CN108482352A - Hydraulic booster system - Google Patents
Hydraulic booster system Download PDFInfo
- Publication number
- CN108482352A CN108482352A CN201810493841.9A CN201810493841A CN108482352A CN 108482352 A CN108482352 A CN 108482352A CN 201810493841 A CN201810493841 A CN 201810493841A CN 108482352 A CN108482352 A CN 108482352A
- Authority
- CN
- China
- Prior art keywords
- piston
- push rod
- type push
- pressure
- pressure chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 86
- 238000007789 sealing Methods 0.000 claims description 33
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
- 210000002421 cell wall Anatomy 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/12—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 fluid assistance, drive, or release the fluid being liquid
- B60T13/14—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 fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The present invention provides a kind of hydraulic booster system, the cylinder body for filling brake fluid including one, cylinder body have set gradually first piston component, guide holder, second piston component, third piston from cylinder mouth to cylinder bottom and will be divided into First pressure chamber, second pressure chamber and two master cylinders in cylinder body；The second piston and T-type push rod of the inner cavity full of brake fluid are provided in second piston component, T-type push rod extends into first pressure intracavitary from second piston inner cavity, T-type push rod center is provided with the through-hole being connected to First pressure chamber, and an access is set in second piston wall, inner cavity is set to be connected to second pressure chamber, when driving unit fails, trampling brake pedal makes first piston components drive T-type push rod leave second piston wall and push second piston, First pressure chamber is connected to second pressure chamber, the hydraulic pressure release of first pressure intracavitary.Solenoid valve is not used in the present invention, is realized using only the mechanical structure and hydraulic pressure of itself and builds pressure, the function of pressure release rapidly under hydraulic booster and failure mode.
Description
Technical field
The present invention relates to automobile brake force aid system field more particularly to a kind of hydraulic booster systems.
Background technology
With the development of automotive engineering, ride safety of automobile is increasingly taken seriously, and traditional braking system is by true
The brake force of empty booster amplification driver, realizes braking.Vacuum servo needs engine to provide vacuum source, for electric vehicle or
New energy vehicle, it is also necessary to install vacuum pump.With the development of technology, electro-hydraulic brake booster is constantly started by each producer
Research and development so that the braking of automobile eliminates the reliance on engine or vacuum pump, and can realize brake-by-wire.
For the research and development of electro-hydraulic brake booster and manufacture, need to consider to break down in deceleration of electrons to fail
When, hydraulic braking can be directly switched to maintain braking system normal operation.Since this kind of product can be equipped with hydraulic pressure pedal
Simulator, the pedal sense for simulating traditional vacuum booster typically control hydraulic channel by using solenoid valve
Opening and closing, the hydraulic pressure in simulator of releasing the pedal when deceleration of electrons is failed, when reducing deceleration of electrons failure in this way
Driver's foot steps on the resistance encountered when hydraulic braking.
201110289573.7 (the applying date of Chinese patent：On June 27th, 2011, publication date：On June 20th, 2012, application
Publication number：CN102501841 a kind of manipulation unit and its operating method for brake fluid system) is disclosed, disclosed in
Include brake pressure generator and for the manipulation chamber for brake pressure generator for brake fluid system manipulation unit
The pressure control device that interior pressure is adjusted, wherein pressure control device are hydraulically connected with brake pressure generator, pressure
Force control device has at least one first switching valve and at least one first regulating valve, and intracavitary foundation is being manipulated using them
Pressure is played, also there is at least one second switching valve and at least one second regulating valve, the pressure of intracavitary will be manipulated using them
Power removal.The pressure in brake fluid system is adjusted using pressure control device and brake pressure generator in this way, for adjusting
The whole pressure control device for manipulating cavity pressure can be used for setting up the brake force of automobile, and be unloaded using the second regulating valve
Pressure, but has used a large amount of solenoid valve in the patent, since the comparison of solenoid valve at home is difficult, the excellent electromagnetism of quality
Valve higher price, thus how to develop it is a kind of not only without solenoid valve but also can meet above-mentioned function hydraulic booster structure become ability
Field technique personnel technical problem urgently to be resolved hurrily.
Invention content
The present invention provides a kind of hydraulic booster system, does not use solenoid valve, only leans on the mechanical structure of itself and hydraulic pressure full
Pressure and the function of pressure release are built rapidly under the above-mentioned hydraulic booster of foot and failure mode, to solve the above problems.
In order to achieve the above objectives, the present invention provides a kind of hydraulic booster system, including one fill brake fluid cylinder body, institute
It states cylinder body and has set gradually first piston component, guide holder, second piston component, third piston and will be described from cylinder mouth to cylinder bottom
Space in cylinder body is divided into First pressure chamber between the first piston component and the guide holder, is led positioned at described
To between seat and the second piston component and be connected to fluid reservoir second pressure chamber, be located at the second piston component and institute
State the first master cylinder chamber between third piston, the second master cylinder chamber between the third piston and cylinder bottom；
The first piston component is contacted with brake pedal, and the first master cylinder chamber and the second master cylinder chamber and braking system connect
It connects and drives the braking system；
The second piston component includes second piston and T-type push rod with the inner cavity full of brake fluid, and the T-type pushes away
Bar sequentially passes through the second piston wall, the guide holder along the cylinder length direction from the second piston inner cavity and extends
Into the first pressure intracavitary, T-type push rod center is provided through the T-type push rod and makes the inner cavity and described the
The through-hole of one pressure chamber connection, is in series between the second pressure chamber and fluid reservoir for making the liquid flow in the fluid reservoir
Enter the driving unit of the second pressure intracavitary；
One access is set in the second piston wall, so that the inner cavity is connected to the second pressure chamber, the T-type push rod
Both shoulders are covered in the opening of the access to block the access, when the T-type push rod leaves the opening of the access, institute
Inner cavity is stated to be connected to second pressure chamber recovery.
