CN110155013A - The electric booster braking system that integrated hydraulic power is coupled with mechanical force - Google Patents
The electric booster braking system that integrated hydraulic power is coupled with mechanical force Download PDFInfo
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- CN110155013A CN110155013A CN201910439345.XA CN201910439345A CN110155013A CN 110155013 A CN110155013 A CN 110155013A CN 201910439345 A CN201910439345 A CN 201910439345A CN 110155013 A CN110155013 A CN 110155013A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a kind of electric booster braking systems that integrated hydraulic power is coupled with mechanical force, braking system includes first gear, second gear, assist motor, pedal push rod, power-assisted builds cylinder pressure, master cylinder, fluid reservoir, hydraulic control unit and electronic control unit, wherein first gear, second gear, assist motor and power-assisted are built cylinder pressure and are assemblied in a shell, assist motor is connected with first gear and first gear is driven to be rotated, first gear, which is meshed with the second gear, drives second gear to rotate synchronously, screw rod is bolted among second gear, screw rod is hollow structure, screw rod is driven to be moved left and right in second gear rotation process, the utility model has the advantages that realizing that operator brake power is exported and do not interfere with each other simultaneously with motor braking power, electric booster braking system can implement active brake, failure backup and braking energy The functions such as recycling realize Vehicular intelligentization control, can be as the bottom actuator of intelligent automobile driving assistance system.
Description
The present invention relates to a kind of electric booster braking system, in particular to what a kind of integrated hydraulic power was coupled with mechanical force
Electric booster braking system.
Background technique
Currently, vehicle intellectualized, motorized is following Main Trends of The Development, the hydraulic braking of traditional vacuum servo formula
System is no longer satisfied requirement.Electro-hydraulic brake (EHB) and electric mechanical braking (EMB) are also due to high energy consumption, no-failure
The problems such as backup, is constrained development.In recent years, electric booster braking system starts to become the research hotspot of braking industry.It is electronic
The partly decoupled or full decoupled between brake pedal and master cylinder may be implemented in energy assisted braking system, guarantees that vehicle is realizing system
Energy also has good pedal sense while recycling.Meanwhile electric booster braking system can be real by control motor
Now become assist rate function, by with the sensors cooperating such as radar, camera, automatic system in emergency circumstances also may be implemented
It is dynamic.In summary, electric booster braking system and its control method are the mainstream sides of brake system of car intelligence, motorized
To.
Although there are many advantages for electric booster braking system, but lack in existing technical solution to driving at present
The considerations of member's brake force is coupled and is decoupled with motor braking power.In most variations, driver pedal power and motor are helped
Power is coupled by reaction plate, and power-assisted size is controlled using displacement gap sensor acquisition reaction plate Internal and external cycle deformation difference, and control is calculated
Method is more complex.And need to realize by pedal sense simulator and decouple, structure is complicated and pedal sense and time of day have difference
It is different.Some electric booster braking systems use full decoupled scheme, adjust the hardware such as liquid storage cylinder and spring by then passing through
Pedal sense is simulated, cannot match fine electric elements and control algolithm, in addition electronic control unit ECU needs accurate control more
A solenoid valve causes entire brake fluid system control difficulty larger, and structure is complicated, at high cost and be not easy to real vehicle arrangement.
Summary of the invention
It is existing in use that the purpose of the present invention is to solve existing vehicle electric energy assisted braking systems
Problems and electric booster braking system that a kind of integrated hydraulic power provided is coupled with mechanical force.
