CN102745185A - Automobile brake apparatus - Google Patents

Automobile brake apparatus Download PDF

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Publication number
CN102745185A
CN102745185A CN2012100942507A CN201210094250A CN102745185A CN 102745185 A CN102745185 A CN 102745185A CN 2012100942507 A CN2012100942507 A CN 2012100942507A CN 201210094250 A CN201210094250 A CN 201210094250A CN 102745185 A CN102745185 A CN 102745185A
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CN
China
Prior art keywords
auxiliary
oil pressure
fluid
tube
pipe
Prior art date
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Granted
Application number
CN2012100942507A
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Chinese (zh)
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CN102745185B (en
Inventor
李东昱
朴成俊
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Hyundai Mobis Co Ltd
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Hyundai Mobis Co Ltd
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Publication date
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Publication of CN102745185A publication Critical patent/CN102745185A/en
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Publication of CN102745185B publication Critical patent/CN102745185B/en
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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
    • B60T13/10—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
    • B60T13/16—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 pumps directly, i.e. without interposition of accumulators or reservoirs
    • 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
    • B60T13/16—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 pumps directly, i.e. without interposition of accumulators or reservoirs
    • B60T13/161—Systems with master cylinder
    • 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
    • B60T13/16—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 pumps directly, i.e. without interposition of accumulators or reservoirs
    • B60T13/161—Systems with master cylinder
    • B60T13/167—In combination with distributor valve
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • B60T8/262—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves with stepped characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/062—Details, component parts

Abstract

The present invention relates to an automobile brake apparatus, comprising a main cylinder portion; wheel cylinder portions respectively mounted on a plurality of wheels; an oil pressure pipe portion for guiding the amplified brake fluid of the main cylinder portion into the wheels cylinder portions; a pump portion mounted at the oil pressure pipe portion and pumping the brake fluid through a motor; an auxiliary oil pressure portion connected with the oil pressure pipe portion and providing an auxiliary fluid oil pressure for the oil pressure pipe portion, wherein the auxiliary oil pressure portion can amplify the oil pressure of the auxiliary fluid.

