CN201882069U - Electric booster braking device of automobile - Google Patents
Electric booster braking device of automobile Download PDFInfo
- Publication number
- CN201882069U CN201882069U CN2010205897909U CN201020589790U CN201882069U CN 201882069 U CN201882069 U CN 201882069U CN 2010205897909 U CN2010205897909 U CN 2010205897909U CN 201020589790 U CN201020589790 U CN 201020589790U CN 201882069 U CN201882069 U CN 201882069U
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Abstract
The utility model relates to an automotive braking device, in particular to an electric booster braking device of an automobile, which comprises a pedal, an input force pushing rod connected with the pedal, a booster connected with the input force pushing rod, an output force pushing rod connected with the booster and a main cylinder connected with the output force pushing rod. The booster comprises a rack connected between the input force pushing rod and the output force pushing rod, a gear engaged with the rack, a direct-current motor-driven reducer assembly connected with the gear through a transmission shaft, an electronic control unit (ECU) and a speed sensor connected with the input force pushing rod, wherein the speed sensor is connected with the electronic control unit (ECU), and the electronic control unit (ECU) is connected with the direct-current motor-driven reducer assembly. The utility model has the characteristics that: the braking boosting power can be automatically adjusted according to the needs, the idle stroke can be effectively avoided, the defect of poor stiffness can be overcome, and the electric booster braking device has an intelligent automatic braking mode, and the like.
Description
Technical field
The utility model relates to a kind of brake device for car, especially relates to a kind of electric booster braking device.
Background technology
Along with the raising of people to the requirement of vehicle safety, people are also improving constantly the requirement of brake device for car.Servo-unit in the existing brake device for car adopts vacuum booster mostly, and vacuum booster is the core component of vacuum servo servo braking system, is to utilize the vacuum of engine air inlet tube and the pressure reduction between the atmosphere to play the power-assisted effect.When engine starting, driving engine is taken the air of vacuum booster ante-chamber, back cavity away by vacuum hose, vacuum booster ante-chamber, back cavity communicate at this moment, all be vacuum, owing to do not step on brake pedal, vacuum valve is open mode at this moment, atmos-valve is closed condition at this moment, the ante-chamber back cavity communicates, and two chambeies do not have pressure reduction, and vacuum booster does not provide power-assisted; When stepping on brake pedal, vacuum valve cuts out earlier, ante-chamber back cavity pathway closure, along with the continuation reach of pedal, this moment, atmos-valve was opened, atmosphere enters back cavity through the atmosphere valve port, because this moment, ante-chamber still was a vacuum, pressure reduction appears in ante-chamber and back cavity, and the back cavity atmospheric pressure is greater than ante-chamber, the epithelium assembly promotes the piston body reach, and brake boost is provided.But existing this vacuum booster constitutes gas chamber by outer hull, has idle travel when gas enters cavity, and power-assisted size can not regulate effectively, causes in drag process medium sensitivity not highly, has certain potential safety hazard.Because vacuum booster front case and rear housing all are sheet metal component, riveted joint or roll extrusion link together then, and the power of being born on the vacuum booster acts on the housing of front and back, so the stressed rigidity of outer hull is bad all.