The electric booster braking system that integrated hydraulic power provided by the invention is coupled with mechanical force include first gear,
Second gear, assist motor, pedal push rod, power-assisted build cylinder pressure, master cylinder, fluid reservoir, hydraulic control unit and electronic control unit,
Wherein first gear, second gear, assist motor and power-assisted are built cylinder pressure and are assemblied in a shell, assist motor and first gear phase
It connecting and first gear is driven to be rotated, first gear, which is meshed with the second gear, drives second gear to rotate synchronously, and second
Screw rod is bolted among gear, screw rod is hollow structure, drives screw rod to be moved left and right in second gear rotation process, screw rod
Rear end be connected with the first piston that power-assisted is built in cylinder pressure, screw rod can drive first piston in the inner cavity that power-assisted builds cylinder pressure
It is moved left and right, master cylinder is connected to the rear portion that power-assisted builds cylinder pressure, and pedal push rod passes through after the front end side wall of shell successively
The inner cavity for building cylinder pressure from the inner cavity of screw rod and power-assisted passes through, rear end and the second piston phase in master cylinder inner cavity of pedal push rod
Connection, the first piston that power-assisted is built in cylinder pressure are set on pedal push rod, and first piston is slidably connected with pedal push rod, and pedal pushes away
Oil transportation channel is offered on the rear portion body of rod of bar, power-assisted builds the inner cavity of cylinder pressure and the inner cavity of master cylinder and passes through the oil transportation channel phase
Connection, fluid reservoir is connected with the inner cavity of master cylinder, and fluid reservoir provides hydraulic oil for master cylinder, hydraulic control unit also with
The inner cavity of master cylinder is connected, and pedal push rod, hydraulic control unit and assist motor are connected with electronic control unit, automatically controlled list
The work of member control assist motor and hydraulic control unit.
The diameter of first gear is less than the diameter of second gear, and second gear is fixed on the inner cavity of shell by fixed frame
In, second gear and fixed frame junction are equipped with bearing, and the front end of screw rod is connected with connection frame, and the both ends of connection frame fill respectively
Equipped with sliding block, two sliding blocks are respectively sleeved in two guide posts, be able to drive in screw rod moving process sliding block along guide post into
Row sliding.
The first return spring, the company between pedal push rod and electronic control unit are equipped between pedal push rod and housing forward end sidewall
Link is equipped with pedal travel sensor, and the displacement data of pedal push rod can be real-time transmitted to electricity by pedal travel sensor
Control unit.
The rear portion that power-assisted builds in the inner cavity of cylinder pressure in first piston is equipped with the second return spring, and the second return spring is arranged
On pedal push rod.
The front end of master cylinder inner cavity is equipped with sealing shroud, and sealing shroud is set on pedal push rod, and sealing shroud is pushed away with pedal
It is sliding contact between bar, is the first working chamber between the second piston front end in the rear end and master cylinder inner cavity of sealing shroud,
The inner cavity that power-assisted builds cylinder pressure is connected by the oil transportation channel opened up on the body of rod of pedal push rod rear portion with the first working chamber, braking master
It is also equipped with third piston in the inner cavity of cylinder, the second working chamber, the second working chamber are formed between second piston and third piston
In be equipped with third return spring, the rear end of third piston and the rear end of master cylinder inner cavity are formed with third working chamber, third
The 4th return spring is equipped in working chamber, fluid reservoir is connected with the second working chamber and third working chamber respectively by pipeline,
Fluid reservoir provides hydraulic oil for the second working chamber and third working chamber, and hydraulic control unit is also worked with second respectively by pipeline
Chamber is connected with third working chamber.
Hydraulic force snesor, hydraulic force snesor and electricity are connected on the connecting line of hydraulic control unit and master cylinder
Control unit is connected, and hydraulic force snesor can be also connected with oil pressure data real-time transmission to electronic control unit, hydraulic control unit
There is wheel cylinder, hydraulic control unit controls the work of wheel cylinder.
Above-mentioned assist motor, hydraulic control unit, electronic control unit, pedal travel sensor, hydraulic force snesor and system
Driving wheel cylinder is the assembling of existing equipment, and therefore, concrete model and specification are not repeated.
The working principle of the invention:
The electric booster braking system that integrated hydraulic power provided by the invention is coupled with mechanical force has electric boosted system
Dynamic, active brake and failure three kinds of operating modes of backup, described in detail below:
One, electric booster braking function:
When system is in electric booster braking mode, driver's brake pedal, pedal push rod overcomes the first return
The resistance of spring is translatable to the right, directly acts in master cylinder inner cavity across shell, lead screw inner cavity, first piston and sealing shroud
Second piston, realize that manpower to master cylinder builds pressure.