Preferably, the interior intracavitary of the second piston is provided with piston inner prop, the piston inner prop is from far from the T-type
The second piston wall of push rod extends to the T-type push rod, and be connected to inner cavity in the end set close to the T-type push rod
Cross recess, the cross recess is perpendicular to the cylinder length direction, the through-hole of the T-type push rod and the cross recess position
Set correspondence.
Preferably, the first pressure intracavitary is provided with the first spring, first bullet along the cylinder length direction
Intracavitary is provided with spring between the guide holder and the first piston component, in the second piston is set in the piston
Second spring on inner prop, described second spring one end are contacted with the second piston wall contact other end with the T-type push rod.
Preferably, the through-hole extends along the cylinder length direction, the first piston component and the T-type push rod
The end of contact has opened up at least two interconnected endoporus, the lead to the hole site pair of one of endoporus and the T-type push rod
It answers, is defined as central bore, when the first piston component and T-type push rod contact, in the through-hole and the center
Hole is docked, and the brake fluid passes sequentially through remaining described endoporus, the central bore enters in the through-hole.
Preferably, the first piston component includes the first piston and spring base to contact with each other, the first piston
Input push rod is provided between the brake pedal, the input push rod is contacted with the brake pedal, and the endoporus opens up
In the spring base end.
Preferably, the spring base has the cavity towards the T-type push rod, the cavity bottom is pushed away to the T-type
Bar direction extends to form spring pedestal pillar, and spring pedestal pillar end face offers the endoporus, and the central bore is long
Degree be parallel to the cylinder length direction, remaining described endoporus around the central bore it is symmetrical and with it is described center in
Hole forms acute angle.
Preferably, the access of the second piston wall is provided with valve in the opening covered by the T-type push rod both shoulders
Block, the switch contact of the both shoulders and the valve block of the T-type push rod, when the both shoulders of the T-type push rod leave the valve block, valve
Block is in the open state, and when the both shoulders of the T-type push rod are contacted with the valve block, valve block is closed.
Preferably, being arranged with one first sealing ring outside the first piston component, the inner wall setting of the cylinder body is useful
In the receiving annular groove for accommodating first sealing ring, the width for accommodating annular groove width and being more than first sealing ring is described
It accommodates and offers the fluid path hole being connected to the fluid reservoir on annular groove, when the first piston component is along the cylinder length direction
When mobile, first sealing ring is moved at the fluid path hole and blocks the fluid path hole, when the first piston component after
When continuous mobile, the receiving annular groove cell wall stops that first sealing ring continues to move to so that the fluid path hole still keeps blocking shape
State.
Preferably, the pedal simulator that the First pressure chamber is also located at one outside the cylinder body is connect, described the
One master cylinder chamber and the second master cylinder chamber are all connect with the fluid reservoir fluid path.
Preferably, have gap between the second piston and the inboard wall of cylinder block, when the T-type push rod leave it is described
When passage opening, the brake fluid of the interior intracavitary is flowed by access in the gap, the gap and the driving unit liquid
Road connects.
Compared with prior art, beneficial effects of the present invention are：In hydraulic booster system provided by the invention, including a note
The cylinder body of full brake fluid, which is characterized in that the cylinder body from cylinder mouth to cylinder bottom set gradually first piston component, guide holder,
Space in the cylinder body is simultaneously divided into positioned at the first piston component and the guiding by second piston component, third piston
Seat between First pressure chamber, between the guide holder and the second piston component and be connected to fluid reservoir second press
Power chamber, is located at the third piston and cylinder at the first master cylinder chamber between the second piston component and the third piston
The second master cylinder chamber between bottom；
The first piston component is contacted with brake pedal, and braking system and the first master cylinder chamber and the second master cylinder chamber are all
Connection is in series with the driving list for making the liquid in fluid reservoir flow into second pressure intracavitary between second pressure chamber and fluid reservoir
Member；
The second piston and T-type push rod of the inner cavity full of brake fluid are provided in second piston component, T-type push rod is from second
Piston cavity sequentially passes through second piston wall, guide holder along cylinder length direction and extends into first pressure intracavitary, T-type push rod
Center is provided through the through-hole that T-type push rod makes inner cavity be connected to First pressure chamber, and setting one is logical in second piston wall
Road makes inner cavity be connected to second pressure chamber, and thus the brake fluid for first pressure intracavitary flows to second pressure chamber and provides
Path, but under non-failed pattern, the hydraulic pressure of first pressure intracavitary is without release, therefore T-type push rod both shoulders are covered in access
Opening is to block access so that First pressure chamber and second pressure chamber temporarily completely cut off, and when only driving unit fails, just use
First piston components drive T-type push rod pushes second piston, when T-type push rod leaves the opening of access, inner cavity and the second pressure
Power chamber restores connection, so that the brake fluid of first pressure intracavitary flows into second pressure chamber.