As notification number is a kind of vacuum booster of CN1576126, comprising: the servo-unit housing; Booster piston, this booster piston is contained in the servo-unit housing, so that the servo-unit enclosure interior is divided into anterior vacuum chamber and the rear operating chamber that links to each other with vacuum source; The valve rod body, this valve rod body is bearing on the rear wall of servo-unit housing slidably, so that be connected with booster piston; The input bar, this input bar can seesaw; The input return spring, this input return spring is along returning direction bias voltage input bar; Control cock, this control cock according to seesawing of this input bar and in conversion operations chamber and vacuum chamber and the atmosphere is communicated with, this input bar is arranged in the valve rod body, this control cock is introduced valve seat by atmosphere, vacuum introduces valve seat and the valve element constitutes, this atmosphere is introduced valve seat and is formed on the valve piston, this valve piston link is imported seesawing of bar and is moved, this vacuum is introduced valve seat and is connected with the valve rod body, move so that link seesawing of valve rod body, and this valve element carries out bias voltage by spring along the direction that makes this valve element place atmosphere to introduce on valve seat and the vacuum introducing valve seat, rupturing operation chamber and atmosphere and vacuum chamber is communicated with when this valve element places on described two valve seats, when atmosphere introducing valve seat is opened along with travelling forward of bar of input, make the operation chamber be communicated with, and when vacuum introducing valve seat is opened along with importing returning of bar, make the operation chamber be communicated with vacuum chamber with atmosphere; And counter-force mechanism, this counter-force mechanism is arranged in the valve rod body with input bar and is supported on slidably between the take-off lever on the servo-unit housing, and this counter-force mechanism will input to the manipulation input force of input bar and the combining ability of the thrust of the booster piston that produced by the bar pressure difference between operation chamber and vacuum chamber passes to take-off lever, wherein, valve piston be installed in counter-force mechanism, with input bar bonded assembly input piston on, therefore, valve piston can be with respect to input piston from being scheduled to retracted position to front slide; Between input piston and valve piston, be furnished with spring is set, be used for the valve piston bias voltage to retracted position; And between valve piston and valve rod body, be furnished with blocking device, so that in advance when the valve rod body travels forward the emergency braking of predetermined stroke or bigger stroke, make atmosphere introduce valve seat on the valve rod body to stay open state by being locked in the proal valve piston of input piston at input piston.Though no matter this patent is normal brake application or emergency braking, all eliminated the delay of atmosphere being introduced the operation chamber, and when emergency braking, can more early reach and remain on servo limit point, but the size of brake boost is automatically regulating as required, and there is idle travel in vacuum-assisted mode.
As notification number be: a kind of electric control vacuum booster of CN200967472, electric control vacuum booster provides a kind of artificial pedal brake pattern that both kept, satisfy the needs of operation of navigating mate normal brake application or emergency brake operations, can carry out the technical scheme of the electric control vacuum booster of brake operating again by autonomous cruise speed system; The utility model design-calculated electric control vacuum booster is made up of vacuum booster, pilot piping, electromagnetic valve etc., connects and can substitute artificial emergency braking under tyre break, situation such as crashproof with automatically controlled mode and autonomous cruise speed system; Also can be applicable to maintain safe distance, the autobrake of application scenario such as automatic backing.Though this patent has been set up intelligent autobrake pattern, but still can't avoid the idle travel that exists in the servo-unit, and power-assisted size automatically regulating as required.
Summary of the invention
The utility model mainly is can not regulate, exist problems such as idle travel effectively at the power-assisted size that existing vacuum automobile power-assisted braking arrangement exists, and power-assisted size when a kind of automobile brake of automatically regulating as required is provided, has avoided the motorcar electric power-assisted braking arrangement of idle travel effectively.
The purpose of this utility model mainly is achieved by following proposal: a kind of motorcar electric power-assisted braking arrangement, comprise pedal, the input force push rod that links to each other with pedal, the servo-unit that links to each other with the input force push rod, the output force pushing bar that links to each other with servo-unit, the master cylinder that links to each other with output force pushing bar, described servo-unit comprises the tooth bar that is connected between input force push rod and the output force pushing bar, with the tooth bar gears in mesh, by transmission shaft and gear bonded assembly DC motor band speed reducer assembly, electronic control unit and be connected in speed sensor on the input force push rod, described speed sensor links to each other with electronic control unit, described electronic control unit links to each other with DC motor band speed reducer assembly, and described DC motor band speed reducer assembly links to each other with Vehicular accumulator cell.Behind user's push down on the pedal, speed sensor on the input force push rod can detect the moving velocity of input force push rod, send signal to electronic control unit, signal need be braked and send to electronic control unit to DC motor band speed reducer assembly by the signal judgement automobile that receives, DC motor band speed reducer assembly passes to gear with moment of torsion by transmission shaft, the gear driven tooth bar moves, tooth bar promotes output force pushing bar compression master cylinder piston, the braking liquid compression is produced high pressure, and high-voltage braking liquid is sent into right front brake respectively through ABS, right back drg, left front brake, left back drg is braked automobile.Speed sensor detects the speed difference of input force push rod moving velocity, sends strong and weak different signals to electronic control unit, and the size of current difference of DC motor band speed reducer assembly is judged and sent to electronic control unit, and the size of brake boost is also different.Adopt the electric booster of pinion and-rack, the size that can regulate brake boost effectively as required automatically, and also whole device adopts the rack-and-gear transmission not have idle travel.Because the existence of set of gears rack-and-pinion mechanical-force-transmission mechanism is arranged, automobile brake could not lose efficacy, and has improved the safety of automobile brake when motor fault or vehicle power did not have electricity!
