back, therefore improved structure is more complicated, reliability in performance is reduced, and agency cost greatly increases, be not suitable for promoting.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, providing one can accept finished vehicle electronic and controlling, realizing the electric control vacuum cavity booster of intelligent braking.
To achieve these goals, the technical solution used in the present invention is:
A kind of electric control vacuum booster, by front case and epithelium and the airtight cavity of epithelium supporting plate assembly structure one, cavity is provided with vacuum cavity entrance, described cavity is provided with solenoid control assembly, described solenoid control assembly is provided with vacuum inlet and atmospheric connection, is formed with vacuum passage and plasmas channel accordingly respectively with described vacuum cavity entrance; The drive singal that described solenoid control assembly modulates by ECU (Electric control unit electronic control unit) controls to produce break-make between vacuum passage and plasmas channel, thus produces power-assisted.
As a further improvement on the present invention, described ECU receives the electric signal transmitted by the pedal stroke sensor on brake pedal.
As a further improvement on the present invention, the pedal front end of described brake pedal is provided with a feedback spring, produces different assist rates according to the elastic force of feedback spring.
As a further improvement on the present invention, described ECU is for be independently arranged in car; Or share with the ECU in ABS (Anti-LockBrakeSystem) brake anti-blocking system.
As a further improvement on the present invention, described front case is provided with the retracing spring be connected with described epithelium and epithelium supporting plate assembly, for described epithelium and the epithelium supporting plate assembly of resetting.
As a further improvement on the present invention, the back of described epithelium and epithelium supporting plate assembly is provided with dust boot, for the protection of the epithelium on described epithelium and epithelium supporting plate assembly.
As a further improvement on the present invention, described dust boot is provided with the stroke sensor detecting described epithelium movement travel.
As a further improvement on the present invention, described solenoid control assembly comprises the plurality of electromagnetic valve controlling vacuum valve and atmos-valve, can open multiple vacuum valve or atmos-valve sucks fast to make cavity or discharges vacuum simultaneously; Each vacuum valve or atmos-valve are ined succession the different passage of pipe diameter size respectively mutually, select large or little caliber passage to pass in and out gas as required.
As a further improvement on the present invention, described vacuum valve and atmos-valve respectively have two groups, one group of Large Diameter Pipeline passage, one group of pipe with small pipe diameter passage.
The invention provides a kind of novel evacuated servo-unit being different from conventional vacuum servo-unit.General vacuum booster is two cavity configurations of vacuum chamber and air chamber, and whether the UNICOM of employing floating control valve control vacuum chamber and air chamber; And electric control vacuum cavity booster of the present invention only retains the structure of vacuum chamber, by the UNICOM of electromagnetic valve electrical control vacuum chamber and vacuum or air whether, produce power-assisted.
The present invention adopts the scheme of a group or several groups of solenoid control cavitys and vacuum, cavity and atmosphere to replace traditional floating control valve, vacuum valve, owing to eliminating the mechanical piston part in cavity, payload space in cavity is increased, vacuum booster profile can be made less, but also traditional disc-shape can be not limited to, the space coming in Appropriate application car by selecting different shapes, applicability is strong.
Owing to present invention adds electromagnetic valve assembly, make servo-unit have the interface mated with car load, finished vehicle electronic signal can be received, car load is driven more intelligent, brake can be controlled by integrated vehicle control tactics, therefore more advanced safety.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of electric control vacuum cavity booster of the present invention.
1-front case 2-epithelium and epithelium supporting plate assembly 21-epithelium 22-epithelium supporting plate 3-dust boot 4-epithelium pallet stand and take-off lever assembly 41-take-off lever and export bulb 5-epithelium collar support 6-stroke sensor 61-stroke sensor core 7-retracing spring 8-master brake cylinder and oil can 9-solenoid control assembly 91-vacuum inlet 92-atmospheric connection 93-vacuum cavity entrance 94-ECU 10-brake pedal 11-pedal push rod 12-feedback spring baffle plate 13-feedback spring 14-adapter plate 15-pedal stroke sensor
Fig. 2 is workflow diagram of the present invention.
Fig. 3 is the electromagnetic valve assembly schematic internal view of employing two groups of vacuum valve/atmos-valves.
Detailed description of the invention:
Below in conjunction with accompanying drawing and embodiment, the present invention is described in detail.
As shown in Figure 1, electric control vacuum booster of the present invention, by front case 1, epithelium and epithelium supporting plate assembly 2 form an airtight cavity.Epithelium and epithelium supporting plate assembly 2 comprise epithelium 21 and epithelium supporting plate 22, and they are fixed together by epithelium collar support 5 by epithelium pallet stand and take-off lever assembly 4.Be provided with the dust boot 3 of arc outside epithelium supporting plate 22, be used for protecting epithelium 21; Because if epithelium has ash, having rubbed of a specified duration will injure epithelium.Epithelium pallet stand and take-off lever assembly 4 spring 7 that is reset compresses, and take-off lever 41 pushes up on master brake cylinder 8.Stroke sensor 6 is fixed on dust boot 3, and wherein sensor core 61 is fixed on epithelium collar support 5, for detecting the movement travel of epithelium 21; Certain stroke sensor unit 6 also can be fixed on the front end of epithelium 21.