When driving unit does not fail, driving unit drives the brake fluid of fluid reservoir or driving unit itself to flow into second
The hydraulic-driven second piston of pressure chamber, second pressure intracavitary is moved to third piston direction so that third piston receives hydraulic pressure
It moves, to drive braking system；When driving unit fails, tramples brake pedal and make first piston component and T
Type push rod contacts so that T-type push rod leaves second piston wall and pushes second piston so that first master cylinder chamber the first master cylinder chamber chamber
Interior hydraulic pressure increase pushes the movement of third piston to hydraulic driving system, after T-type push rod leaves second piston wall, first pressure
The brake fluid of intracavitary passes back into fluid reservoir after passing sequentially through through-hole in T-type push rod, the access of second piston wall, second pressure chamber
It is interior, so that the hydraulic pressure of first pressure intracavitary is discharged.This pressure release mode rapid and convenient, once T-type push rod leaves second piston wall, then
First pressure chamber is connected at once with second pressure chamber, and the hydraulic pressure of first pressure intracavitary can discharge rapidly, and first piston component is to T
Flowed friction is reduced at once when type push rod promotes, and can remain able to start braking system rapidly under failure mode, and this
Solenoid valve is invented and be not used, realizes using only the mechanical structure and hydraulic pressure of itself and is built rapidly under hydraulic booster and failure mode
Pressure, the function of pressure release.
Description of the drawings
Fig. 1 is hydraulic booster system sectional view provided by the invention；
Fig. 2 is that brake fluid moves towards schematic diagram in hydraulic booster system under non-failed pattern provided by the invention；
Fig. 3 is that brake fluid moves towards schematic diagram in hydraulic booster system under failure mode provided by the invention；
Fig. 4 is the visual angles A-A schematic diagram in Fig. 1.
In figure：1- First pressure chambers, 2- second pressures chamber, the first master cylinders of 3- chamber, the second master cylinders of 4- chamber, 5- braking systems；
100- brake pedals, 200- fluid reservoirs, 300- cylinder bodies, 310- accommodate annular groove, 311- fluid path hole, 320- openings；
400- first pistons component, 410- first pistons, 420- inputs push rod, 430- spring bases, 431- spring pedestals are convex
Column, 4311- endoporus, 43111- central bores, the first sealing rings of 440-, the first springs of 450-；
500- guide holders, 510- guide holder O-rings；
600- second pistons component, 610- second pistons, 611- pistons inner prop, 6111- cross recess, the second bullets of 612-
Spring, 613- circular holes, the inner cavities 614-, 620- valve blocks, 630- clamp springs, the second sealing rings of 640-, 650- thirds sealing ring, 660-T types
Push rod, 661- through-holes；
700- thirds piston, 800- driving units, 900- pedal simulators.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.
Please refer to Fig. 1 to Fig. 2, the present invention provides a kind of hydraulic booster system, including one fill brake fluid cylinder body
300, in the present embodiment, cylinder body 300 is cuboid or cylindrical shape, laterally disposed, that is to say, that its length direction is
Laterally, the cylinder body 300 has set gradually first piston component 400, guide holder 500, second piston component from cylinder mouth to cylinder bottom
600 and third piston 700, the space in the cylinder body 300 is divided into positioned at the first piston component 400 and the guiding
Seat 500 between First pressure chamber 1, positioned at the guide holder 500 and the second piston component 600 between simultaneously and fluid reservoir
Second pressure chamber 2, the first master cylinder chamber between the second piston component 600 and the third piston 700 of 200 connections
3, the second master cylinder chamber 4. between the third piston 700 and cylinder bottom
Specifically, the first piston component 400 is contacted with brake pedal 100, and first piston component 400 includes being located at cylinder
The first piston 410 of mouth, and the bullet for being located at first piston 410 close to 660 side of T-type push rod is in close contact with first piston 410
Spring abutment 430, first piston 410 are provided with the pit towards brake pedal 100, which is connected to outside air, therefore is free of
There is brake fluid, there is input push rod 420, the input push rod one end to be contacted with pit bottom, the other end is then stepped on braking in pit
Plate 100 contacts, and when people tramples brake pedal 100, brake pedal 100 pushes input push rod 420, to push first piston
410 move to cylinder bottom direction；In another embodiment of the invention, first piston 410 is not provided with pit, inputs push rod 420
Between first piston 410 and brake pedal 100；
In one more embodiment of the present invention, first piston 410 is additionally provided with limiting device so that first piston 410 limits
Position keeps brake pedal 100 to be fixed on the state of zero-bit on a certain fixed position；
Spring base 430 is provided with the cavity towards T-type push rod 660, and the first spring 450 is arranged in guide holder 500 and cavity
Between bottom, when 410 push the spring seat 430 of first piston is moved to 660 direction of T-type push rod, the first spring 450 gives spring
430 resistances of seat, prevent spring base 430 and T-type push rod 660 from contacting, and the bottom center of 430 cavity of spring base is to 660 side of T-type push rod
