CN203063934U - Electronically-controlled vacuum chamber power booster - Google Patents
Electronically-controlled vacuum chamber power booster Download PDFInfo
- Publication number
- CN203063934U CN203063934U CN 201220721172 CN201220721172U CN203063934U CN 203063934 U CN203063934 U CN 203063934U CN 201220721172 CN201220721172 CN 201220721172 CN 201220721172 U CN201220721172 U CN 201220721172U CN 203063934 U CN203063934 U CN 203063934U
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- Prior art keywords
- vacuum
- epithelium
- unit
- valve
- cavity
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- Withdrawn - After Issue
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- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Abstract
The utility model relates to a vacuum power booster in an automobile braking system, and aims to provide an electronically-controlled vacuum chamber power booster capable of being electronically controlled by a finished automobile and achieving intelligent braking. A back cavity of a traditional vacuum power booster and a mechanical device inside the back cavity are removed, and only a front vacuum cavity and a skin film assembly are reserved, therefore the appearance of the vacuum power boost is small, and also can not be limited by a traditional disc shape, different shapes are selected and used so that space inside an automobile is reasonably utilized, and practicality is strong. An electronically-controlled unit is added to the vacuum power booster to replace a traditional mechanical method, a set of magnetic valve device is added in the front of the cavity body so that the power boost can be driven by electronic signals, driving of the finished automobile is intelligent, and braking can be controlled by a finished automobile controlling strategy, and therefore the vacuum power booster is advanced and safe.
Description
Technical field
The utility model relates to the vacuum booster in the brake system of car, specifically, is a kind of finished vehicle electronic control of accepting, and realizes the electric controlled vacuum chamber servo-unit of intelligent braking.
Background technology
Vacuum booster is in the brake system of car one very important component part, it has a cavity that diameter is bigger, 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 atmosphere, and another part links to each other with engine air inlet tube by pipeline.It is to suck this principle of air when utilizing engine operation, causes a side vacuum of servo-unit, with respect to the difference of pressure of opposite side normal air pressure, utilizes this difference of pressure to produce retrothrust.The vacuum servo system is in braking, also controls the vacuum that enters servo-unit simultaneously, and diaphragm is moved, and utilizes the push rod on the diaphragm to assist manpower to remove to step on and promote brake pedal by linkage.
Vacuum booster in car production market mainly adopts two cavity configurations of chamber, initial vacuum, back air chamber at present, and UNICOM's state in two chambeies produces power brake before and after the control mechanically.Because complicated in mechanical structure, part is numerous, so subsequent production and maintenance trouble comparatively.
Along with the Eltec progress, also more and more trend is intelligent for vehicle drive.Traditional car load physical construction begins to transform to receive the finished vehicle electronic signal control, realizes the intelligent driving purpose.Such as in vacuum booster, adding electronic signal control, can accept the output command that car load ECU (Electric control unit electronic control unit) modulates various objectives, can under the situation that emergency situation, people have little time to react, make a response.Added electronic control mode in the patent utility model of therefore existing partial vacuum servo-unit, " electric control vacuum booster and control method thereof " such as " a kind of electric control vacuum booster " and the patent No. 2.200610032387.4 of application number 201210210474.X, but these utility models just add the automatically controlled pattern that electronic controlled passage is realized servo-unit between the chamber, front and back, therefore improved structure is more complicated, make that reliability reduces on the performance, and agency cost greatly increases, and is not suitable for promoting.
Summary of the invention
The purpose of this utility model is in order to overcome deficiency of the prior art, a kind of finished vehicle electronic control of accepting to be provided, realizing the electric controlled vacuum chamber servo-unit of intelligent braking.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of electric control vacuum booster, by front case and epithelium and airtight cavity of epithelium supporting plate assembly structure, cavity is provided with the vacuum cavity entrance, described cavity is provided with the solenoid control assembly, described solenoid control assembly is provided with vacuum inlet and atmospheric connection, is formed with vacuum passage and plasmas channel accordingly with described vacuum cavity entrance respectively; The driving signal control that described solenoid control assembly is modulated by ECU (Electric control unit electronic control unit) produces break-make between vacuum passage and plasmas channel, thereby produces power-assisted.
As further improvement of the utility model, described ECU receives the electric signal that is transmitted by the pedal stroke sensor on the brake pedal.
As further improvement of the utility model, the pedal front end of described brake pedal is provided with a feedback spring, produces different power-assisted ratios according to the elastic force size of feedback spring.
As further improvement of the utility model, described ECU is for independently to be installed in the car; Perhaps with ABS (Anti-LockBrakeSystem) brake anti-blocking system in ECU share.
As further improvement of the utility model, described front case is provided with the retracing spring that links to each other with described epithelium and epithelium supporting plate assembly, is used for resetting described epithelium and epithelium supporting plate assembly.
As further improvement of the utility model,, 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 the epithelium supporting plate assembly.
As further improvement of the utility model, described dust boot is provided with the stroke sensor that detects described epithelium movement travel.