At the same time, pedal travel sensor collects the displacement of pedal push rod, and displacement signal is sent to electricity
Unit is controlled, electronic control unit analyzes the braking intention of driver according to pedal travel information, calculates total required for this braking
Brake force FS, for new-energy automobile, electronic control unit according to the working condition of the power motor of vehicle at this time and battery etc.,
Calculate the regenerative braking force F that vehicle at this time can generateR, total brake force FSSubtract regenerative braking force FRObtain this braking institute
The hydraulic braking force F neededH, i.e. FH=FS-FR.Electronic control unit is according to hydraulic braking force FHSize, obtained by assist characteristic curve
The power-assisted value that assist motor needs out, and control instruction is sent to assist motor, assist motor generates corresponding according to instruction
Revolving speed and torque, assist motor output shaft drive first gear drive second gear to rotate, second gear rotation drive lead screw to
Right translation pushes first piston to build cylinder pressure to the power-assisted full of hydraulic oil and builds pressure, and lead screw is translatable to the right under the action of guiding mechanism
But not it rotates, hydraulic oil passes through the oil transportation channel opened up on the body of rod of pedal push rod rear portion to the master cylinder full of hydraulic oil
First working chamber builds pressure, pushes second piston to realize that master cylinder is electric boosted and builds pressure.
Manpower and the motor power-assisted that this process driver's pedal generates couple in the first working chamber in master cylinder.
When driver loosens the brake, pedal push rod return under the action of the first return spring, electric boosted mechanism
Return is inverted by assist motor.
Two, active brake function:
For being equipped with the vehicle of velocity sensor, distance measuring sensor device, in the non-brake pedal of driver, i.e.,
Displacement signal is not detected in pedal travel sensor, when vehicle and preceding object are learnt in velocity sensor, distance measuring sensor measurement
Object is apart from too short, it is necessary to which when brake measure being taken to prevent collision or other hazardous acts, electric booster braking system enters
Active brake mode.
Under active brake mode, the signal that electronic control unit transmits other onboard sensors is analyzed, and judges vehicle
Required initiative brake is sent to assist motor by control circuit and is instructed, and assist motor drives first gear according to instruction
Second gear is driven to rotate, second gear drives lead screw to be translatable to the right, so that pushing first piston to build cylinder pressure to power-assisted builds pressure, and
Pressure is built to the first working chamber in master cylinder by the oil transportation channel opened up on the body of rod of pedal push rod rear portion, and then pushes second
Piston builds pressure to master cylinder, realizes the active brake of line traffic control.Under active brake mode, stepped on once electronic control unit receives
The displacement signal of plate stroke sensor, system are switched to conventional electric booster braking mode immediately.
Three, fail backup functionality:
According to related request, when brake system non-functional or certain brake components break down, braking system is still to guarantee
Certain severity of braking can be generated to guarantee safety and reliability.
The electric booster braking system that integrated hydraulic power provided by the invention is coupled with mechanical force assist motor or certain
A driving member breaks down, when can not work normally electric boosted component.System can enter failure back-up job mode, this mould
Driver can push pedal push rod to directly act on second piston by brake pedal under formula, build pressure to master cylinder, from
And braking system is made to remain to generate certain brake force, realize failure backup functionality.
Beneficial effects of the present invention:
The electric booster braking system that integrated hydraulic power provided by the invention is coupled with mechanical force eliminates reaction plate knot
Structure, simplifies the control algolithm of entire braking system, while also eliminating and crossing ambassador's reaction tray excessive deformation due to radial force and make
At security risk.The side that the present invention is coupled using driver's pedal power with the hydraulic coupling that servomechanism pushes piston to generate
Formula, structure is simple, improves the response speed and braking pressure control precision of system, can be realized the active brake of line traffic control.It adopts
Add mechanically operated scheme with assist motor, eliminates high pressure accumulator structure compared to electronic hydraulic brake system, reduce
Leakage hidden danger, faster, braking pressure control is more accurate for response speed, improves the integration degree of electric booster braking system, real
Existing operator brake power is exported and is not interfere with each other simultaneously with motor braking power, and is reduced as best one can for realizing correlation function
Components.The present invention compares full decoupled electronic hydraulic brake system, does not need that solenoid valve progress pedal decoupling is additionally arranged
It is backed up with failure, reduces electronic control unit ECU to the control difficulty of whole system.The present invention under the backup mode that fails, due to
Pedal sense simulator is eliminated, because without idle stroke, fast response time works relatively reliable, and driver can pass through braking
Pedal builds rapidly pressure and realizes vehicle braking.Electric booster braking system of the invention can implement active brake, failure backup and
The functions such as Brake energy recovery, moreover it is possible to which effective integration electronic stability program (ESP), adaptive learning algorithms (ACC) etc. are actively controlled
Technology processed realizes Vehicular intelligentization control, can be as the bottom actuator of intelligent automobile driving assistance system.
