CN109501791A - Integrated form EPB valve assembly and EPB electronic brake system - Google Patents
Integrated form EPB valve assembly and EPB electronic brake system Download PDFInfo
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- CN109501791A CN109501791A CN201811158783.0A CN201811158783A CN109501791A CN 109501791 A CN109501791 A CN 109501791A CN 201811158783 A CN201811158783 A CN 201811158783A CN 109501791 A CN109501791 A CN 109501791A
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- 230000005611 electricity Effects 0.000 claims abstract description 6
- 230000006837 decompression Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 6
- 230000010354 integration Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
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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
- B60T13/24—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 gaseous
- B60T13/26—Compressed-air systems
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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
Abstract
The present invention relates to electronic brake system fields, disclose integrated form EPB valve assembly and EPB electronic brake system, it includes valve body, valve chamber includes A chamber, B chamber and relay piston upper surface and the C chamber that valve chamber inner wall surrounds, A chamber is disconnected or is connected to by valve assembly with B chamber, gas control two-position three-way valve connects air inlet, standby pressure electromagnetic valve, two-bit triplet solenoid valve, and the connection of control system of switching on or off electricity gas control two-position three-way valve or disconnection of standby pressure electromagnetic valve are connected to the gas circuit of C chamber；The connection of electromagnetism two-bit triplet solenoid valve control C chamber and gas control two-position three-way valve, relay piston move downward be used to open valve assembly control A chamber be connected to B chamber, B chamber is connected to gas outlet；Exhaust passage N is offered on valve body, exhaust passage N is connected to exhaust outlet, and vacuum solenoid valve control C chamber is connected to the gas circuit of exhaust passage N.Integration degree is high for the valve body, and pipeline arrangement is convenient, while internal respiration can prevent silt from blocking.
Description
Technical field
The present invention relates to automobile electronic parking braking system fields, more particularly to integrated form EPB valve assembly and EPB electronics
Parking braking system.
Background technique
EPB:ElectricalParkBreake, electronic brake system is a kind of by conventional hand control valve and quick release valve
It is changed to electronic control unit (NCU) and integrated form EPB valve assembly, and combines other systems and logic.With compact-sized, multiple functional
The advantages that vehicle safety control system.Traditional conventional parking brake is by hand control valve, connects driving cab pipeline and parking with fastly
Valve is put, is had the disadvantage in that 1) since traditional parking system driver's cabin domestic demand fills hand control valve and connects driving cab pipeline, space benefit
It is lower with rate；2) it and has a single function, can only realize parking function；3) pipeline arrangement is comparatively laborious with installation, and maintenance is also compared
It is cumbersome.
And automobile is in use, and silt, the dust on road surface are easy to stick on valve body, if arranged using outgoing call suction
The case where device of air, the time generates blocking external respiration valve later for a long time, to influence integrated form EPB valve assembly normal work, sternly
Braking performance of vehicle is influenced in weight situation.
Summary of the invention
To overcome the above deficiencies, the invention provides integrated form EPB valve assembly and EPB electronic brake systems
System, integrated form EPB valve assembly have the function of that conventional parking, uphill starting auxiliary, emergency brake, automatic parking, anti-forgetting are stayed
The functions such as vehicle, low-voltage variation；Remove hand control valve, connect driving cab pipeline and parking quick release valve；It improves travel safety, promoted
The operating comfort of driver
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
Integrated form EPB valve assembly, including ontology are provided with standby pressure electromagnetic valve, vacuum solenoid valve, two-bit triplet electricity in valve body
Magnet valve, gas control two-position three-way valve, relay piston, lower valve body are provided with valve assembly and exhaust guide holder arranged at the bottom, row
Exhaust outlet is provided on gas guide holder；It is additionally provided with air inlet and air outlet on valve body, valve chamber is provided in valve body, valve chamber includes
The C chamber that A chamber, B chamber and relay piston upper surface and valve chamber inner wall surround, A chamber and B chamber are disconnected or are connected to, gas by valve assembly
Control two-position three-way valve connection air inlet, standby pressure electromagnetic valve, two-bit triplet solenoid valve, the control system of switching on or off electricity gas control two of standby pressure electromagnetic valve
Position three-way valve connection disconnects the gas circuit for being connected to C chamber；Electromagnetism two-bit triplet solenoid valve control C chamber and gas control two-position three-way valve
Connection, relay piston move downward be used to open valve assembly control A chamber be connected to B chamber, B chamber is connected to gas outlet；Valve body
On offer exhaust passage N, exhaust passage N is connected to exhaust outlet, and the gas circuit that vacuum solenoid valve controls C chamber and exhaust passage N connects
It is logical.The advantages that entire valve body has that integration degree is high, occupies little space, and pipeline arrangement is simple, and long service life, inside exhale
Suction mode is hardly damaged.