To a spring pedestal pillar 431 is extended, the height of the spring pedestal pillar 431 is equal to or less than the depth of cavity, T-type
There are the distances that one section is more than zero between 431 end of push rod 660 and spring pedestal pillar so that under non-failed pattern, first
Under flowed friction in the resistance and First pressure chamber 1 of spring 450, spring pedestal pillar 431 and 660 end of T-type push rod can not
Contact；
In at least two endoporus 4311 of end set of spring pedestal pillar 431, it is provided with three in the present embodiment,
In another embodiment be provided with five, wherein there are one 4311 length of endoporus it is parallel with 300 length direction of cylinder body, position and
661 position of through-hole in T-type push rod 660 corresponds to, and is defined as central bore 43111, remaining endoporus 4311 surrounds central bore
43111 is symmetrical, and all endoporus 4311 all communicate, in this way the folder of remaining endoporus 4311 and central bore 43111
Angle is acute angle, and after central bore 43111 is docked with the through-hole 661 of T-type push rod 660, the brake fluid in First pressure chamber 1 passes through
Remaining endoporus 4311 flows into central bore 43111, enters back into through-hole 661；
It is arranged with the first sealing ring 440 on first piston component 400, correspondingly, is provided on cylinder wall for accommodating
The receiving annular groove 310 of first sealing ring 440, the width of the receiving annular groove 310 are more than the width of the first sealing ring 440 so that the
One sealing ring 440 has mobile space in receiving annular groove 310, and fluid path hole is offered on accommodating 310 slot bottom of annular groove or cell wall
311, which connect with 200 fluid path of fluid reservoir, that is to say, that brake fluid in fluid reservoir 200 via fluid path hole 311 into
Enter in First pressure chamber 1；Preferably, brake fluid leaks in fluid path hole 311 in order to prevent, in 440 periphery of the first sealing ring
It is arranged one layer of the 4th sealing ring again；
If the fluid path hole 311 is less than the width of the first sealing ring 440 at a distance from the cell wall close to 660 side of T-type push rod,
So when first piston component 400 is pushed to 660 direction of T-type push rod, the first sealing ring 440 is stopped by cell wall, is located at
311 lower section of fluid path hole so that fluid path hole 311 blocks, and can not supplement brake fluid again in First pressure chamber 1 at this time, work as first piston
Component 400 continues to move to 660 direction of T-type push rod, and the first sealing ring 440 is still stopped by cell wall so that fluid path hole 311 is still
In sealed condition；If fluid path hole 311 and the width for being more than the first sealing ring 440 far from the cell wall distance of 660 side of T-type push rod
Degree, then when first piston component 400 is pushed to 660 direction of T-type push rod, although fluid path hole 311 will not be by the first sealing ring
After 440 block, but the brake fluid in fluid reservoir 200 flows through fluid path hole 311 at this time, since the blocking of the first sealing ring 440 can not
It flows into First pressure chamber 1, similarly plays the effect for not being further added by hydraulic pressure in First pressure chamber 1 in this way；
It is also connect with pedal simulator 900 in First pressure chamber 1, when driver tramples brake pedal 100, with brake pedal
The 100 input push rods 420 being in contact push first piston 410, first piston 410 to cross the fluid path hole 311 on cylinder body 300 therewith
Afterwards, start slowly to build pressure in First pressure chamber 1, can also establish pressure inside the pedal simulator 900 being attached thereto, at the same time
It has on feedback force to brake pedal 100, gives driver feedback pedal sense.
Guide holder 500 is fixed in second pressure chamber 2, in the width direction of cylinder body 300, that is, perpendicular to cylinder body
On 300 length directions, the length of second pressure chamber 2 is more than First pressure chamber 1 in the length that this side up, it may also be said to, second
The wall thickness of the cylinder body 300 of pressure chamber 2 is less than the wall thickness of cylinder body 300 at First pressure chamber 1, and guide holder 500 is in the length that this side up
Degree is less than or equal to second pressure chamber 2 in the length that this side up, and guide holder 500 contacts place with 2 cavity wall of second pressure chamber
Provided with guide holder clamp spring (not shown), guide holder clamp spring makes guide holder 500 be fixed on second pressure chamber 2 close to first pressure
In place of the cavity wall of chamber 1, in the present embodiment, the width of guide holder 500 makes First pressure chamber more than the width of First pressure chamber 1
1 and second pressure chamber 2 completely cut off；
T-type push rod 660 is provided with guide holder O-ring 510, T-type pushes away when through guide holder 500 inside guide holder 500
Bar 660 is inserted in guide holder O-ring 510, and the bit space that allows for accommodating guide holder O-ring 510 correspondingly, in guide holder 500 is arranged；
Cylinder wall on second pressure chamber 2 offers opening 320, and opening 320 is connected to driving unit 800, does not step on braking
When pedal 100, driving unit 800 is connected to fluid reservoir 200, and when stepping on brake pedal 100, driving unit 800 moves forward, when
When driving unit 800 fails, driving unit 800 is in original state again namely does not step on the state of brake pedal 100, drives at this time
Moving cell 800 is connected to fluid reservoir 200.