Detailed description of the invention
Fig. 1 is electric booster braking system overall structure diagram of the present invention.
Fig. 2 is pedal push rod of the present invention and second piston connection structure enlarged diagram.
Mark in upper figure is as follows:
1, first gear 2, second gear 3, assist motor 4, pedal push rod
5, power-assisted builds cylinder pressure 6, master cylinder 7, fluid reservoir 8, hydraulic control unit
9, electronic control unit 10, shell 11, screw rod 12, first piston 13, second piston
14, oil transportation channel 15, fixed frame 16, bearing 17, connection frame 18, sliding block
19, guide post 20, the first return spring 21, pedal travel sensor 22, the second return spring
23, sealing shroud 24, the first working chamber 25, third piston 26, the second working chamber
27, third return spring 28, third working chamber 29, the 4th return spring
30, hydraulic force snesor 31, wheel cylinder.
Specific embodiment
It please refers to shown in Fig. 1 to Fig. 2:
The electric booster braking system that integrated hydraulic power provided by the invention is coupled with mechanical force includes first gear
1, second gear 2, assist motor 3, pedal push rod 4, power-assisted build cylinder pressure 5, master cylinder 6, fluid reservoir 7,8 and of hydraulic control unit
Electronic control unit 9, wherein first gear 1, second gear 2, assist motor 3 and power-assisted are built cylinder pressure 5 and are assemblied in a shell 10, power-assisted
Motor 3 is connected with first gear 1 and first gear 1 is driven to be rotated, and first gear 1 is meshed drive with second gear 2
Second gear 2 rotates synchronously, and screw rod 11 is bolted among second gear 2, and screw rod 11 is hollow structure, and second gear 2 rotated
Screw rod 11 is driven to be moved left and right in journey, the rear end of screw rod 11 is connected with the first piston 12 that power-assisted is built in cylinder pressure 5, screw rod
11 can drive first piston 12 to be moved left and right in the inner cavity that power-assisted builds cylinder pressure 5, and master cylinder 6 is connected to power-assisted and builds pressure
The rear portion of cylinder 5, pedal push rod 4 are successively built in cylinder pressure 5 from the inner cavity of screw rod 11 and power-assisted after the front end side wall of shell 10
Chamber passes through, and the rear end of pedal push rod 4 is connected with the second piston 13 in 6 inner cavity of master cylinder, and power-assisted builds first in cylinder pressure 5
Piston 12 is set on pedal push rod 4, and first piston 12 is slidably connected with pedal push rod 4, is opened on the rear portion body of rod of pedal push rod 4
Equipped with oil transportation channel 14, the inner cavity that power-assisted builds cylinder pressure 5 is connected with the inner cavity of master cylinder 6 by the oil transportation channel 14, liquid storage
Tank 7 is connected with the inner cavity of master cylinder 6, and fluid reservoir 7 is that master cylinder 6 provides hydraulic oil, hydraulic control unit 8 also with braking
The inner cavity of master cylinder 6 is connected, and pedal push rod 4, hydraulic control unit 8 and assist motor 3 are connected with electronic control unit 9, automatically controlled
The work of unit 9 control assist motor 3 and hydraulic control unit 8.
The diameter of first gear 1 is less than the diameter of second gear 2, and second gear 2 is fixed on shell by fixed frame 15
In 10 inner cavity, second gear 2 and 15 junction of fixed frame are equipped with bearing 16, and the front end of screw rod 11 is connected with connection frame 17,
The both ends of connection frame 17 are respectively fitted with sliding block 18, and two sliding blocks 18 are respectively sleeved in two guide posts 19, and screw rod 11 is mobile
Sliding block 18 is able to drive in the process to be slided along guide post 19.
The first return spring 20, pedal push rod 4 and electronic control unit 9 are equipped between 10 front end side wall of pedal push rod 4 and shell
Between connection line be equipped with pedal travel sensor 21, pedal travel sensor 21 can be the displacement number of pedal push rod 4
According to being real-time transmitted to electronic control unit 9.