Preferably, valve body includes upper valve body and lower valve body, upper valve body upper end is provided with cap assembly, standby pressure electromagnetic valve,
Two-bit triplet solenoid valve and vacuum solenoid valve are mounted in upper valve body and are connected to lower valve body gas circuit, relay piston, valve assembly,
Exhaust guide holder, air inlet and air outlet are arranged in lower valve body, and plug is additionally provided on upper valve body, is provided in upper valve body
EPB electronic control unit, EPB electronic control unit are electrically connected with vacuum solenoid valve, standby pressure electromagnetic valve and two-bit triplet solenoid valve.
It can be realized the automatic control of the various functions of valve body using control unit, and EPB control unit is built-in with integration degree
Height, influenced by the external world it is small, it is convenient for safeguarding and replacement the advantages that.
Preferably, gas control two-position three-way valve includes taking gas connector and the first valve chamber, the first valve chamber includes being provided with first
The spool chamber of spool and the close first piston chamber for taking gas connector one end, first piston setting is intracavitary in first piston, and first is living
Fill in and gas connector taken to surround D chamber, spool chamber includes E chamber and F chamber, first piston drive the first spool control E chamber be connected to F chamber or
It disconnects, E chamber is connected to air inlet；Two-bit triplet solenoid valve includes L chamber, O chamber and J chamber, two-bit triplet solenoid valves state, L
Chamber is connected to O chamber, and two-bit triplet solenoid valve off-position, O chamber is connected to J chamber；J chamber is connected to D chamber, and O chamber is connected to C chamber, E chamber
It is connected to L chamber；Standby pressure electromagnetic valve includes P chamber and Q chamber, and F chamber is connected to P chamber, and Q chamber is connected to C chamber, and standby pressure electromagnetic valve spool controls
The connection of P chamber and Q chamber.It is controlled accurately between each valve body, and the connection of each valve body is attached by built-in channel,
It is relatively reliable to keep each process more stable.And it is convenient for later period examination and maintenance, while facilitating each solenoid valve to each
The control being connected between a cavity.
Preferably, being provided with back pressure exhaust passage K in spool chamber, back pressure exhaust passage K is connected to channel N.Using interior
The mode for breathing exhaust, ensure that entire valve body is not plugged up, internal respiration type exhaust duct can effectively stop silt, dust etc.
The case where particulate matter enters in valve body, and the breather valve being mounted on valve body is avoided to result in blockage and fail under bad working environments.
Preferably, one end of the first spool and first piston cooperate, the other end is provided with the first spring, and the first spring supports
Touching is on end face of the spool chamber far from first piston.
Preferably, taking the hand stop valve being provided in gas connector for compulsory commutation parking braking, hand stop valve
It is connected to D chamber.It can be realized the function of compulsory commutation parking braking.
Preferably, further including control mouth, control mouth is connected to C chamber by gas circuit；Valve rod is provided in valve chamber, servo is living
Plug is socketed on valve rod, and N channel runs through the middle part of valve rod.Control mouth can guarantee can not to power in solenoid valve or other urgent feelings
It is used under condition, realizes the driving under anti-overlay model.
Preferably, being provided with check valve in the channel of air inlet connection A chamber, it is vented on guide holder and is provided with filter core
And muffler ASSY.