For one by motor-driven hydraulic pump, motor is controlled driving unit 800 by ECU.
Second piston component 600 includes the second piston 610 and T-type push rod 660 for having the inner cavity 614 full of brake fluid,
The T-type push rod 660 sequentially passes through described second along 300 length direction of the cylinder body from 610 inner cavity 614 of the second piston and lives
Plug wall, the guide holder 500 simultaneously extend into the First pressure chamber 1, and 660 center of T-type push rod is provided through institute
T-type push rod 660 is stated so that the through-hole 661 that inner cavity 614 is connected to the First pressure chamber 1, the through-hole 661 is along the cylinder body
300 length directions extend, and position is corresponding with 43111 position of central bore, it is coaxial with central bore 43111 in other words；
One access is set in second piston wall, so that the inner cavity 614 is connected to the second pressure chamber 2, the T-type push rod
660 both shoulders are covered in the opening of the access to block the access, when the T-type push rod 660 leaves opening for the access
When mouth, the inner cavity 614 is connected to the second pressure chamber 2 recovery；
Specifically, the second piston wall close to guide holder 500 has opened up a circular hole 613, the circular hole 613 and second pressure chamber
2 connections, 613 bottom hole diameter of circular hole reduce to form another hole, and the valve block 620 of circular ring shape, T-type push rod 660 are placed in the hole
Hole across valve block 620, valve block 620 and 613 bottom of circular hole pad set clamp spring 630, and 660 both shoulders of T-type push rod are covered in valve block
On 620, pad sets the second sealing ring 640 between the two so that shape between T-type push rod 660, the second sealing ring 640 and valve block 620
At a sealing surface；Preferably, in an embodiment of the present invention, valve block 620 is also provided with limiting device, but does not go to live in the household of one's in-laws on getting married herein
It states；
The switch contact of the T-type push rod 600 and the valve block 620, when the T-type push rod 660 leaves the valve block 620
When, valve block 620 is in the open state, and when the T-type push rod 660 is contacted with the valve block 620, valve block 620, which is in, closes shape
State, or can also this function setting other structures so that T-type push rod 660 is left valve block 620 and is turned on valve block 620, cover valve
Block 620 is shut off valve block 620；
Preferably, being provided with piston inner prop 611, the piston inner prop 611 in the inner cavity 614 of the second piston 610
Extend from T-type push rod 660 described in the second piston wall mediad far from the T-type push rod 660, and close to the T-type push rod
660 end set is connected to cross recess 6111 with inner cavity 614, please refers to Fig. 4, the cross recess 6111 is perpendicular to described
The through-hole 661 of 300 length direction of cylinder body, the T-type push rod 600 is connected to the cross recess 6111, that is to say, that the cross
Center and 661 central axis of through-hole of groove 6111, when T-type push rod 600 is contacted with piston inner prop 611, through-hole 661 and ten
Word groove 6111 docks, and the brake fluid in through-hole 661 flows into cross recess 6111, and to flow into inner cavity 614, described second lives
Fill in the second spring 612 for being provided with and being set on the piston inner prop 611 in 610 inner cavities 614,612 one end of the second spring
It is contacted with the end where 660 both shoulders of T-type push rod with the second piston wall contact other end, due to second spring 612
Resistance, so T-type push rod 660 will not generally be docked with cross recess 6111, only when T-type push rod 660 pushes second spring
612 make its shrink it is isometric as piston inner prop 611 when, 660 end of T-type push rod can just be contacted with piston inner prop 611；
Preferably, being also provided with third sealing ring 650 between 614 wall of inner cavity and valve block 620, it is maintained at non-failed pattern
Under, the isolation between inner cavity 614 and second pressure chamber 2；
Preferably, having gap between 300 inner wall of the second piston 610 and the cylinder body, this gap is exactly to belong to
In a part for second pressure chamber 2, when the both shoulders of the T-type push rod 600 leave the valve block 620, in the inner cavity 614
Brake fluid enters after flowing into circular hole 613 by open valve block 620 in the gap, this gap makes the flowing speed of brake fluid
Degree increases, and improves the reaction speed of whole system.
First master cylinder chamber 3 and the second master cylinder chamber 4 are all connect with braking system 5, the third piston 400 and second piston
610 movement all can hydraulic driving system 5, the first master cylinder chamber 3 and the second master cylinder chamber 4 are all connect with 200 fluid path of fluid reservoir.