Power-assisted builds in the inner cavity of cylinder pressure 5 and is equipped with the second return spring 22, the second return bullet at the rear portion of first piston 12
Spring set 22 is located on pedal push rod 4.
The front end of 6 inner cavity of master cylinder is equipped with sealing shroud 23, and sealing shroud 23 is set on pedal push rod 4, sealing shroud 23
It is sliding contact between pedal push rod 4, between 13 front end of second piston in 6 inner cavity of rear end and master cylinder of sealing shroud 23
For the first working chamber 24, the inner cavity that power-assisted builds cylinder pressure 5 passes through the oil transportation channel 14 and first opened up on the 4 rear portion body of rod of pedal push rod
Working chamber 24 is connected, and third piston 25 is also equipped in the inner cavity of master cylinder 6, between second piston 13 and third piston 25
It is formed with the second working chamber 26, third return spring 27, the rear end of third piston 25 and braking are equipped in the second working chamber 26
The rear end of 6 inner cavity of master cylinder is formed with third working chamber 28, and the 4th return spring 29, fluid reservoir 7 are equipped in third working chamber 28
It is connected respectively with the second working chamber 26 and third working chamber 28 by pipeline, fluid reservoir 7 is the second working chamber 26 and third work
Make chamber 28 and hydraulic oil is provided, hydraulic control unit 8 is also connected with the second working chamber 26 and third working chamber 28 respectively by pipeline
It is logical.
Hydraulic force snesor 30, hydraulic force snesor are connected on the connecting line of hydraulic control unit 8 and master cylinder 6
30 are connected with electronic control unit 9, and hydraulic force snesor 30 can be oil pressure data real-time transmission to electronic control unit 9, hydraulic control
Unit 8 is also connected with wheel cylinder 31, and hydraulic control unit 8 controls the work of wheel cylinder 31.
Above-mentioned assist motor 3, hydraulic control unit 8, electronic control unit 9, pedal travel sensor 21, hydraulic force snesor
30 and wheel cylinder 31 be existing equipment assembling, therefore, concrete model and specification are not repeated.
The working principle of the invention:
The electric booster braking system that integrated hydraulic power provided by the invention is coupled with mechanical force has electric boosted system
Dynamic, active brake and failure three kinds of operating modes of backup, described in detail below:
One, electric booster braking function:
When system is in electric booster braking mode, driver's brake pedal, pedal push rod 4 overcomes the first return
The resistance of spring 20 is translatable to the right, directly acts on system across shell 10, the inner cavity of lead screw 11, first piston 12 and sealing shroud 23
Second piston 13 in dynamic 6 inner cavity of master cylinder realizes that manpower builds pressure to master cylinder 6.
At the same time, pedal travel sensor 21 collects the displacement of pedal push rod 4, and displacement signal is sent to
Electronic control unit 9, electronic control unit 9 analyze the braking intention of driver according to pedal travel information, calculate required for this braking
Total brake force FS, for new-energy automobile, electronic control unit 9 is according to the work of the power motor of vehicle at this time and battery etc.
State calculates the regenerative braking force F that vehicle at this time can generateR, total brake force FSSubtract regenerative braking force FRObtain this system
Move required hydraulic braking force FH, i.e. FH=FS-FR.Electronic control unit 9 is according to hydraulic braking force FHSize, it is bent to pass through assist characteristic
Line obtains the power-assisted value that assist motor needs, and control instruction is sent to assist motor 3, and assist motor 3 is generated according to instruction
Corresponding revolving speed and torque, 3 output shaft of assist motor drive first gear 1 that second gear 2 is driven to rotate, and second gear 2 rotates
Driving lead screw 11 to be translatable to the right pushes first piston 12 to build cylinder pressure 5 to the power-assisted full of hydraulic oil and build pressure, and lead screw 11 is in Guiding machine
Be translatable but not rotate to the right under the action of structure, hydraulic oil by the oil transportation channel 14 that opens up on the 4 rear portion body of rod of pedal push rod to
First working chamber 24 of the master cylinder 6 full of hydraulic oil builds pressure, pushes second piston 13 to realize that master cylinder 6 is electric boosted and builds
Pressure.