The present invention also provides a kind of EPB electronic brake systems, including above-mentioned integrated form EPB valve assembly, outlet
Mouth includes the first gas outlet, the second gas outlet, third gas outlet, the 4th gas outlet, and electronic brake system further includes gas storage
Cylinder, spring brake cylinder parking chamber, trailer module, air inlet is connected with gas receiver, and the first gas outlet, the second gas outlet are and bullet
Spring checking cylinder parking chamber is connected, and the 4th gas outlet is connected with trailer module air inlet, and control mouth is connected with air brake valve,
Third gas outlet is connected with the control mouth of trailer module.
The present invention has significant technical effect: invention removes hand control valve, connecing due to using above technical scheme
Driving cab pipeline and parking quick release valve, provide a kind of integrated form EPB valve assembly, and integrated form EPB valve assembly has conventional
The functions such as parking, uphill starting auxiliary, emergency brake, automatic parking function, anti-forgetting parking, low-voltage variation；Remove hand control valve,
Connect driving cab pipeline and parking quick release valve；It improves travel safety, improve the operating comfort of driver.And it is entire
Valve body long service life, easy to maintain, occupy little space the advantages that integration degree is high.
And the invention patent will remove the breather valve on valve body, and internal respiration type exhausting duct is arranged in valve inner.It is interior
Type of respiration exhaust duct can effectively stop the particulate matters such as silt, dust to enter in valve body, avoid the breather valve being mounted on valve body
The case where resulting in blockage and failing under bad working environments；Relative to by exhaust apparatus (breather valve), valve outer wall installation is set
Situation can effectively reduce cost, convenient for safeguarding；Simultaneously by exhaust duct setting when piston and stem side can solve piston motion
Piston generates the case where back pressure.And be able to solve when leak air in valve body or other in the case of lead to air pressure liter in shell
Height influences upper valve body and the problem of upper valve body piece safety, the intracorporal high pressure gas of upper valve can within the mode that is vented carry out
Exhaust.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the present embodiment.
Fig. 2 is the left view structural representation of the present embodiment.
Fig. 3 is the overlooking structure diagram of the present embodiment.
Fig. 4 is that cuing open for a-a shows structural schematic diagram along Fig. 2.
Fig. 5 is that cuing open for b-b shows structural schematic diagram along Fig. 2.
Fig. 6 is that cuing open for d-d shows structural schematic diagram along Fig. 3.
Fig. 7 is that cuing open for c-c shows structural schematic diagram along Fig. 2.
Fig. 8 is the partial enlarged view of Fig. 4.
Fig. 9 is the air circuit connection figure of EPB electronic brake system.
The toponym that each number designation is referred in attached drawing is as follows: cap assembly on 1,2, EPB electronic control unit, 3, on
Valve body, 4, control mouth, 5, take gas connector, 6, small piston, 7, lower valve body, 8, special-shaped seal ring, 9, check valve, 10, decompression electromagnetism
Valve, 11, air inlet, 12, valve rod, 13, valve assembly, 14, return spring, 15, exhaust guide holder, 16, muffler ASSY, 17,
Standby pressure electromagnetic valve, 18, two-bit triplet solenoid valve, 19, relay piston, 20, control mouth connector, the 21, first gas outlet, 22, second
Gas outlet, 24, reserved opening, 25 third gas outlets, the 12/26, the 4th gas outlet.27, diaphragm, 28, seven core plugs, 29, exhaust outlet,
31-gas control two-position three-way valves, the 311-the first spool, 312-spool chambers, 313-first piston chambers, 32-insertion rods, 612-
Assist gas off-take, 613-leakage ports, 61-piston onlies, the 314-the first spring.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing.State the skill in present embodiment
Letter in art title only plays the role of marked differential technical characteristic, should not be construed as the limit to the shape of technical characteristic
It is fixed.