As preferably, described master cylinder bottom is provided with the travel switch that is used to prevent detonation, and described travel switch links to each other with electronic control unit, and the belt locking drg that is provided with on described electronic control unit and the transmission shaft links to each other.When master cylinder piston moves when touching travel switch, travel switch is connected and is given electronic control unit with signal feedback, electronic control unit by analysis, judge that master cylinder piston has reached the limit of the position, electronic control unit sent the signal command DC motor and stopped operating this moment, and electronic control unit sends signal command belt locking drg and pins transmission shaft earlier simultaneously, and moment sends signal and gives belt locking drg, moment is unclamped transmission shaft again, prevents that electrical motor from continuing power-assisted master cylinder is exploded.
As preferably, automotive front end is provided with the ultrasonic ranging probe that is used to survey the place ahead traffic information, and described ultrasonic ranging probe links to each other with electronic control unit.Automobile in the process of moving, what electronic control unit did not stop sends instruction to the ultrasonic ranging probe, detection vehicle the place ahead traffic information that order ultrasonic ranging probe does not stop, when the ultrasonic ranging probe detection has obstacle in the certain distance of the place ahead, electronic control unit starts the brake program automatically, electronic control unit order this moment DC motor starts, DC motor is rotated by the transmission shaft driven gear, the gear driven tooth bar moves and power is passed to output force pushing bar, and output force pushing bar drives master cylinder piston compression brake liquid and realizes whole intelligent self-actuating brake braking.
As preferably, be provided with tooth bar chute, tooth bar and tooth bar chute sliding block joint below the described tooth bar.The tooth bar below is provided with the tooth bar chute, sliding block joint between tooth bar and the tooth bar chute, and between tooth bar and tooth bar chute, be coated with grease, the force of sliding friction when reducing the tooth bar slip, the sensitieness of assurance servo-unit.
As preferably, described servo-unit is arranged on the enclosure interior with spatial accommodation, and described housing and vehicle body pass through bolted connection.Housing and vehicle body are by bolted connection, because housing is an aluminum casting, the housing of cast aluminium is not easy distortion when stressed, avoided the bad problem of the stressed rigidity of existing vacuum booster housing.
Therefore, the utlity model has the size of automatically regulating brake boost as required, effectively avoided idle travel, avoided rigidity bad, have characteristics such as intelligent autobrake pattern.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is the cutaway views at A-A place in the accompanying drawing 1.