The manpower and motor power-assisted that this process driver's pedal generates coupling in the first working chamber 24 in master cylinder
It closes.
When driver loosens the brake, pedal push rod 4 return, electric boosted machine under the action of the first return spring 20
Structure inverts return by assist motor 3.
Two, active brake function:
For being equipped with the vehicle of velocity sensor, distance measuring sensor device, in the non-brake pedal of driver, i.e.,
Displacement signal is not detected in pedal travel sensor, when vehicle and preceding object are learnt in velocity sensor, distance measuring sensor measurement
Object is apart from too short, it is necessary to which when brake measure being taken to prevent collision or other hazardous acts, electric booster braking system enters
Active brake mode.
Under active brake mode, the signal that electronic control unit 9 transmits other onboard sensors is analyzed, and judges vehicle
Required initiative brake is sent to assist motor 3 by control circuit and is instructed, and assist motor 3 drives the first tooth according to instruction
Wheel 1 drives second gear 2 to rotate, and second gear 2 drives lead screw 11 to be translatable to the right, so that first piston 12 be pushed to build pressure to power-assisted
Cylinder 5 builds pressure, and the oil transportation channel 14 by opening up on the 4 rear portion body of rod of pedal push rod is to the first working chamber 24 in master cylinder 6
Pressure is built, and then second piston 13 is pushed to build pressure to master cylinder 6, realizes the active brake of line traffic control.Under active brake mode,
Once electronic control unit 9 receives the displacement signal of pedal travel sensor 21, system is switched to conventional electric booster braking immediately
Mode.
Three, fail backup functionality:
According to related request, when brake system non-functional or certain brake components break down, braking system is still to guarantee
Certain severity of braking can be generated to guarantee safety and reliability.
The electric booster braking system of no reaction plate partly decoupled provided by the invention is in assist motor 3 or some driving member
It breaks down, when can not work normally electric boosted component.System can enter failure back-up job mode, drive under this mode
Member can push pedal push rod 4 to directly act on second piston 13 by brake pedal, pressure be built to master cylinder 6, to make
Braking system remains to generate certain brake force, realizes failure backup functionality.
Claims (6)
1. a kind of electric booster braking system that integrated hydraulic power is coupled with mechanical force, it is characterised in that: include the first tooth
Wheel, second gear, assist motor, pedal push rod, power-assisted build cylinder pressure, master cylinder, fluid reservoir, hydraulic control unit and automatically controlled list
Member, wherein first gear, second gear, assist motor and power-assisted are built cylinder pressure and are assemblied in a shell, assist motor and the first tooth
Wheel is connected and first gear is driven to be rotated, and first gear, which is meshed with the second gear, drives second gear to rotate synchronously,
Screw rod is bolted among second gear, screw rod is hollow structure, drive screw rod to be moved left and right in second gear rotation process,
The rear end of screw rod is connected with the first piston that power-assisted is built in cylinder pressure, and screw rod can drive first piston to be built in cylinder pressure in power-assisted
It is moved left and right in chamber, master cylinder is connected to the rear portion that power-assisted builds cylinder pressure, after pedal push rod passes through the front end side wall of shell
It is successively passed through from the inner cavity that cylinder pressure is built in the inner cavity of screw rod and power-assisted, the rear end of pedal push rod and second in master cylinder inner cavity live
Plug is connected, and the first piston that power-assisted is built in cylinder pressure is set on pedal push rod, and first piston is slidably connected with pedal push rod, steps on
Offer oil transportation channel on the rear portion body of rod of plate push rod, power-assisted build cylinder pressure inner cavity and master cylinder inner cavity it is logical by the oil transportation
Road is connected, and fluid reservoir is connected with the inner cavity of master cylinder, and fluid reservoir provides hydraulic oil, hydraulic control unit for master cylinder
Also it is connected with the inner cavity of master cylinder, pedal push rod, hydraulic control unit and assist motor are connected with electronic control unit, electricity
Control the work of unit control assist motor and hydraulic control unit.
2. the electric booster braking system that a kind of integrated hydraulic power according to claim 1 is coupled with mechanical force, special
Sign is: the diameter of the first gear is less than the diameter of second gear, and second gear is fixed on shell by fixed frame
Inner cavity in, second gear and fixed frame junction are equipped with bearing, and the front end of screw rod is connected with connection frame, the both ends of connection frame
It is respectively fitted with sliding block, two sliding blocks are respectively sleeved in two guide posts, and sliding block edge is able to drive in screw rod moving process and is led
It is slided to column.