Description

Brake device for car
Technical field
The present invention relates to brake device for car, specifically is to be multiplied the brake equipment oil pressure of auto use to be used for the brake device for car of commercial vehicle.
Background technology
Brake device for car generally provides braking force to wheel, and steer motor is stable to go.
The ESC of brake device for car (Electronic Stability Control) is automobile rotation and will exceed the maximum performance the time, utilizes oil pressure generation braking force, makes the system of automobile movement stabilization.
Fig. 1 is the generalized schematic of traditional brake device for car.
According to Fig. 1, car brake device 1 possesses master cylinder 2 and wheel cylinder 3.
Possess oil pressure pipe 4 between master cylinder 2 and the wheel cylinder 3, the oil pressure of amplification in the master cylinder 2 is introduced wheel cylinder 3.
On the other hand, oil pressure pipe 4 possesses the pump 6 that drives by through motor 5.Be the attitude of control car, implement glancing impact to wheel cylinder 3, oil pressure is arrived wheel cylinder 3 by amplification in the pump 6.
Reservoir 7 forms the interim storage area of master cylinder 2 brake fluids.
Said technical pattern is background technology of the present invention, helps to understand the present invention, is not meant the conventional art that the affiliated technical field of the present invention is generally understood.
Traditional brake device for car is to use like commercial vehicle/comm..vehicles such as big buses, because of the length of oil pressure pipe prolongs the problem that exists the required pressure of wheel cylinder to arrive rapidly.
Therefore this problem should obtain improving.
Summary of the invention
For improving said problem, it is a kind of through the power steering gear oil press that the present invention provides, and replenishes not enough oil pressure, makes required oil pressure arrive the brake device for car of wheel cylinder rapidly.
For realizing said purpose, the present invention provides a kind of brake device for car, and it comprises master cylinder; Wheel cylinder portion is assemblied in a plurality of wheels respectively; Oil pressure pipe portion will introduce said wheel cylinder portion respectively at the brake fluid of said master cylinder portion amplification; Pump portion, the motor suction brake fluid that possesses through said oil pressure pipe portion; Auxiliary oil pressure portion is connected with said oil pressure pipe portion and the oil pressure of auxiliary fluid is provided to said oil pressure pipe portion.Said auxiliary oil pressure portion can increase the oil pressure of auxiliary fluid.
Said auxiliary oil pressure portion, comprising: auxiliary tank comprises auxiliary fluid; Complementary pump portion, suction is included in the auxiliary fluid in the said auxiliary tank; Auxiliary cylinders portion increases the auxiliary fluid oil pressure that generates through said complementary pump portion; First auxiliary tube, one of which end are connected in said auxiliary tank portion, and the other end is connected with said complementary pump portion; Second auxiliary tube, one of which end are connected in said complementary pump portion, and the other end is connected with said auxiliary cylinders portion, possesses second auxiliary valve; The 3rd auxiliary tube, one of which end are connected in said second auxiliary tube, and the other end is connected with said auxiliary tank portion, possesses the 3rd auxiliary valve; The 4th auxiliary tube, one of which end are connected in said auxiliary cylinders portion, and the other end is connected with said oil pressure pipe portion.
Said auxiliary cylinders portion, comprising: vat, one of which end are connected in said second auxiliary tube; Little cylinder is communicated with said vat, and its other end is connected with said the 4th auxiliary tube, forms less than vat; Big piston is built in said vat, because of the auxiliary fluid through the said second auxiliary tube supply moves; Valve piston is built in said little cylinder, disposes separately with said big piston; Auxiliary pipe link connects said big piston and said valve piston.
Said auxiliary cylinders portion also comprises the oil pressure survey sensor, is installed in said vat, is used to measure oil pressure.
Said auxiliary cylinders portion also comprises elastomer-assisted, is used for to said valve piston resilient mounting being provided.
Said auxiliary cylinders portion also comprises exhaust tube, is connected with said little cylinder between said big piston and said valve piston and is used to discharge fluid.
Said auxiliary tank portion, said auxiliary tank portion is that power steering gear is used oil press.
The present invention relates to brake device for car is that brake fluid passes through to assist the rapid supercharging of oil pressure portion to arrive wheel cylinder portion.
The present invention relates to brake device for car is by the oil pressure of sensor measurement auxiliary fluid, is sent to control part, makes the driving of control part real-time regulated complementary pump portion.
The present invention relates to brake device for car is to form exhaust tube in auxiliary cylinders portion, prevents that brake fluid from mixing with auxiliary fluid mutually.
The valve piston sectional area that the present invention relates to brake device for car is less than big piston, and auxiliary fluid is provided in brake fluid to the pressure of big piston transmission in the valve piston increase.
Description of drawings
Fig. 1 is traditional brake device for car sketch plan scheme drawing;