Illustrate: 1-pedal, 2-input force push rod, 3-output force pushing bar, the 4-tooth bar, 5-gear, 6-transmission shaft, 7-DC motor band speed reducer assembly, the 8-electronic control unit, 9-speed sensor, 10-travel switch, 11-belt locking drg, 12-ultrasonic ranging probe, 13-tooth bar chute, 14-housing.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of motorcar electric power-assisted braking arrangement, pedal 1 is hinged with input force push rod 2, and input force push rod 2 is provided with a speed sensor 9, and speed sensor 9 links to each other with electronic control unit 8 on the automobile.Input force push rod 2 is connected with 3 of ball seat riveted joints, and ball seat is threaded with tooth bar 4.Tooth bar 4 belows are provided with tooth bar 4 chutes, sliding block joint and be coated with grease and reduce cliding friction between tooth bar 4 and tooth bar 4 chutes.Tooth bar 4 tops also are provided with one and tooth bar 4 mating gear 5, gear 5 links to each other with DC motor band speed reducer assembly 7 by transmission shaft 6, DC motor band speed reducer assembly 7 is by the power supply of the Vehicular accumulator cell on automobile running, and DC motor band speed reducer assembly 7 links to each other with electronic control unit 8.Tooth bar 4 is connected with output force pushing bar 3, output force pushing bar 3 places are provided with pull back spring, and pull back spring not only guarantees the dynamical equilibrium of brake equipment but also can promote output force pushing bar 3, tooth bar 4, input force push rod 2 and pedal 1 successively when unclamping pedal 1 to reply initial position.Master cylinder is made up of two chambers, and each chamber all is provided with piston and piston return spring.Output force pushing bar 3 links to each other with the first piston of master cylinder, and first piston links to each other with second piston.The master cylinder bottom is provided with one and is used to prevent that piston from exploding the travel switch 10 of master cylinder, travel switch 10 links to each other with electronic control unit 8, transmission shaft is provided with a belt locking drg 11, belt locking drg 11 links to each other with electronic control unit 8, and electronic control unit 8 can send signal instruction to the belt locking drg 11 on the transmission shaft 6.The pinion and-rack Electric booster is placed on housing 14 inside with spatial accommodation, and housing 14 is connected with body bolt.Housing 14 all can be provided with a dust boot to guarantee housing 14 cleaning insides with contact position, the housing 14 of master cylinder with the contact position of input force push rod 2.
Automobile needs glancing impact, when the user steps on brake pedal 1, has manual braking's process and electric booster braking process to brake simultaneously respectively.
Manual braking's process is that the power by pushes pedals 1 passes to input force push rod 2, input force push rod 2 passes to tooth bar 4 by ball seat with power, tooth bar 4 moves in tooth bar 4 chutes, and power passed to output force pushing bar 3, output force pushing bar 3 promotes the master cylinder first piston, this moment, master cylinder first chamber was because braking liquid is compressed the generation high pressure, high-voltage braking liquid promotes master cylinder second piston, high pressure is all set up in master cylinder two chambeies like this, braking liquid exports through two chambeies, enter ABS, ABS sends into right front brake with high-voltage braking liquid through X type loop, right back drg, left front brake, left back drg is braked automobile.When loosen the brake 1, under the application force of pull back spring, pull back spring is passed to spring perch, tooth bar 4, ball seat, input force push rod 2, pedal 1 successively with power, and pedal 1 return is prepared braking procedure next time.
When push down on the pedal 1, pedal 1 amplifies power by lever principle passes to input force push rod 2, when realizing manual braking's process with this, speed sensor 9 on the input force push rod is passed to electronic control unit 8 with detected push rod speed of advance signal, electronic control unit 8 by analysis, judge that automobile needs braking, electronic control unit 8 sends a signal to DC motor band speed reducer assembly 7, DC motor on the order DC motor band speed reducer assembly starts, DC motor is slowed down to increase to turn round by retarder and then by transmission shaft 6 moment of torsion is passed to gear 5, gear 5 rotating band carry-over bars 4 move, tooth bar 4 is passed to output force pushing bar 3 with power, output force pushing bar 3 compression master cylinder pistons, make braking liquid produce high pressure, braking liquid exports through two chambeies, enters ABS, ABS sends into right front brake with high-voltage braking liquid through X type loop, right back drg, left front brake, left back drg, thus played the effect of power brake.When master cylinder second piston moves to master cylinder bottom and contacting travel switch 10, travel switch 10 is connected and is given electronic control unit 8 with signal feedback, electronic control unit 8 by analysis, judge that master cylinder second piston has reached the limit of the position, electronic control unit 8 sent the signal command DC motor and stopped operating this moment, electronic control unit 8 sends signal command belt locking drg 11 and pins transmission shaft 6 earlier simultaneously, and moment send signal and give belt locking drg 11, moment is unclamped transmission shaft 6 again, prevent that electrical motor from continuing power-assisted master cylinder is exploded, electronic control unit 8 reduces to be defeated by the electric current of DC machine gradually then, the DC machine power-assisted is reduced gradually, under the returning place force of the first piston spring and second piston spring, the master cylinder first piston, second piston is return gradually; When loosen the brake 1, under the pull back spring effect, input force push rod 2 returns, push rod speed sensor 9 detects input force push rod 2 just at return, then signal is passed to electronic control unit 8, electronic control unit 8 sends signal by analysis and gives DC motor, the counter-rotating of order DC motor, brake pedal 1 return.