Embodiment 1
As shown in Figures 1 to 8, integrated form EPB valve assembly, including ontology are provided with standby pressure electromagnetic valve 17, decompression in valve body
Solenoid valve 10, two-bit triplet solenoid valve 18, gas control two-position three-way valve 31, relay piston 19, lower valve body 7 are provided with valve assembly 13
With exhaust guide holder 15 arranged at the bottom, it is vented on guide holder 15 and is provided with exhaust outlet 29；Air inlet is additionally provided on valve body
11 and gas outlet, valve chamber is provided in valve body, and valve chamber includes that A chamber, B chamber and 19 upper surface of relay piston and valve chamber inner wall surround
C chamber, A chamber and B chamber are disconnected or are connected to by valve assembly 13, and gas control two-position three-way valve 31 connects air inlet 11, standby pressure electromagnetic valve
17, two-bit triplet solenoid valve 18, the connection of control system of switching on or off electricity gas control two-position three-way valve 31 or disconnection connection of standby pressure electromagnetic valve 17
To the gas circuit of C chamber；Electromagnetism two-bit triplet solenoid valve 18 control C chamber and gas control two-position three-way valve 31 connection, relay piston 19 to
Lower movement is used to open the control A chamber of valve assembly 13 and is connected to B chamber, and B chamber is connected to gas outlet；Exhaust passage is offered on valve body
N, exhaust passage N are connected to exhaust outlet 29, and vacuum solenoid valve 10 controls C chamber and is connected to the gas circuit of exhaust passage N.
Valve body includes upper valve body 3 and lower valve body 7, and in the present embodiment, upper valve body 3 includes shell and is integrally formed at shell bottom
Portion's interconnecting piece 330.Lower valve body 7 and 3 interconnecting piece of upper valve body, 330 junction are provided with fixing ring 8, lower valve body 3 and upper valve body 7
Valve chamber 90 is surrounded, is surrounded between the side wall of 7 inner cavity of lower end surface and lower valve body and the upper surface of relay piston 19 of interconnecting piece 330
C chamber.3 upper end of upper valve body is sealed with cap assembly 1, and standby pressure electromagnetic valve 17, two-bit triplet solenoid valve 18 and vacuum solenoid valve 10 are pacified
It is connected on the interconnecting piece 330 of upper valve body 3 and with 7 gas circuit of lower valve body, relay piston 19, valve assembly 13, exhaust guide holder
15, air inlet 11 and gas outlet are arranged in lower valve body 7, and plug 28 is additionally provided on upper valve body 3, is provided in upper valve body 3
EPB electronic control unit 2, wherein EPB electronic control unit 2 is integrated on cap assembly 1.EPB electronic control unit 2 and decompression
Solenoid valve 10, standby pressure electromagnetic valve 17 and two-bit triplet solenoid valve 18 are electrically connected.
In the present embodiment, during installation, standby pressure electromagnetic valve 17, two-bit triplet solenoid valve 18 and vacuum solenoid valve 10 are from upper valve
The opening of body 3 carries out placement installation, and 90 bottom of valve chamber is hatch frame, is sealed by setting exhaust guide holder 15
It closes, relay piston 19, valve assembly 13 are installed from the lower section of valve chamber 90.
The gas control two-position three-way valve 31 includes taking gas connector 5 and the first valve chamber 310,310 company of being provided with of the first valve chamber
On the side wall of socket part 330.First valve chamber 310 includes being provided with the spool chamber 312 of the first spool 311 and close to taking gas connector 5 one
The first piston chamber 313 at end, first piston 6 are arranged in first piston chamber 313, and first piston 6 can in first piston chamber 313
It slides to the left or to the right.First piston 6 and gas connector 5 is taken to surround D chamber, spool chamber includes E chamber and F chamber, and E chamber and F chamber pass through
Setting circlip 315 separates, and ventilation set 316 is supported by between check ring 315, when the first 311 original state of spool, with bullet
Property retaining ring 315 seal, 311 lateral surface of the first spool is provided with the notch of annular, and after movement, notch, which is fallen in, separates E chamber and F chamber
In circlip, E chamber is connected to F chamber by the axis hole in the middle part of circlip.First piston 6 drives the first spool 311 to control E chamber
It is connected to or disconnects with F chamber, E chamber is connected to by opening up channel on upper valve body 3 with air inlet 11；Two-bit triplet solenoid valve 18 includes
L chamber, O chamber and J chamber, 18 energized state of two-bit triplet solenoid valve, L chamber are connected to O chamber, 18 off-position of two-bit triplet solenoid valve, O
Chamber is connected to J chamber；J chamber is connected to D chamber, and O chamber is connected to C chamber by opening up channel on upper valve body 3, and E chamber is with L chamber by above opening
If channel is connected to；Standby pressure electromagnetic valve 17 includes P chamber and Q chamber, and F chamber is connected to P chamber by opening up channel on upper valve body 3, Q chamber and
C chamber on upper valve body 3 by opening up channel connection, the connection of the standby control of 17 spool of pressure electromagnetic valve P chamber and Q chamber.