Fig. 2 is please referred to, under non-failed pattern, driver tramples brake pedal 100, is connected with brake pedal 100 defeated
Enter after push rod 420 pushes first piston 410, first piston 410 to cross the fluid path hole 311 on cylinder body 300 therewith, First pressure chamber
Start slowly to build pressure in 1, can also establish pressure inside the pedal simulator 900 being attached thereto, at the same time have feedback force and arrive
On brake pedal 100, driver feedback pedal sense is given；
For spring base 430 because being pressed on first piston 410 by the first spring 450, spring base 430 also can be with first piston
410 movements, since there are distances, the two to contact between spring base 430 and T-type push rod 660；At the same time, driving is single
Member 800 can establish phase after receiving the signal that brake pedal 100 is trampled according to actual conditions (speed of driver and stroke)
The hydraulic pressure answered is transmitted in second pressure chamber 2, by above-mentioned, in second pressure chamber 2 hydraulic pressure rise, can push second piston 610 to
700 direction of third piston is moved, and T-type push rod 660 is located in 610 inner cavity 614 of second piston, and second piston wall can push T-type to push away
Bar 660 is so that T-type push rod 660 moves therewith, via logic control, it is ensured that under brake condition, spring base 430 and T-type push rod 660
Always will not touch, the both shoulders of T-type push rod 660 will not leave valve block 620 so that valve block 620 will not be opened, First pressure chamber 1 with
Second pressure chamber 2 remains isolation.Second piston 610 is mobile into the first master cylinder chamber 3 so that 3 hydraulic pressure of the first master cylinder chamber increases
Greatly, third piston 700, the other elements being then passed in outer brake system 5 is pushed to start in ABS/ESP/ clamp
Braking system 5.
Sometimes the braking of electro-hydraulic force aid system is believed not instead of by stepping on brake pedal 100 by automobile external
Number directly notice 800 motor of driving unit work establishes pressure and pushes second piston 610, to push third piston 700 to move
To start braking system 5 (being equivalent to automatic Pilot), 800 motor of driving unit how directly to be notified to work by external signal
For prior art processes, it is not belonging to the art of this patent scheme and tells about range, be not added with repeat herein.
Fig. 3 is please referred to, under failure mode, the present embodiment refers to driving unit 800 because failure can not start foundation
Pressure is needed to trample brake pedal 100 by driver namely directly be braked by manpower, and the resistance encountered at this time is smaller
It is better, laws and regulations requirement could be met, ensure the safety of driver, and while due to stepping on brake pedal 100, First pressure chamber
1 can also establish pressure, it is therefore necessary to discharge the hydraulic pressure of First pressure chamber 1.
Pedal force is transmitted to spring base 430, because of driving unit by inputting push rod 420, first piston 410 when braking
800 do not build pressure, and internal no pressure, T-type push rod 660 are not moved to 700 direction of third piston second pressure chamber 2 at this time, so
Spring base 430 and the gap of T-type push rod 660 can be gradually reduced, and hydraulic pressure is had in First pressure chamber 1 and pedal simulator 900
It generates, forms the resistance to people；
When spring base 430 is contacted with T-type push rod 660, power can be directly delivered on T-type push rod 660, and T-type pushes away at this time
The through-hole 661 of bar 660 is docked with the central bore 43111 of spring pedestal pillar 431, and the brake fluid in First pressure chamber 1 passes through
Endoporus 4311 keeps and is kept unimpeded inside 660 through-hole 661 of T-type push rod；Pedal force continues to increase, and T-type push rod 660 overcomes
The both shoulders of the spring force of two springs 612, T-type push rod 660 leave valve block 620 so that the both shoulders of T-type push rod 660 and the second sealing
Circle 640, valve block 620 are formed by sealing surface and will open, and the brake fluid in First pressure chamber 1 flows into inner cavity 614 by through-hole 661
Interior, the brake fluid in inner cavity 614 flows through the valve block 620 being opened, circular hole 613 enters in gap i.e. second pressure chamber 2, from
And First pressure chamber 1 is connected to second pressure chamber 2；Due to having hydraulic pressure, liquid in First pressure chamber 1 and pedal simulator 900 at this time
Pressure will be released back to via second pressure chamber 2 and driving unit 800 in fluid reservoir 200 by the channel of above-mentioned formation, this
Sample only has spring force and frictional force to the resistance of people, without flowed friction, can continue to press on the Forward of second piston 610,
Start to generate hydraulic pressure in the first master cylinder chamber 3, the second master cylinder chamber 4.
With continuing to promote, T-type push rod 660 pushes second spring 612 so that 612 length of second spring is equal in piston
Column 611, T-type push rod 660 can touch the piston inner prop 611 of second piston 610, and through-hole 661 is docked with cross recess 6111, lead to
Brake fluid in hole 661 flows through cross recess 6111 and enters inner cavity 614, is continued to reduce second spring 612 to the greatest extent in this way
The additional friction generated is compressed, cross recess 6111 as shown in Figure 4 ensures to make after T-type push rod 660 is contacted with piston inner prop 611
Hydrodynamic still can be unimpeded.
When release, acted on by 612 spring force of second spring, T-type push rod 660 can be pushed to both shoulders and be covered in valve block
On 620, sealing surface can be formed again between 660 both shoulders of T-type push rod, the second sealing ring 640 and valve block 620, completely cuts off first again
Pressure chamber 1 and second pressure chamber 2.
This pressure release mode rapid and convenient, once T-type push rod 660 leaves second piston wall, then First pressure chamber 1 and second
Pressure chamber 2 is connected at once, and the hydraulic pressure in First pressure chamber 1 can discharge rapidly, and first piston component 400 is pushed away to T-type push rod 660
Into when flowed friction reduce at once, can remain able to start braking system 5 rapidly under failure mode, and the present invention is not
Using solenoid valve, realizes using only the mechanical structure and hydraulic pressure of itself and to build pressure, pressure release under hydraulic booster and failure mode rapidly
Function.