When input force push rod 2 moves when fast, push rod speed sensor 9 is given 8 one strong signals of electronic control unit, and this moment, electronic control unit 8 gave the electric current of DC motor big, and the DC motor moment of torsion is big, and electric booster provides power-assisted big; When input force push rod 2 moves when slow, push rod speed sensor 9 is given 8 one weak signals of electronic control unit, and this moment, electronic control unit 8 gave the electric current of DC motor little, and the DC motor moment of torsion is little, and electric booster provides power-assisted little.Decide the size of electric current in the input dc power motivation by the speed of input force push rod 2 moving velocitys, thereby realize automobile brake work-saving device power-assisted size automatically regulating as required.
Embodiment 2:
The structure of present embodiment and embodiment 1 is basic identical, and difference is, present embodiment is equipped with ultrasonic ranging probe 12 at automotive front end, and ultrasonic ranging probe 12 links to each other with electronic control unit 8.Automobile in the process of moving, what electronic control unit 8 did not stop sends instruction to ultrasonic ranging probe 12, the order ultrasonic ranging probe 12 detection vehicle the place ahead traffic informations that do not stop, the program of finishing in advance according to electronic control unit 8, when ultrasonic ranging probe 12 detects when in the certain distance of the place ahead obstacle being arranged, such as: 50 meters or 20 meters, electronic control unit 8 starts the brake program automatically, and this moment, electronic control unit 8 order DC motor started.Finish the drag task according to electric booster braking process among the embodiment 1.This process does not need artificial pushes pedals 1, can intelligence finish drag.
Should be understood that this embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (7)
1. motorcar electric power-assisted braking arrangement, comprise pedal (1), the input force push rod (2) that links to each other with pedal (1), the servo-unit that links to each other with input force push rod (2), the output force pushing bar that links to each other with servo-unit (3), the master cylinder that links to each other with output force pushing bar, it is characterized in that, described servo-unit comprises the tooth bar (4) that is connected between input force push rod (2) and the output force pushing bar (3), with tooth bar gears in mesh (5), by transmission shaft (6) and gear bonded assembly DC motor band speed reducer assembly (7), electronic control unit ECU(8) and be connected in speed sensor (9) on the input force push rod, described speed sensor (9) and electronic control unit ECU(8) link to each other, described electronic control unit ECU(8) link to each other with DC motor band speed reducer assembly (7), described DC motor band speed reducer assembly (7) links to each other with Vehicular accumulator cell.
2. motorcar electric power-assisted braking arrangement according to claim 1, it is characterized in that, described master cylinder bottom is provided with the travel switch (10) that is used to prevent detonation, described travel switch and electronic control unit ECU(8) link to each other described electronic control unit ECU(8) link to each other with the belt locking drg (11) that is provided with on the transmission shaft.
3. motorcar electric power-assisted braking arrangement according to claim 1 and 2, it is characterized in that, automotive front end is provided with the ultrasonic ranging probe (12) that is used to survey the place ahead traffic information, described ultrasonic ranging probe (12) and electronic control unit ECU(8) link to each other.
4. motorcar electric power-assisted braking arrangement according to claim 1 and 2 is characterized in that, described tooth bar (4) below is provided with tooth bar chute (13), described tooth bar and tooth bar chute sliding block joint.
5. motorcar electric power-assisted braking arrangement according to claim 3 is characterized in that, described tooth bar (4) below is provided with tooth bar chute (13), described tooth bar and tooth bar chute sliding block joint.
6. motorcar electric power-assisted braking arrangement according to claim 4 is characterized in that, described servo-unit is arranged on housing (14) inside with spatial accommodation, and described housing and vehicle body pass through bolted connection.