ECU94 of the present invention can be placed in the inside of electromagnetic valve assembly 9, also can be external, is independently installed in car, or shares with the ECU of car load ABS system, with saving resource.The parts of ABS are adopted, with completing " brake-loosen " circulation continuous action after software programming in very short time, the function of integration section ABS in specific embodiment.
Solenoid control assembly 9 inside of the present invention is formed with vacuum inlet 91, atmospheric connection 92 and vacuum cavity entrance 93, and wherein vacuum inlet 91 and vacuum cavity entrance 93 form vacuum passage; Atmospheric connection 92 and vacuum cavity entrance 93 form plasmas channel; Brake pedal 10 makes pedal sensor 15 produce signal by pedal push rod 11, is delivered to ECU94 modulation treatment, and then Controlling solenoid valve controls the corresponding vacuum passage of assembly 9 break-make or plasmas channel, realizes power-assisted mode.
As shown in Figure 2, sensor of the present invention is communicated with car load ECU or servo-unit ECU by CAN with electromagnetic valve mode of operation.When chaufeur steps on brake pedal, pedal sensor by electric signal transmission to ECU, analysis meter calculates pedal stroke and pedal dynamics, ECU sends to the drive singal of electromagnetic valve, open vacuum solenoid, vacuum booster sucks vacuum, and epithelium before pushes away at atmosheric pressure, exports on masthead to master brake cylinder and provides power-assisted; Epithelium position signal is sent to ECU by servo-unit stroke sensor simultaneously, analyzes, whether reached the desired braking strength of chaufeur through ECU; When stroke reaches driver intention, close vacuum solenoid, maintain braking strength.When chaufeur unclamps pedal, pedal stroke sensor provides signal and sends signal to ECU, ECU and open choker relief valve, and allow cavity lose vacuum, therefore epithelium is under the effect of retracing spring, gets back to original position again; Now servo-unit stroke sensor is to ECU position signal, and ECU turns off choker relief valve.When all connecting tubes are closed by electromagnetic valve, epithelium 21 just keeps existing position, and servo-unit maintains power-assisted.
In Fig. 1, on the front end of driver pedal and pedal push rod 11, cover has a feedback spring 11, is fixed between feedback spring baffle plate 12 and adapter plate 14, is connected with pedal stroke sensor 15.Select the suitable feedback spring 11 of specification, can to produce chaufeur and conventional vacuum servo-unit of the same size feedback feel, and can by selecting different springs to reach the effect adjusting assist rate, simple to operate, be easy to realization.And for traditional servo-unit, assist rate be adjusted and must adjust servo-unit inner structure, complicated operation.Pedal take-off lever displacement is sent to ECU by pedal stroke sensor 15, can analyze and draw chaufeur brake intention and corresponding actions, the drive singal modulated be passed to electromagnetic valve assembly 9, the break-make of Controlling solenoid valve group.
Electromagnetic valve assembly 9 in the present invention can adopt one group of three-way magnetic valve, and plurality of electromagnetic valve also can be adopted to control vacuum valve and atmos-valve, and each vacuum valve or atmos-valve are ined succession the different passage of pipe diameter size respectively mutually.Shown in Fig. 3 is the electromagnetic valve assembly schematic internal view of employing two groups of vacuum valve/atmos-valves, and in figure, cavity mouth place is connected with two groups of vacuum valves and atmos-valve, and one group is Large Diameter Pipeline passage, and one group is pipe with small pipe diameter passage.Like this, use pipe with small pipe diameter passage that cavity can be made to suck vacuum gently, provide power-assisted gently, prevent brake too fast, affect the comfort level of occupant; Use Large Diameter Pipeline passage that cavity can be made to pass in and out gas quick, reach the effect of Quick brake action.
Finally, it should be noted that, the specific embodiment described in this specification sheets, title that its flow process, technology contents are named etc. can be different.All equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection domain of patent of the present invention.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (7)
1. an electric control vacuum booster, by front case (1) and epithelium and the airtight cavity of epithelium supporting plate assembly (2) structure one, cavity is provided with vacuum cavity entrance (93), it is characterized in that, described cavity is provided with solenoid control assembly (9), described solenoid control assembly (9) is provided with vacuum inlet (91) and atmospheric connection (92), is formed with vacuum passage and plasmas channel accordingly respectively with described vacuum cavity entrance (93); The drive singal that described solenoid control assembly (9) modulates by ECU (Electric control unit electronic control unit) (94) controls to produce break-make between vacuum passage and plasmas channel, thus produces power-assisted; Described solenoid control assembly (9) comprises the plurality of electromagnetic valve controlling vacuum valve and atmos-valve; Each vacuum valve or atmos-valve control the different passage of pipe diameter size respectively; Described vacuum valve and atmos-valve respectively have two groups, and one group controls Large Diameter Pipeline passage, and one group controls pipe with small pipe diameter passage.