Obviously, those skilled in the art can carry out invention spirit of the various modification and variations without departing from the present invention
And range.If these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology, this
Invention is also intended to including these modification and variations.
Claims (10)
1. a kind of hydraulic booster system, including one fill brake fluid cylinder body, which is characterized in that the cylinder body is from cylinder mouth to cylinder bottom
It has set gradually first piston component, guide holder, second piston component, third piston and has been divided into the space in the cylinder body
First pressure chamber between the first piston component and the guide holder is located at the guide holder and the second piston
The second pressure chamber being connected between component and with fluid reservoir, between the second piston component and the third piston
One master cylinder chamber, the second master cylinder chamber between the third piston and cylinder bottom；
The first piston component is contacted with brake pedal, and the first master cylinder chamber and the second master cylinder chamber connect simultaneously with braking system
Drive the braking system；
The second piston component include with full of brake fluid inner cavity second piston and T-type push rod, the T-type push rod from
The second piston inner cavity sequentially passes through second piston wall, the guide holder along the cylinder length direction and extends into described
First pressure intracavitary, T-type push rod center are provided through the T-type push rod and make the inner cavity and the First pressure chamber
The through-hole of connection is in series between the second pressure chamber and fluid reservoir for making liquid in the fluid reservoir flow into described the
Driving unit in two pressure chambers；
One access is set in the second piston wall, so that the inner cavity is connected to the second pressure chamber, the T-type push rod both shoulders
The opening of the access is covered in block the access, when the T-type push rod leaves the opening of the access, it is described in
Chamber is connected to second pressure chamber recovery.
2. hydraulic booster system as described in claim 1, which is characterized in that the interior intracavitary of the second piston is provided with piston
Inner prop, the piston inner prop are extended to form from the second piston wall far from the T-type push rod to the T-type push rod, and close
The end set of the T-type push rod cross recess being connected to inner cavity, the cross recess is perpendicular to the cylinder body length side
To the through-hole of the T-type push rod is corresponding with the cross recess position.
3. hydraulic booster system as claimed in claim 2, which is characterized in that the first pressure intracavitary is along the cylinder body length
Direction is provided with the first spring, and first spring is between the guide holder and the first piston component, and described second
The second spring being set on the piston inner prop, described second spring one end and the second piston are provided in piston cavity
Wall contacts, and the other end is contacted with the T-type push rod.
4. hydraulic booster system as described in claim 1, which is characterized in that the through-hole prolongs along the cylinder length direction
It stretches, the end that the first piston component is contacted with the T-type push rod has opened up at least two interconnected endoporus, wherein one
A endoporus is corresponding with the lead to the hole site of T-type push rod, is defined as central bore, when the first piston component and the T-type
Push rod contact when, the through-hole is docked with the central bore, the brake fluid pass sequentially through remaining described endoporus, it is described in
Endoporus is entreated to enter in the through-hole.
5. hydraulic booster system as claimed in claim 4, which is characterized in that the first piston component includes contacting with each other
First piston and spring base, the first piston have the pit towards the brake pedal, input are provided in the pit
Push rod, the input push rod are contacted with the brake pedal, and the endoporus is opened in the spring base end.
6. hydraulic booster system as claimed in claim 5, which is characterized in that the spring base has towards the T-type push rod
Cavity, the spring pedestal pillar that the cavity bottom is extended to form to T-type push rod direction, spring pedestal pillar end
Face offers the endoporus, and the central bore length is parallel to the cylinder length direction, remaining described endoporus surrounds institute
State central bore it is symmetrical and with the central bore formed acute angle.
7. hydraulic booster system as described in claim 1, which is characterized in that the access of the second piston wall is by the T
The opening of type push rod both shoulders covering is provided with valve block, the switch contact of the both shoulders and the valve block of the T-type push rod, when described
When the both shoulders of T-type push rod leave the valve block, valve block is in the open state, when both shoulders and the valve block of the T-type push rod connect
When touching, valve block is closed.
8. hydraulic booster system as described in claim 1, which is characterized in that be arranged with one first outside the first piston component
Sealing ring, the inner wall of the cylinder body are provided with the receiving annular groove for accommodating first sealing ring, the receiving annular groove width
More than the width of first sealing ring, the fluid path hole being connected to the fluid reservoir is offered on the receiving annular groove, when described
When first piston component is moved along the cylinder length direction, first sealing ring is moved at the fluid path hole and blocks institute
Fluid path hole is stated, when the first piston component continues to move to, the receiving annular groove cell wall stops that first sealing ring continues
It is mobile that the fluid path hole is made still to keep sealed condition.
9. the hydraulic booster system as described in right wants 1, which is characterized in that the First pressure chamber is also located at the cylinder body with one
External pedal simulator connection, the first master cylinder chamber and the second master cylinder chamber are all connect with the fluid reservoir fluid path.