Fig. 2 is the brake device for car generalized schematic of one embodiment of the invention;
Fig. 3 is the generalized schematic of auxiliary cylinders portion in the brake device for car of one embodiment of the invention;
Fig. 4 be in the brake device for car of one embodiment of the invention auxiliary cylinders portion by the state generalized schematic of auxiliary fluid supercharging.
Nomenclature
10: master cylinder portion 20: wheel cylinder portion
30: 31: the first pipes of oil pressure pipe portion
33: the three pipes of 32: the second pipes
35: the five pipes of 34: the four pipes
40: pump portion 50: auxiliary oil pressure portion
52: the second auxiliary tubes of 51: the first auxiliary tubes
54: the four auxiliary tubes of 53: the three auxiliary tubes
55: auxiliary tank portion 56; Complementary pump portion
57: auxiliary cylinders portion 71: vat
72: little cylinder 73: big piston
74: valve piston 75: auxiliary pipe link
76: sensor 77: elastomer-assisted
78: exhaust tube.
The specific embodiment
Below in conjunction with accompanying drawing, the brake device for car embodiment to the present invention relates to describes in detail.In the description process, line thickness on the diagram or member size etc. are for explaining simply more and clear, can exaggerate to some extent.Following term is that function defines according to the present invention, can be different according to user, utilization person's intention or convention.But these terms should be that the basis defines with the full content of this specification sheets.
Fig. 2 is the generalized schematic of the brake device for car of one embodiment of the invention; Fig. 3 is the generalized schematic of auxiliary cylinders portion in the brake device for car of one embodiment of the invention, Fig. 4 be in the brake device for car of one embodiment of the invention auxiliary cylinders portion by the state generalized schematic of auxiliary fluid supercharging.
According to Fig. 2 to Fig. 4, the brake device for car 100 that one embodiment of the invention relates to possesses master cylinder portion 10, wheel cylinder portion 20, oil pressure pipe portion 30, pump portion 40, auxiliary oil pressure portion 50.
Master cylinder portion 10 supplies brake fluid accordingly with the displaced phase of brake pedal.
Wheel cylinder portion 20 is assemblied on a plurality of wheels, comprises promptly that to a plurality of wheels the four wheels of common front-wheel and trailing wheel provides braking force.
Oil pressure pipe portion 30 introduces wheel cylinder portion 20 with the brake fluid of master cylinder portion 10 supplies, and brake fluid is to use brake noise.
Pump portion 40 is installed in oil pressure pipe portion 30, drives through motor 41 and aspirates brake fluid.The brake fluid that driving through pump portion 40 is stored in master cylinder portion 10 is, even the inoperation brake pedal also can move to wheel cylinder portion 40.
Auxiliary oil pressure portion 50 is connected with oil pressure pipe portion 30.Said auxiliary oil pressure portion 50 is that the oil pressure that generates through auxiliary fluid is offered oil pressure pipe portion 30.
The oil pressure pipe portion 30 of one embodiment of the invention possesses first pipe, 31, second pipe the 32, the 3rd pipe the 33, the 4th pipe the 34 and the 5th pipe 35.
One end of first pipe 31 is connected in master cylinder portion 10.Said first pipe 31 possesses the first valve 31a, is used to out/closes first pipe 31.
First pipe 31 is that a pair of master cylinder portion 10 that is connected to is arranged, and connects second pipe, 32 to the 5th pipes, the 35 guiding brake fluids of each first pipe 31.The configuration of said first pipe, 31 to the 5th pipes 35 is identical, describes in the face of second pipe, 32 to the 5th pipes 32 that connect one of them first pipe 31 down.
Second pipe 32 is in first pipe, 31 the other end branches.Said second pipe 32 is that the one of which end is connected in first pipe 31, and the other end is connected with the interim reservoir 60 that stores brake fluid.
Second pipe 32 possesses the pump portion 40 of the brake fluid that stores in the suction master cylinder portion 10, and the second valve 32a that opens/close second pipe 32.
The 3rd pipe 33 is connected in second pipe 32.Said the 3rd pipe 33 and second managing 32 and be connected between the second valve 32a and pump portion 40.
The 4th pipe 34 is that the one of which end is connected in the 3rd pipe 33, and the other end is connected with wheel cylinder portion 20.Said the 4th pipe 34 is to be formed with a plurality ofly, connects and to be assemblied in the wheel cylinder portion 20 on a plurality of wheels respectively.The 4th valve 34a opens/closes the 4th pipe 34.
The 5th pipe 35 is that the one of which end is connected in the 4th pipe 34, and the other end is connected with second pipe 32.Said the 5th pipe 35 is connected in each the 4th pipe 34, the five valve 35a and opens/close the 5th pipe 35.A plurality of the 5th pipes 35 polymerization each other connect second pipe 32.
The first valve 31a, the second valve 32a, the 4th valve 34a and the 5th valve 35a regulate through control part to open/amount of closing.Said control part is implemented monitoring to the wheel revolutions state, with opening/amount of closing of control cock, and the driving of adjusting pump portion 40 and motor 41.
The 3rd pipe 33 is connected in auxiliary oil pressure portion 50.Said auxiliary oil pressure portion 50 is connected the oil pressure of increase brake fluid with the 3rd pipe 33.