Wherein, vacuum solenoid valve 10 includes G chamber, and G chamber is connected to C chamber, by opening up on upper valve body 3 between G chamber and C chamber
Channel is connected to, and 10 spool of vacuum solenoid valve control G chamber is connected to channel N.
Back pressure exhaust passage K is provided in spool chamber 312, back pressure exhaust passage K is connected to channel N.Wherein the present embodiment
In, back pressure exhaust passage K and 312 coaxial line of spool chamber design.The cross section of first piston chamber 313 is greater than the cross of spool chamber 312
Section, so the transition position of first piston chamber 313 and spool chamber 312, which forms step, forms limit function to the stroke of first piston 31
Energy.First piston 6 includes piston only 61 and the insertion rod 62 being plugged in the first spool 311, offers in insertion rod 62 auxiliary
Gas off-take 621 is helped, channel Y is provided in the middle part of the first spool 311,312 inner sidewall of valve core chamber is set close to one end of piston only 61
It is equipped with leakage port 613, leakage port 613 is connected to the space in upper valve body 3, when there is the compressed air of leakage in upper valve body 3, on
Compressed gas in valve body 3 by leakage port successively through spool chamber 312, auxiliary gas off-take 612, channel Y, channel K, channel N from
Exhaust outlet 29 is discharged.Wherein, channel Y, channel K, spool chamber 312 and first piston chamber 313 are coaxially set.
It will be apparent that one end of the first spool 311 and first piston 6 cooperate, the other end is provided with the first spring 314, first
Spring 314 contradicts 312 right side of spool chamber in the upper figure in end face of the spool chamber 312 far from first piston 6, and K channel is also out
It is located on the right side of spool chamber 312 and is connected to channel N, when the effect of the first spring 314 is original state, E chamber and F chamber are disconnected
Connection.
It further include control mouth 4, control mouth 4 is connected to C chamber by gas circuit；Valve rod 12, relay piston are provided in valve chamber 90
19 are socketed on valve rod 12, and guide sleeve 121 is additionally provided between relay piston 19 and valve rod 12, and guide sleeve 121 extends to exhaust
Mouth 29.N channel runs through the middle part of valve rod 12, and valve rod 12 is that relay piston 19 provides guiding role, further includes return spring 14, returns
Position 14 one end of spring and exhaust guide holder 15 contradict, and the other end and valve assembly 13 contradict the connection for disconnecting A chamber and B chamber.When C chamber
When air-suction state, relay piston 19 is moved down, and is contradicted the spring force for overcoming return spring 14 simultaneously on valve assembly 13, is opened valve
Door switch 13, A chamber are connected to B chamber.
Take the hand stop valve 50 being provided in gas connector 5 for compulsory commutation parking braking, hand stop valve 50 and D chamber
Connection, shut-off valve 50 include second spring 510 and the second spool 511, and second spring 510 pushes the second spool 511 to make shut-off valve
In off state.First spool 511 includes hand push end push rod 512, offers on push rod 512 and forces leakage port 513, promotion pushes away
Bar 512, D intracavitary compressed air are discharged from pressure leakage port 513.