As further improvement of the utility model, described solenoid control assembly comprises the plurality of electromagnetic valve of control vacuum valve and atmos-valve, can open a plurality of vacuum valves or atmos-valve simultaneously so that cavity sucks fast or the release vacuum; Each vacuum valve or the atmos-valve passage that caliber varies in size of ining succession is mutually respectively selected big or little caliber passage turnover gas as required.
As further improvement of the utility model, described vacuum valve and atmos-valve respectively have two groups, one group big caliber passage, one group of tubule footpath passage.
The utility model provides a kind of novel evacuated servo-unit that is different from the conventional vacuum servo-unit.General vacuum booster is two cavity configurations of vacuum chamber and air chamber, and whether the UNICOM of the unsteady control cock control vacuum chamber of employing and air chamber; And electric controlled vacuum of the present utility model chamber servo-unit only keeps the structure of vacuum chamber, and whether the UNICOM by electromagnetic valve electrical control vacuum chamber and vacuum or atmosphere, produces power-assisted.
The utility model adopts the scheme of a group or several groups of solenoid control cavitys and vacuum, cavity and atmosphere UNICOM to replace traditional unsteady control cock, vacuum valve, owing to removed the mechanical piston part in the cavity, make payload space increase in the cavity, can make that the vacuum booster profile is littler, but also can be not limited to traditional disc-shape, by selecting for use different shapes rationally to utilize space in the car, applicability is strong.
Because the utility model has added the electromagnetic valve assembly, make servo-unit that the interface that mates with car load arranged, can receive the finished vehicle electronic signal, it is more intelligent that car load is driven, and brake can be controlled by integrated vehicle control tactics, therefore more advanced safety.
Description of drawings:
Fig. 1 is the structural representation of the utility model electric controlled vacuum chamber servo-unit.
1-procapsid 2-epithelium and epithelium supporting plate assembly 21-epithelium 22-epithelium supporting plate 3-dust cover 4-epithelium pallet stand and take-off lever assembly 41-take-off lever and output bulb 5-epithelium collar support 6-stroke sensor 61-stroke sensor core 7-back-moving spring 8-master 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-fixed head 15-PTS
Fig. 2 is the utility model workflow diagram.
Fig. 3 is the electromagnetic valve assembly schematic internal view that adopts two groups of vacuum valve/atmos-valves.
The specific embodiment:
Be described in detail below in conjunction with accompanying drawing and the utility model of embodiment.
As shown in Figure 1, electric control vacuum booster of the present utility model, by front case 1, epithelium and epithelium supporting plate assembly 2 constitute 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.Epithelium supporting plate 22 outsides are provided with the dust boot 3 of arc, are used for protecting epithelium 21; Because if ash is arranged on the epithelium, rubbed of a specified duration and will injure epithelium.Epithelium pallet stand and take-off lever assembly 4 spring 7 that is reset compresses, and take-off lever 41 tops are to master brake cylinder 8.Stroke sensor 6 is fixed on the dust boot 3, and wherein sensor core 61 is fixed on the epithelium collar support 5, for detection of the movement travel of epithelium 21; Certainly stroke sensor unit 6 also can be fixed in the front end of epithelium 21.
ECU 94 of the present utility model can place the inside of electromagnetic valve assembly 9, also can be external, independently be installed in the car, and perhaps the ECU with car load ABS system shares, to save resource.Adopt the parts of ABS in the specific embodiment, with finishing " braking-loosen " circulation continuous action, the function of integration section ABS at the utmost point in the short time after the software programming.
Solenoid control assembly of the present utility model 9 inside are 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 forms plasmas channel with vacuum cavity entrance 93; Brake pedal 10 makes pedal sensor 15 produce signal by pedal push rod 11, is delivered to ECU 94 modulation treatment, and then the control solenoid control corresponding vacuum passage of assembly 9 break-makes or plasmas channel, realizes the power-assisted mode.
Mode of operation as shown in Figure 2, sensor of the present utility model is communicated by letter with car load ECU or servo-unit ECU by the CAN bus with electromagnetic valve.When chaufeur is stepped on brake pedal, pedal sensor is transferred to ECU with electric signal, analysis meter is calculated pedal stroke and pedal dynamics, ECU sends the driving signal to electromagnetic valve, open vacuum solenoid, vacuum booster sucks vacuum, and epithelium pushes away before under bar pressure, and the output masthead provides power-assisted to master brake cylinder; The servo-unit stroke sensor is sent to ECU with the epithelium position signal simultaneously, analyzes through ECU, whether has reached the desired braking strength of chaufeur; When stroke reaches driver intention, close vacuum solenoid, keep braking strength.When chaufeur unclamped pedal, pedal stroke sensor provided signal to ECU, and ECU sends signal and opens choker relief valve, allowed cavity lose vacuum, so epithelium is got back to original position again under the effect of retracing spring; This moment, the servo-unit stroke sensor was given the ECU position signal, and ECU turn-offs choker relief valve.When electromagnetic valve was closed all connecting tubes, epithelium 21 just kept existing position, and servo-unit is kept power-assisted.