Therefore, when needing rapidly the control oil pressure like the wheel cylinder portion of Heavy Duty Commercial Cars such as big bus 20, the oil pressure of brake fluid increases through pump portion 40 and auxiliary oil pressure portion 50 and moves to wheel cylinder 20 rapidly.
The auxiliary oil pressure portion 50 of one embodiment of the invention possesses first auxiliary tube, 51 to the 4th auxiliary tubes 54, auxiliary tank portion 55, complementary pump portion 56, auxiliary cylinders portion 57.
Auxiliary tank portion 55 comprises auxiliary fluid.Said auxiliary tank portion 55 is to use power steering gear to use oil press.
Power steering gear is used to regulate the wheel direction with oil press, and chaufeur can change the wheel direction and not cost power with oil press through power steering gear.
Auxiliary tank portion 55 can be used as the storage power steering gear and uses fuel tank, also can be used as the power steering gear that comprises power steering gear usefulness oil and uses transfer tube.
The auxiliary fluid that 56 suction auxiliary tank portions 55 of complementary pump portion comprise.Said complementary pump portion 56 drives through control part to force the handover auxiliary fluid.
Auxiliary cylinders portion 57 is connected with oil pressure pipe portion 30 and the oil pressure of auxiliary fluid is provided to oil pressure pipe portion 30.
The brake fluid of oil pressure pipe portion 30 is to increase the wheel cylinder portion 20 that moves to through pump portion 40 rapidly with auxiliary cylinders portion 57 oil pressure.
First auxiliary tube 51 is that the one of which end is connected in auxiliary tank portion 55, and the other end is connected in complementary pump portion 56.Said first auxiliary tube 51 will be included in power steering gear and introduce complementary pump portion 56 with the auxiliary fluid in the oil press.
Second auxiliary tube 52 is that the one of which end is connected in complementary pump portion 56, and the other end is connected with auxiliary cylinders portion 57.Said second auxiliary tube 52 is that the auxiliary fluid that generates through complementary pump portion 56 is sent to auxiliary cylinders portion 57.
Second auxiliary tube 52 possesses the second auxiliary valve 52a that opens/close second auxiliary tube 52 through the control part driving.
The 3rd auxiliary tube 53 is that the one of which end is connected in second auxiliary tube 52, and the other end is connected with auxiliary tank portion 55.Said the 3rd auxiliary tube 53 is introduced auxiliary tank portion 55 with auxiliary fluid, prevents that auxiliary fluid from incurring loss in auxiliary tank portion 55.
The 3rd auxiliary tube 53 possesses the 3rd auxiliary valve 53a that opens/close the 3rd auxiliary tube 53 through the control part driving.
The 4th auxiliary tube 54 is that the one of which end is connected in auxiliary cylinders portion 57, and the other end is connected with oil pressure pipe portion 30.The oil pressure of the auxiliary fluid that said the 4th auxiliary tube 54 will generate from auxiliary oil pressure portion 50 passes to oil pressure pipe portion 30.
The auxiliary cylinders portion 57 of one embodiment of the invention possesses vat 71, little cylinder 72, big piston 73, valve piston 74 and auxiliary pipe link 75.
Vat 71 is that the one of which end is connected in second auxiliary tube 52 and flows into auxiliary fluid.Little cylinder 72 is that the one of which end is communicated with the other end of vat 71, and the other end is connected with the 4th auxiliary tube 54 and flows into brake fluid.
The formation 72 of little cylinder is less than vat 71.For example, vat 71 is to be connected with drum with little cylinder 72, and the internal diameter of vat 71 is greater than little cylinder 72.
Big piston 73 is built in vat 71, in vat 71, moves.Said big piston 73 possesses the sealing-in 73a that is formed by the material that comprises rubber and is close to the medial surface in the vat 71.
Valve piston 74 is built in little cylinder 72, in little cylinder 72, moves.Said valve piston 74 possesses the sealing-in 74a that is formed by the material that comprises rubber and is close to the medial surface of little cylinder 72.
The sectional area of big piston 73 is greater than the sectional area of valve piston 74, big or small corresponding with vat 71 and little cylinder 72.
Auxiliary pipe link 75 is that its both ends are connected in big piston 73 and valve piston 74 respectively.
Big piston 73 moves along valve piston 74 directions, and then valve piston 74 moves and increases the oil pressure of brake fluid along the 4th auxiliary tube 54 directions.
Poor because of big piston 73 and valve piston 74 sectional areas, the pressure that puts on valve piston 74 is greater than the pressure that puts on big piston 73.
For example, brake fluid applies the pressure of 100bar to big piston 73, and then big piston 73 moves through the pressure of 100bar, and sectional area is to be applied than 100bar increased pressure by brake fluid less than the valve piston 74 of big piston 73.
The auxiliary cylinders portion 57 of one embodiment of the invention also possesses sensor 76.Said sensor 76 is assemblied in vat 71 1 ends, measures the oil pressure of the auxiliary fluid that flows into from second auxiliary tube 52 and is sent to control part.In addition, sensor 76 can be installed in second auxiliary tube 52 that can measure the auxiliary fluid oil pressure.
The auxiliary cylinders portion 57 of one embodiment of the invention also possesses to valve piston provides flexibly mounted elastomer-assisted 77.
Said elastomer-assisted 77 moves and shrinks along the 4th auxiliary tube 54 directions with valve piston between the other end and valve piston 74 of little cylinder 72.