Air inlet 11 is connected in the channel of A chamber and is provided with check valve 9, is vented and is provided with filter core on guide holder 15 and disappears
Sound device assembly 16.The partition A chamber of check valve 9 is connected to E chamber.
Wherein in the present embodiment, gas outlet include the first gas outlet, the second gas outlet, third gas outlet, the 4th gas outlet,
The left side of lower valve body 7 is arranged in air inlet 11, the first gas outlet, control mouth 4；The second gas outlet is provided on the right side of lower valve body 7；Under
Third gas outlet, the 4th gas outlet are provided on front side of valve body 7；Reserved opening is provided on rear side of lower valve body 7.The control mouth 4 and gas
Brake valve is connected.Each gas outlet is connected to B chamber.
It is hereafter that typically several working conditions are described to this valve body assembly, should knows, this valve body assembly
Several use states are not limited only to, as long as the function of being considered as this valve body assembly that this valve body assembly can be realized is special
Point.
Driving states:
10 no power of vacuum solenoid valve, standby pressure electromagnetic valve 17 are powered, power off after 18 energization 1s of two-bit triplet solenoid valve, compress
Air enters from 1 mouthful and divides two-way: all the way, opening check valve 9 and enters A chamber；L is entered via channel again by channel to E chamber all the way
Chamber, three XV of dynamic iron core assembly by electromagnetic force overcomes pressure in two-bit triplet solenoid valve 18 when two-bit triplet 18 energized state of solenoid valve
The effect of contracting spring force moves to three XV of static iron core assembly；Compressed air enters O chamber from channel L, via channel enter C chamber into
Row inflation, electromagnetic force is removed in power-off after 18 energization 1s of two-position three-way valve, and movable valve plug XV returns to initial position, disconnects L chamber and O chamber
Connection, O chamber is connected to J chamber at this time, and C intracavitary compressed air is back to O chamber, then enters D chamber through J chamber, pushes first piston 6
It moves right, while the first spool 31 being driven to move right, wherein first piston 6 moves right plunger shaft 312 and spool chamber
When at 312 transition shoulder, stop pushing, at this point, E chamber is connected to F chamber, the air that air inlet 11 enters E chamber is directly entered F
Chamber, then through F chamber to P chamber, at this time for the power-off of pressure electromagnetic valve 17, dynamic iron core assembly Ⅸ is opened by the effect return of Ⅻ power of spring
Valve port, compressed air reach C chamber from P chamber to Q chamber.Relay piston 19 moves down under the action of compressed air, overcomes return
The pre-jacking force of spring 14 opens valve assembly 13, and the compressed air in A chamber enters B chamber by the valve assembly 13 opened at this time,
Then the compressed air of B chamber enters respective springs checking cylinder parking chamber by each gas outlet, releases parking braking, into driving shape
State.
Parked state:
Purpose is, the compressed air in each spring brake cylinder is discharged by the exhaust outlet of integrated form EPB valve assembly.
At this point, the air inlet of cutting air inlet 11, is powered for pressure electromagnetic valve 17 and cuts off the compressed air for leading to C chamber, two three
Three-way electromagnetic valve 18 powers off, and the first spool 31 moves downward under the action of the first spring 314, D intracavitary compressed air through J chamber into
Enter O chamber, then C chamber is entered by O chamber, since vacuum solenoid valve 10 is powered at this time, G chamber is connected to channel N, C intracavitary compressed air
Enter N channel through G chamber, is most discharged afterwards through exhaust outlet 29.
Driving states under anti-overlay model: the state is under automatically controlled control mode failures even state alternatively, forcing under the state of staying
Release park mode.Standby pressure electromagnetic valve 17, vacuum solenoid valve 10, the equal no power of two-bit triplet solenoid valve 18, compressed air is from 11
Mouth enters valve chamber A；After depressing brake pedal, 4 mouthfuls of compressed airs of control mouth reach C chamber by channel.Relay piston 19 is being pressed
It is moved down under the action of contracting air, compressed spring 14 is overcome to push up valve assembly 13.The compressed air in A chamber is by opening at this time
Valve assembly enter B chamber.Enter respective springs checking cylinder parking chamber by each gas outlet, parking braking is released, into driving
State.