7. motorcar electric power-assisted braking arrangement according to claim 5 is characterized in that, described servo-unit is arranged on housing (14) inside with spatial accommodation, and described housing and vehicle body pass through bolted connection.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010205897909U CN201882069U (en) | 2010-11-04 | 2010-11-04 | Electric booster braking device of automobile |
Applications Claiming Priority (1)
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CN2010205897909U CN201882069U (en) | 2010-11-04 | 2010-11-04 | Electric booster braking device of automobile |
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CN201882069U true CN201882069U (en) | 2011-06-29 |
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CN2010205897909U Expired - Lifetime CN201882069U (en) | 2010-11-04 | 2010-11-04 | Electric booster braking device of automobile |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102205838A (en) * | 2010-11-04 | 2011-10-05 | 上海华普汽车有限公司 | Electric booster brake device for vehicle |
CN102442292A (en) * | 2011-10-24 | 2012-05-09 | 奇瑞汽车股份有限公司 | Electric power assisting device of braking system and running method of electric power assisting device |
CN105000010A (en) * | 2015-06-25 | 2015-10-28 | 奇瑞汽车股份有限公司 | Electric braking system for automobiles, and using method of electric braking system |
CN105857283A (en) * | 2015-05-18 | 2016-08-17 | 北京京西重工有限公司 | Brake booster assembly |
CN107776563A (en) * | 2017-11-24 | 2018-03-09 | 吉林大学 | A kind of adjustable electric booster braking system of gearratio |
US9925968B2 (en) | 2015-05-18 | 2018-03-27 | Beijingwest Industries Co., Ltd. | Brake booster assembly |
CN109756066A (en) * | 2019-02-27 | 2019-05-14 | 浙江百缔传动科技有限公司 | Electric pushrod |
CN110481521A (en) * | 2019-09-10 | 2019-11-22 | 上海拿森汽车电子有限公司 | A kind of the rack gear control method for movement and device of electric brake system |
CN113104003A (en) * | 2021-04-21 | 2021-07-13 | 江苏大学 | Automobile safety braking booster unit |
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2010
- 2010-11-04 CN CN2010205897909U patent/CN201882069U/en not_active Expired - Lifetime
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102205838A (en) * | 2010-11-04 | 2011-10-05 | 上海华普汽车有限公司 | Electric booster brake device for vehicle |
CN102442292A (en) * | 2011-10-24 | 2012-05-09 | 奇瑞汽车股份有限公司 | Electric power assisting device of braking system and running method of electric power assisting device |
CN102442292B (en) * | 2011-10-24 | 2014-05-07 | 奇瑞汽车股份有限公司 | Electric power assisting device of braking system and running method of electric power assisting device |
US9925968B2 (en) | 2015-05-18 | 2018-03-27 | Beijingwest Industries Co., Ltd. | Brake booster assembly |
CN105857283A (en) * | 2015-05-18 | 2016-08-17 | 北京京西重工有限公司 | Brake booster assembly |
CN105857283B (en) * | 2015-05-18 | 2018-09-25 | 北京京西重工有限公司 | Brake boost device assembly |
CN105000010A (en) * | 2015-06-25 | 2015-10-28 | 奇瑞汽车股份有限公司 | Electric braking system for automobiles, and using method of electric braking system |
CN105000010B (en) * | 2015-06-25 | 2018-07-06 | 奇瑞汽车股份有限公司 | For automobile electrodynamic braking system and use its method |
CN107776563A (en) * | 2017-11-24 | 2018-03-09 | 吉林大学 | A kind of adjustable electric booster braking system of gearratio |
CN109756066A (en) * | 2019-02-27 | 2019-05-14 | 浙江百缔传动科技有限公司 | Electric pushrod |
CN109756066B (en) * | 2019-02-27 | 2024-06-25 | 浙江百缔传动科技有限公司 | Electric push rod |
CN110481521A (en) * | 2019-09-10 | 2019-11-22 | 上海拿森汽车电子有限公司 | A kind of the rack gear control method for movement and device of electric brake system |
CN110481521B (en) * | 2019-09-10 | 2021-08-06 | 上海拿森汽车电子有限公司 | Rack movement control method and device of electric brake system |
CN113104003A (en) * | 2021-04-21 | 2021-07-13 | 江苏大学 | Automobile safety braking booster unit |
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Granted publication date: 20110629 |
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