The oil pressure that the driving of complementary pump portion 56 stops then to put on big piston 73 is disengaged.Receive the restoring force expansion and valve piston 74 is restored to the original state thereupon elastomer-assisted 77.
After valve piston 74 restored to the original state, the big piston 73 that is attached thereto restored to the original state.
The auxiliary cylinders portion 57 of one embodiment of the invention also possesses exhaust tube 78.Said exhaust tube 78 is connected with little cylinder 72 between big piston 73 and valve piston 74.
Exhaust tube 78 guidings are discharged to auxiliary cylinders portion 57 outsides from the auxiliary fluid that big piston 73 spills, and guiding is discharged to auxiliary cylinders portion 57 outsides from the brake fluid that valve piston 74 spills.
Prevent that through exhaust tube brake fluid from mixing with the auxiliary fluid of auxiliary oil pressure portion 50, prevents that also auxiliary fluid from mixing with the brake fluid of oil pressure pipe portion 30.
The effect of facing the brake device for car of the one embodiment of the invention with said structure is down described.
Connect master cylinder portion 10 and each wheel cylinder portion 20 and possess auxiliary oil pressure portion 50 with the oil pressure pipe portion 30 of guiding brake fluid.Said auxiliary oil pressure portion 50 comprises power steering gear and uses auxiliary fluid.
Under said state,,, move to second pipe 32 through by the first open pipe 31 of the first valve 31a if Control of Automobile attitude and each wheel cylinder portion 20 requires rapid braking force then drives the brake fluid that is stored in master cylinder portion 10 with pump portion 40 through motor 41.This moment, the second valve 32a can close second pipe 32.
The brake fluid that flows into second pipe 32 moves to 20 bonded assemblys the 4th pipe 34 with each wheel cylinder portion through the 3rd pipe 33, and indivedual the 4th valve 34a that a plurality of the 4th pipes 34 possess respectively are open, make brake fluid arrive wheel cylinder portion 20.
For example, when the wheel cylinder portion 30 of off front wheel supplies brake fluids, manage 34 the 4th valve 34a opening and make brake fluid arrive the wheel cylinder portion 20 of off front wheel with wheel cylinder portion 20 bonded assemblys the 4th of off front wheel.
If to the wheel cylinder portion of the near front wheel 20 supply brake fluids, then close and brake fluid can't arrive the wheel cylinder portion 20 of the near front wheel with the 4th valve 34a of wheel cylinder portion 20 bonded assemblys the 4th pipe 34 of the near front wheel.
If the oil pressure to wheel cylinder portion 20 supply is excessive, then implement control by control part, make the 5th valve 35a of the 5th pipe 35 open and brake fluid is stored into receiver 60 temporarily.
On the other hand; Auxiliary oil pressure portion 50 can increase the oil pressure of the brake fluid that moves to the 3rd pipe 33; Therefore like Heavy Duty Commercial Cars such as big buses, even distance is far away again between master cylinder portion 10 and the wheel cylinder portion 20, oil pressure still can arrive each wheel cylinder portion 20 rapidly and the deficiency of solution brake fluid.
Summarize in the face of the operative relation of said auxiliary oil pressure portion 50 down.
After the control signal driving of complementary pump portion 56 with control part, be included in the auxiliary fluid of auxiliary tank portion 55, move to second auxiliary tube 52 from first auxiliary tube 51.At this moment, the second auxiliary valve 52a is open, and the 3rd auxiliary valve 53a closes.
Auxiliary fluid through complementary pump portion 56 moves to auxiliary cylinders portion 57, to big piston 73 reinforcings.
Depress in adding of auxiliary fluid, big piston 73 moves along valve piston 74 directions, and then bonded assembly valve piston 74 shrinks elastomer-assisted 77 and compresses the brake fluid in the 4th auxiliary tube 54 therewith.
At this moment, because of the sectional area of big piston 73 sectional areas less than valve piston 74, the pressure that puts on valve piston 74 can be greater than the pressure that puts on big piston 73.Thereupon, than the pressure of auxiliary fluid more the pressure of amplification be provided in brake fluid.
Brake fluid in the compression of the 4th auxiliary tube 54 moves to the 3rd pipe 33, mixes mutually with brake fluid through 40 compressions of pump portion, and brake fluid finally is that increase through pump portion 40 and auxiliary oil pressure portion 50 pressure arrives wheel cylinder 20 thereupon.
After the driving of complementary pump 56 stopped, valve piston 74 was got back to original position through elastomer-assisted, also got back to original position through auxiliary pipe link 75 with valve piston 74 bonded assembly big pistons 73.At this moment, the second auxiliary valve 52a closes, and the 3rd auxiliary valve 53a is open and auxiliary fluid moves to auxiliary tank portion 55.
In addition, the sensor 76 that provides the vat 71 of big piston 73 mobile spaces to possess is measured the pressure of the auxiliary fluid that flows into through second auxiliary tube 52.Said sensor 76 is sent to control part with gaging pressure, and control part is regulated the driving of complementary pump portion 56 according to the signal of sensor 76.
Above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the described technical scheme of aforementioned each embodiment, perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the scope of the said technical scheme of essence disengaging various embodiments of the present invention of relevant art scheme.