Embodiment 2
As shown in figure 9, the present embodiment provides a kind of EPB electronic brake systems, including the integrated form in embodiment 1
EPB valve assembly, electronic brake system further include gas receiver 80, spring brake cylinder parking chamber 81, trailer module 82, air inlet
11 are connected with gas receiver 80, and the first gas outlet 21, the second gas outlet 22 are connected with spring brake cylinder parking chamber 81, and the 4th
Gas outlet 26 is connected with 82 air inlet of trailer module, and control mouth 4 is connected with air brake valve, third gas outlet 25 and trailer mould
The control mouth of block 82 is connected.
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (10)
1. integrated form EPB valve assembly, including valve body, it is characterised in that: be provided with standby pressure electromagnetic valve (17), decompression electromagnetism in valve body
Valve (10), two-bit triplet solenoid valve (18), gas control two-position three-way valve (31), relay piston (19), lower valve body (7) are provided with valve
Assembly (13) and exhaust guide holder (15) arranged at the bottom are vented on guide holder (15) and are provided with exhaust outlet (29)；On valve body
It is additionally provided with air inlet (11) and gas outlet, valve chamber is provided in valve body, valve chamber includes A chamber, B chamber and relay piston (19) upper end
The C chamber that face and valve chamber inner wall surround, A chamber and B chamber are disconnected or are connected to by valve assembly (13), and gas control two-position three-way valve (31) is even
Tap into port (11), standby pressure electromagnetic valve (17), two-bit triplet solenoid valve (18), the control system of switching on or off electricity gas control of standby pressure electromagnetic valve (17)
Two-position three-way valve (31) connection disconnects the gas circuit for being connected to C chamber；Electromagnetism two-bit triplet solenoid valve (18) controls C chamber and gas control
The connection of two-position three-way valve (31), relay piston (19), which moves downward, is used to open valve assembly (13) control A chamber and B chamber company
Logical, B chamber is connected to gas outlet；Exhaust passage N is offered on valve body, exhaust passage N is connected to exhaust outlet (29), vacuum solenoid valve
(10) control C chamber is connected to the gas circuit of exhaust passage N.
2. integrated form EPB valve assembly according to claim 1, it is characterised in that: valve body includes upper valve body (3) and lower valve body
(7), upper valve body (3) upper end is provided with cap assembly (1), standby pressure electromagnetic valve (17), two-bit triplet solenoid valve (18) and decompression electricity
Magnet valve (10) is mounted in upper valve body (3) and is connected to lower valve body (7) gas circuit, relay piston (19), valve assembly (13), exhaust
Guide holder (15), air inlet (11) and gas outlet are arranged on lower valve body (7), and plug (28) are additionally provided on upper valve body (3),
It is provided with EPB electronic control unit (2) in upper valve body (3), EPB electronic control unit (2) and vacuum solenoid valve (10), standby piezoelectricity
Magnet valve (17) and two-bit triplet solenoid valve (18) electrical connection.
3. integrated form EPB valve assembly according to claim 2, it is characterised in that: gas control two-position three-way valve (31) includes taking
Gas connector (5) and the first valve chamber (310), the first valve chamber (310) include be provided with the first spool (311) spool chamber (312) and
Close to the first piston chamber (313) for taking gas connector (5) one end, the cross section of first piston chamber (313) is greater than spool chamber (312)
Cross section, first piston (6) setting first piston (6) and take gas connector (5) to surround D chamber, valve in the first piston chamber (313)
Core cavity includes E chamber and F chamber, and first piston (6) drives the first spool control E chamber to be connected to or disconnect with F chamber, E chamber and air inlet
(11) it is connected to；Two-bit triplet solenoid valve (18) includes L chamber, O chamber and J chamber, two-bit triplet solenoid valve (18) energized state, L chamber and O
Chamber connection, two-bit triplet solenoid valve (18) off-position, O chamber are connected to J chamber；J chamber is connected to D chamber, and O chamber is connected to C chamber, E chamber
It is connected to L chamber；Standby pressure electromagnetic valve (17) include P chamber and Q chamber, and F chamber is connected to P chamber, and Q chamber is connected to C chamber, standby pressure electromagnetic valve (17)
The connection of spool control P chamber and Q chamber；Vacuum solenoid valve (10) includes G chamber, and G chamber is connected to C chamber, 10 spool control of vacuum solenoid valve
G chamber processed is connected to channel N.