Among Fig. 1, the front end of driver pedal is to be with a feedback spring 11 on the pedal push rod 11, is fixed between feedback spring baffle plate 12 and the adapter plate 14, links to each other with pedal stroke sensor 15.Select the suitable feedback spring 11 of specification, can produce and the feedback sense of the same size of conventional vacuum servo-unit chaufeur, and can reach the effect of adjusting the power-assisted ratio by selecting different springs for use, simple to operate, be easy to realize.And for traditional servo-unit, adjust power-assisted than adjusting the servo-unit inner structure, complicated operation.Pedal stroke sensor 15 sends to ECU with pedal take-off lever displacement, can analyze to draw chaufeur brake intention and corresponding actions, and the driving signal that modulates is passed to electromagnetic valve assembly 9, the break-make of control electromagnetic valve group.
Electromagnetic valve assembly 9 in the utility model can adopt one group of three-way magnetic valve, also can adopt plurality of electromagnetic valve control vacuum valve and atmos-valve, each vacuum valve or the atmos-valve passage that caliber varies in size of ining succession mutually respectively.Shown in Figure 3 is the electromagnetic valve assembly schematic internal view that adopts two groups of vacuum valve/atmos-valves, and cavity mouth place is connected with two groups of vacuum valves and atmos-valve among the figure, and one group is big caliber passage, and one group is tubule footpath passage.Like this, use tubule footpath passage can make cavity suck vacuum gently, provide power-assisted gently, it is too fast to prevent from braking, and influences occupant's comfort level; Use big caliber passage can make cavity turnover gas quick, reach the effect of quick brake.
At last, need to prove, the specific embodiment described in this specification sheets, its flow process, title that technology contents is named etc. can be different.Allly conceive equivalence or the simple change that described structure, feature and principle are done according to the utility model patent, be included in the protection domain of the utility model patent.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (9)
1. electric controlled vacuum chamber servo-unit, by front case (1) and epithelium and airtight cavity of epithelium supporting plate assembly (2) structure, 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 with described vacuum cavity entrance (93) respectively; Described solenoid control assembly (9) is subjected to ECU(94) the driving signal control that modulates produces break-make, thereby produces power-assisted between vacuum passage and plasmas channel.
2. according to the described electric controlled vacuum of claim 1 chamber servo-unit, it is characterized in that described ECU(94) receive the electric signal that is transmitted by the pedal stroke sensor (15) on the brake pedal (10).
3. according to the described electric controlled vacuum of claim 2 chamber servo-unit, it is characterized in that the pedal front end of described brake pedal (10) is provided with a feedback spring (13), produce different power-assisted ratios according to the elastic force size of feedback spring (13).
4. according to each described electric controlled vacuum chamber servo-unit in the claim 1 to 3, it is characterized in that described ECU(94) for independently to be installed in the car; Perhaps with ABS in ECU share.
5. according to the described electric controlled vacuum of claim 1 chamber servo-unit, it is characterized in that described front case (1) is provided with the retracing spring (7) that links to each other with described epithelium and epithelium supporting plate assembly (2), be used for resetting described epithelium and epithelium supporting plate assembly (2).
6. according to the described electric controlled vacuum of claim 1 chamber servo-unit, 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 the epithelium supporting plate assembly (2).
7. according to the described electric controlled vacuum of claim 6 chamber servo-unit, it is characterized in that described dust boot (3) is provided with the stroke sensor (6) that detects described epithelium (21) movement travel.
8. according to the described electric controlled vacuum of claim 1 chamber servo-unit, it is characterized in that described solenoid control assembly (9) comprises the plurality of electromagnetic valve of control vacuum valve and atmos-valve; Each vacuum valve or the atmos-valve passage that caliber varies in size of ining succession mutually respectively.
9. described electric controlled vacuum chamber servo-unit according to Claim 8 is characterized in that described vacuum valve and atmos-valve respectively have two groups, one group big caliber passage, one group of tubule footpath passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721172 CN203063934U (en) | 2012-12-24 | 2012-12-24 | Electronically-controlled vacuum chamber power booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721172 CN203063934U (en) | 2012-12-24 | 2012-12-24 | Electronically-controlled vacuum chamber power booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203063934U true CN203063934U (en) | 2013-07-17 |
Family
ID=48762752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220721172 Withdrawn - After Issue CN203063934U (en) | 2012-12-24 | 2012-12-24 | Electronically-controlled vacuum chamber power booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203063934U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010201A (en) * | 2012-12-24 | 2013-04-03 | 万向钱潮（上海）汽车***有限公司 | Electric control vacuum cavity booster |
| CN112298142A (en) * | 2019-08-02 | 2021-02-02 | 广州汽车集团股份有限公司 | Automobile brake boosting system and method |
-
2012
- 2012-12-24 CN CN 201220721172 patent/CN203063934U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010201A (en) * | 2012-12-24 | 2013-04-03 | 万向钱潮（上海）汽车***有限公司 | Electric control vacuum cavity booster |
| CN103010201B (en) * | 2012-12-24 | 2015-04-15 | 万向钱潮（上海）汽车***有限公司 | Electric control vacuum cavity booster |
| CN112298142A (en) * | 2019-08-02 | 2021-02-02 | 广州汽车集团股份有限公司 | Automobile brake boosting system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20150415 |
|
| RGAV | Abandon patent right to avoid regrant |