2. electric control vacuum booster according to claim 1, it is characterized in that, described ECU (94) receives the electric signal transmitted by the pedal stroke sensor (15) on brake pedal (10).
3. electric control vacuum booster according to claim 2, it is characterized in that, the pedal front end of described brake pedal (10) is provided with a feedback spring (13), and the elastic force according to feedback spring (13) produces different assist rates.
4. electric control vacuum booster according to any one of claims 1 to 3, is characterized in that, described ECU (94) is for be independently arranged in car; Or share with the ECU in ABS (Anti-LockBrakeSystem brake anti-blocking system).
5. electric control vacuum booster according to claim 1, it is characterized in that, described front case (1) is provided with the retracing spring (7) be connected with described epithelium and epithelium supporting plate assembly (2), for described epithelium and the epithelium supporting plate assembly (2) of resetting.
6. electric control vacuum booster according to claim 1; it is characterized in that; the back of described epithelium and epithelium supporting plate assembly (2) is provided with dust boot (3), for the protection of the epithelium (21) on described epithelium and epithelium supporting plate assembly (2).
7. electric control vacuum booster according to claim 6, is characterized in that, described dust boot (3) is provided with the stroke sensor (6) detecting described epithelium (21) movement travel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564536.7A CN103010201B (en) | 2012-12-24 | 2012-12-24 | Electric control vacuum cavity booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564536.7A CN103010201B (en) | 2012-12-24 | 2012-12-24 | Electric control vacuum cavity booster |
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| Publication Number | Publication Date |
|---|---|
| CN103010201A CN103010201A (en) | 2013-04-03 |
| CN103010201B true CN103010201B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210564536.7A Active CN103010201B (en) | 2012-12-24 | 2012-12-24 | Electric control vacuum cavity booster |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0136689A2 (en) * | 1983-10-05 | 1985-04-10 | Nissan Motor Co., Ltd. | Vehicle brake system |
| US5350225A (en) * | 1992-03-17 | 1994-09-27 | Mercedes-Benz Ag | Road vehicle brake-pressure control device |
| DE19537963A1 (en) * | 1995-10-12 | 1997-04-17 | Teves Gmbh Alfred | Pneumatic brake servo |
| JP3144218B2 (en) * | 1994-06-06 | 2001-03-12 | 三菱自動車工業株式会社 | Vehicle braking system |
| JP2001088668A (en) * | 1999-09-21 | 2001-04-03 | Aisin Seiki Co Ltd | Brake controller |
| CN201553139U (en) * | 2009-11-06 | 2010-08-18 | 温州市东启汽车零部件制造有限公司 | Vacuum booster provided with electromagnetic valve |
| CN102717791A (en) * | 2012-06-14 | 2012-10-10 | 浙江师范大学 | Auxiliary braking system |
| CN203063934U (en) * | 2012-12-24 | 2013-07-17 | 万向钱潮（上海）汽车系统有限公司 | Electronically-controlled vacuum chamber power booster |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980035816U (en) * | 1996-12-13 | 1998-09-15 | 김영귀 | Clip for fixing the wire harness of the car |
-
2012
- 2012-12-24 CN CN201210564536.7A patent/CN103010201B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0136689A2 (en) * | 1983-10-05 | 1985-04-10 | Nissan Motor Co., Ltd. | Vehicle brake system |
| US5350225A (en) * | 1992-03-17 | 1994-09-27 | Mercedes-Benz Ag | Road vehicle brake-pressure control device |
| JP3144218B2 (en) * | 1994-06-06 | 2001-03-12 | 三菱自動車工業株式会社 | Vehicle braking system |
| DE19537963A1 (en) * | 1995-10-12 | 1997-04-17 | Teves Gmbh Alfred | Pneumatic brake servo |
| JP2001088668A (en) * | 1999-09-21 | 2001-04-03 | Aisin Seiki Co Ltd | Brake controller |
| CN201553139U (en) * | 2009-11-06 | 2010-08-18 | 温州市东启汽车零部件制造有限公司 | Vacuum booster provided with electromagnetic valve |
| CN102717791A (en) * | 2012-06-14 | 2012-10-10 | 浙江师范大学 | Auxiliary braking system |
| CN203063934U (en) * | 2012-12-24 | 2013-07-17 | 万向钱潮（上海）汽车系统有限公司 | Electronically-controlled vacuum chamber power booster |
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| CN103010201A (en) | 2013-04-03 |
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