4. integrated form EPB valve assembly according to claim 2 or 3, it is characterised in that: be provided with back in spool chamber (312)
Exhaust passage K, back pressure exhaust passage K is pressed to be connected to channel N.
5. integrated form EPB valve assembly according to claim 4, it is characterised in that: the cross section of first piston chamber (313) is big
In the cross section of spool chamber (312), first piston (6) includes piston only (61) and is plugged on slotting in the first spool (311)
Enter bar (62), auxiliary gas off-take (621) is offered in insertion rod (62), is provided with channel Y, valve core in the middle part of the first spool (311)
Chamber (312) inner sidewall is provided with leakage port (613) close to one end of piston only (61), in leakage port (613) and upper valve body (3)
Space connection, leakage port (613), spool chamber (312), auxiliary gas off-take (612), channel Y, channel K, channel N are sequentially communicated
Form bleed passage.
6. integrated form EPB valve assembly according to claim 3, it is characterised in that: one end and first of the first spool (311)
Piston (6) cooperation, the other end are provided with the first spring (314), and the first spring (314) is contradicted in spool chamber (312) far from first
On the end face of piston (6).
7. integrated form EPB valve assembly according to claim 2, it is characterised in that: take in gas connector (5) and be provided with for strong
System releases the hand stop valve (50) of parking braking, and hand stop valve (50) is connected to D chamber.
8. integrated form EPB valve assembly according to claim 1, it is characterised in that: further include control mouth (4), control mouth (4)
C chamber is connected to by gas circuit；It is provided in valve chamber valve rod (12), relay piston (19) is socketed on valve rod (12), and N channel runs through
The middle part of valve rod (12).
9. integrated form EPB valve assembly according to claim 2, it is characterised in that: air inlet (11) is connected in the channel of A chamber
It is provided with check valve (9), is provided with filter core and muffler ASSY (16) in exhaust guide holder (15).
10. a kind of EPB electronic brake system, it is characterised in that: integrated including any one described in claim 1~9
Formula EPB valve assembly, gas outlet include the first gas outlet (21), the second gas outlet (22), third gas outlet (25), the 4th gas outlet
(26), electronic brake system further includes gas receiver (80), spring brake cylinder parking chamber (81), trailer module (82), air inlet
Mouthful (11) are connected with gas receiver (80), the first gas outlet (21), the second gas outlet (22) with spring brake cylinder parking chamber
(81) it is connected, the 4th gas outlet (26) is connected with trailer module (82) air inlet, control mouth (4) and air brake valve (4) phase
Connection, third gas outlet (25) are connected with the control mouth of trailer module (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158783.0A CN109501791B (en) | 2018-09-30 | 2018-09-30 | Integrated EPB valve assembly and EPB electronic parking brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158783.0A CN109501791B (en) | 2018-09-30 | 2018-09-30 | Integrated EPB valve assembly and EPB electronic parking brake system |
Publications (2)
| Publication Number | Publication Date |
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| CN109501791A true CN109501791A (en) | 2019-03-22 |
| CN109501791B CN109501791B (en) | 2024-01-19 |
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| CN201811158783.0A Active CN109501791B (en) | 2018-09-30 | 2018-09-30 | Integrated EPB valve assembly and EPB electronic parking brake system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572520A (en) * | 2020-06-11 | 2020-08-25 | 西安正昌电子股份有限公司 | Single-channel air pressure adjusting device of electric control braking system |
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|---|---|
| CN109501791B (en) | 2024-01-19 |
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