10. the hydraulic booster system as described in right wants 1, which is characterized in that have between the second piston and inboard wall of cylinder block
Gap, when the T-type push rod leaves the passage opening, the brake fluid of the interior intracavitary flows into the gap by access
Interior, the gap is connect with the driving unit fluid path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493841.9A CN108482352B (en) | 2018-05-22 | Hydraulic power assisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493841.9A CN108482352B (en) | 2018-05-22 | Hydraulic power assisting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108482352A true CN108482352A (en) | 2018-09-04 |
| CN108482352B CN108482352B (en) | 2024-05-17 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61175163A (en) * | 1985-01-25 | 1986-08-06 | アルフレツド・テグエス・ゲーエムベーハー | Hydraulic brake gear |
| CN101332811A (en) * | 2007-05-21 | 2008-12-31 | 罗伯特博世有限公司 | Master cylinder comprising a seal for helping the feedback |
| US20150000266A1 (en) * | 2013-06-28 | 2015-01-01 | Denso Corporation | Brake system for vehicle designed to improve mountability |
| WO2015177207A1 (en) * | 2014-05-20 | 2015-11-26 | Ipgate Ag | Actuating system for a vehicle brake and method of operating the actuating system |
| CN106218619A (en) * | 2016-08-30 | 2016-12-14 | 邓伟文 | A kind of electro-hydraulic servo brakes with multiple-working mode |
| CN208498464U (en) * | 2018-05-22 | 2019-02-15 | 浙江亚太机电股份有限公司上海分公司 | Hydraulic booster system |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61175163A (en) * | 1985-01-25 | 1986-08-06 | アルフレツド・テグエス・ゲーエムベーハー | Hydraulic brake gear |
| CN101332811A (en) * | 2007-05-21 | 2008-12-31 | 罗伯特博世有限公司 | Master cylinder comprising a seal for helping the feedback |
| US20150000266A1 (en) * | 2013-06-28 | 2015-01-01 | Denso Corporation | Brake system for vehicle designed to improve mountability |
| WO2015177207A1 (en) * | 2014-05-20 | 2015-11-26 | Ipgate Ag | Actuating system for a vehicle brake and method of operating the actuating system |
| CN106218619A (en) * | 2016-08-30 | 2016-12-14 | 邓伟文 | A kind of electro-hydraulic servo brakes with multiple-working mode |
| CN208498464U (en) * | 2018-05-22 | 2019-02-15 | 浙江亚太机电股份有限公司上海分公司 | Hydraulic booster system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102217548B1 (en) | Vehicle brake system with dual acting plunger assembly | |
| US9956943B2 (en) | Electrohydraulic motor vehicle brake system and method for ventilation of the simulator circuit thereof; method for testing the functionality of a further electrohydraulic motor vehicle brake system, and computer program products for the methods | |
| CN111512060A (en) | Brake system with multiple pressure sources | |
| US20140265544A1 (en) | Vehicle Brake System With Plunger Assembly | |
| JP5780130B2 (en) | Braking device for vehicle | |
| KR20170040358A (en) | Actuation system, in particular for a vehicle brake, and method for operating the actuation system | |
| KR20180045556A (en) | Electric brake system | |
| CN105691372A (en) | electric brake system | |
| KR102580406B1 (en) | Electric brake system | |
| CN112896131B (en) | Diagnostic method for determining leakage in one or more three-way valves | |
| US10946849B2 (en) | Brake system for vehicle | |
| CN112896132A (en) | Method for diagnosing a leak in a simulator valve of a vehicle brake system | |
| CN208498464U (en) | Hydraulic booster system | |
| CN112896133A (en) | Diagnostic method for determining leaks in one or more three-way valves | |
| CN108482352A (en) | Hydraulic booster system | |
| KR20090121925A (en) | Vehicle brake device for electronic hydraulic brake system | |
| JP6254363B2 (en) | BRAKE SYSTEM HAVING ELECTRIC POWER BRAKE AND MANAGEMENT METHOD FOR SUCH BRAKE SYSTEM | |
| CN108482352B (en) | Hydraulic power assisting system | |
| CN110228456A (en) | A kind of integral type pedal sense simulator with fail safe function | |
| CN109080616B (en) | Pilot brake system for safe driving of mobile vehicle | |
| CN209505721U (en) | Electronic hydraulic brake system and its checking cylinder | |
| KR20180007795A (en) | Hydraulic feeding device for brake system | |
| CN112585046A (en) | Hydraulic pressure adjusting unit, brake system and control method | |
| CN109229084A (en) | Electronic hydraulic brake system and its checking cylinder | |
| KR20190096162A (en) | Electric brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240418 Address after: 311200, No. 1399 Asia Pacific Road, Shushan street, Xiaoshan District, Zhejiang, Hangzhou Applicant after: ZHEJIANG ASIA-PACIFIC MECHANICAL&ELECTRONIC Co.,Ltd. Country or region after: China Address before: No. 40, Lane 156, Changji Road, Anting Town, Jiading District, Shanghai, May 2018 Applicant before: SHANGHAI BRANCH OF ZHEJIANG ASIA-PACIFIC MECHNICAL & ELECTRONIC CO.,LTD. Country or region before: China |
|
| GR01 | Patent grant |