3. the electric booster braking system that a kind of integrated hydraulic power according to claim 1 is coupled with mechanical force, special
Sign is: be equipped with the first return spring between the pedal push rod and housing forward end sidewall, pedal push rod and electronic control unit it
Between connection line be equipped with pedal travel sensor, pedal travel sensor can pass in real time the displacement data of pedal push rod
Give electronic control unit.
4. the electric booster braking system that a kind of integrated hydraulic power according to claim 1 is coupled with mechanical force, special
Sign is: the rear portion that the power-assisted builds in the inner cavity of cylinder pressure in first piston is equipped with the second return spring, the second return bullet
Spring is set on pedal push rod.
5. the electric booster braking system that a kind of integrated hydraulic power according to claim 1 is coupled with mechanical force, special
Sign is: the front end of the master cylinder inner cavity is equipped with sealing shroud, and sealing shroud is set on pedal push rod, sealing shroud with step on
It is sliding contact between plate push rod, works between the second piston front end in the rear end and master cylinder inner cavity of sealing shroud for first
Chamber, the inner cavity that power-assisted builds cylinder pressure are connected with the first working chamber by the oil transportation channel opened up on the body of rod of pedal push rod rear portion, are made
It is also equipped with third piston in the inner cavity of dynamic master cylinder, the second working chamber, the second work are formed between second piston and third piston
To make to be equipped with third return spring in chamber, the rear end of third piston and the rear end of master cylinder inner cavity are formed with third working chamber,
The 4th return spring is equipped in third working chamber, fluid reservoir is connected with the second working chamber and third working chamber respectively by pipeline
Logical, fluid reservoir is the second working chamber and third working chamber provides hydraulic oil, and hydraulic control unit passes through pipeline also respectively with second
Working chamber is connected with third working chamber.
6. the electric booster braking system that a kind of integrated hydraulic power according to claim 1 is coupled with mechanical force, special
Sign is: hydraulic force snesor, hydraulic coupling sensing are connected on the connecting line of the hydraulic control unit and master cylinder
Device is connected with electronic control unit, and hydraulic force snesor can be oil pressure data real-time transmission to electronic control unit, hydraulic control unit
It is also connected with wheel cylinder, hydraulic control unit controls the work of wheel cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439345.XA CN110155013B (en) | 2019-05-24 | 2019-05-24 | Integrated hydraulic and mechanical force coupled electric power-assisted brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439345.XA CN110155013B (en) | 2019-05-24 | 2019-05-24 | Integrated hydraulic and mechanical force coupled electric power-assisted brake system |
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| Publication Number | Publication Date |
|---|---|
| CN110155013A true CN110155013A (en) | 2019-08-23 |
| CN110155013B CN110155013B (en) | 2020-02-28 |
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| CN201910439345.XA Active CN110155013B (en) | 2019-05-24 | 2019-05-24 | Integrated hydraulic and mechanical force coupled electric power-assisted brake system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562228A (en) * | 2019-09-10 | 2019-12-13 | 武汉理工大学 | Electric hydraulic power-assisted brake system of automobile |
| CN110576842A (en) * | 2019-09-02 | 2019-12-17 | 上海联芊电子科技有限公司 | brake booster unit, braking system and vehicle |
| CN111634191A (en) * | 2020-05-08 | 2020-09-08 | 烟台工程职业技术学院(烟台市技师学院) | Automobile braking energy recycling device for transportation |
| CN112253571A (en) * | 2020-09-22 | 2021-01-22 | 北京精密机电控制设备研究所 | Electromechanical actuator for realizing full-scale, non-full-scale or follow-up function after lead screw is clamped |
| CN113682285A (en) * | 2020-05-18 | 2021-11-23 | 现代自动车株式会社 | Electric booster for autonomous vehicle with dual actuators |
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| CN112253571B (en) * | 2020-09-22 | 2023-09-29 | 北京精密机电控制设备研究所 | Electromechanical actuator for realizing full-scale, non-full-scale or follow-up function after screw rod is blocked |
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