Claims (7)

1. a brake device for car is characterized in that, comprising:
Master cylinder portion;
Wheel cylinder portion is assemblied in a plurality of wheels respectively;
Oil pressure pipe portion will introduce said wheel cylinder portion respectively at the brake fluid of said master cylinder portion amplification;
Pump portion is assemblied in said oil pressure pipe portion, through motor suction brake fluid; And
Auxiliary oil pressure portion is connected in said oil pressure pipe portion, and the oil pressure of auxiliary fluid is provided to said oil pressure pipe portion;
Said auxiliary oil pressure portion increases the oil pressure of auxiliary fluid.
2. brake device for car according to claim 1 is characterized in that, said auxiliary oil pressure portion comprises: auxiliary tank portion comprises auxiliary fluid;
Complementary pump portion, suction is included in the auxiliary fluid in the said auxiliary tank;
Auxiliary cylinders portion is connected in said oil pressure pipe portion, increases the oil pressure of the auxiliary fluid that generates through said complementary pump portion;
First auxiliary tube, one of which end are connected in said auxiliary tank portion, and the other end is connected with said complementary pump portion;
Second auxiliary tube, one of which end are connected in said complementary pump portion, and the other end is connected with said auxiliary cylinders portion;
The 3rd auxiliary tube, one of which end are connected in said second auxiliary tube, and the other end is connected with said auxiliary tank portion, possesses the 3rd auxiliary valve;
The 4th auxiliary tube, one of which end are connected in said auxiliary cylinders portion, and the other end is connected with said oil pressure pipe portion.
3. brake device for car according to claim 2 is characterized in that, said auxiliary cylinders portion comprises:
Vat, one of which end are connected in said second auxiliary tube;
Little cylinder is communicated with said vat, and the other end is connected with said the 4th auxiliary tube, and it forms less than said vat;
Big piston is built in said vat, because of the auxiliary fluid through the supply of second auxiliary tube moves;
Valve piston is built in said little cylinder, disposes separately with said big piston;
Auxiliary pipe link connects said big piston and said valve piston.
4. brake device for car according to claim 3 is characterized in that,
Said auxiliary cylinders portion also comprises the oil pressure survey sensor, is used to measure oil pressure, is installed on said vat.
5. brake device for car according to claim 3 is characterized in that,
Said auxiliary cylinders portion also comprises elastomer-assisted, is used for to said valve piston elastic support being provided.
6. brake device for car according to claim 5 is characterized in that,
Said auxiliary cylinders portion also comprises exhaust tube, is used to discharge fluid, is connected with said little cylinder between said big piston and said valve piston.
7. according to each described brake device for car in the claim 2 to 6, it is characterized in that,
Said auxiliary tank portion is that power steering gear is used oil press.
CN201210094250.7A 2011-04-19 2012-04-01 Brake device for car Active CN102745185B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110036317A KR101767880B1 (en) 2011-04-19 2011-04-19 Brake device of vehicle
KR10-2011-0036317 2011-04-19

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CN102745185A true CN102745185A (en) 2012-10-24
CN102745185B CN102745185B (en) 2016-03-23

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN104176032A (en) * 2013-05-28 2014-12-03 现代摩比斯株式会社 Electronic hydraulic brake device

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Publication number Priority date Publication date Assignee Title
KR101567842B1 (en) * 2014-09-12 2015-11-11 현대모비스 주식회사 Brake device for vehicle

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