CN205801094U - A kind of EBD electronic valve - Google Patents

Abstract

This utility model relates to a kind of EBD electronic valve, including housing, and sequentially install in housing cavity compression spring, diaphragm assembly, valve rod, valve, valve spring；Wherein, diaphragm assembly and the fixing connection of valve rod, valve rod and valve movable contact；Housing cavity is sequentially divided into spring housing, pressure regulation chamber, valve rear chamber and valve front chamber by diaphragm assembly, valve rod, valve；Wherein, spring housing, pressure regulation chamber, valve rear chamber are not attached to lead to each other；Valve controlling Zhe Fa rear chamber connects and partition with valve front chamber；Ventilate outside valve front chamber pressurized air source；Housing offers the interface of giving vent to anger being connected with valve rear chamber, passage after the valve being connected with pressure regulation chamber, the valve prepass being connected with valve front chamber or valve rear chamber；Connecting between passage after valve prepass and valve a relaying electromagnetic valve, this relaying electromagnetic valve is controlled by ECU system, controls connection or the partition of passage after valve prepass and valve.This utility model is applied on relay valve, makes relay valve possess EBD function.

Description

A kind of EBD electronic valve

Technical field

This utility model relates to automobile brake technical field, and concrete technology is a kind of EBD electronic valve, belongs to the auxiliary of relay valve Help device.

Background technology

EBD(Electronic Brakeforce Distribution) i.e. electronic braking force distribution is the auxiliary merit of ABS Can, it is in the control computer of ABS, to increase by one control software, mechanical system is completely the same with ABS.It is ABS system Effectively supplementing, general and ABS is applied in combination, and can improve effect of ABS.When there is brake hard, EBD acts on it at ABS Before, automatically can remove to compare the sliding ratio of rear tyre on the basis of front-wheel, as realized this according to the weight of vehicle body and pavement conditions When difference degree must be adjusted, brake system will adjust the wheel side brake torque of trailing wheel, with more balanced and closer to Utopian brake weight is distributed.It is configured with the vehicle of EBD system, meeting earth-grasping force shape between Auto-Sensing each wheel and ground Condition, by strength produced by brake system, suitably distributes to not homonymy wheel.Under the auxiliary of EBD system, brake weight can To obtain optimal efficiency so that braking distance shortens significantly, and keep the steady of vehicle brake when, improve driving Safety.And the operation that EBD system carries out braking among bend also has the function maintaining vehicle stabilization, increase negotiation of bends Safety.

At present, the mechanical performance of Relay valve for vehicle is hung, although had tremendous development, but owing to not having and anti-skid braking system System (Anti-lock Brake System is called for short ABS) combines, and has been not suitable with the market demand.

The patent of Application No. 200510044419.8 discloses a kind of ABS emergency relay valve, this ABS emergency relay valve It is by the basis of the simplest relay valve, increases a solenoid valve.Its drawback is, when electromagnetic valve lost efficacy or broke down Time, relay valve can not keep the controllability of vehicle.Meanwhile, above-mentioned ABS emergency relay valve, function singleness, ABS is not fully achieved With machinery relay valve perfect combination, particular without integrated EBD function.

The existing ABS combination valve comprising EBD, EBD valve, in order to reach EBD performance, often is doubled as preventing " locking " by designer Using, the problem that so design brings is: interfere when EBD with ABS works simultaneously.

Summary of the invention

For solving the problems referred to above, this utility model provides a kind of auxiliary device applied on relay valve, trailer relay valve After installing this auxiliary device additional, trailer relay valve has possessed the function that can distribute lateral air pressure, i.e. EBD function；If this device is installed On ABS combination relay valve, relay valve can be provided simultaneously with ABS function and EBD function, and two functions each work alone, will not Interfere, so that vehicle body is more stable, further increase the safety coefficient of vehicle.

The technical solution of the utility model is as follows: a kind of EBD electronic valve, including housing, and in housing cavity sequentially The compression spring of installation, diaphragm assembly, valve rod, valve, valve spring；Wherein, diaphragm assembly and valve rod are fixing to be connected, valve rod and Valve movable contact；Diaphragm assembly, valve rod, valve housing cavity is sequentially divided into spring housing, pressure regulation chamber, valve rear chamber and Valve front chamber；Wherein, spring housing, pressure regulation chamber, valve rear chamber are not attached to lead to each other；Valve controlling Zhe Fa rear chamber and valve ante-chamber The connection of room and partition；Ventilate outside valve front chamber pressurized air source；Housing offers the interface of giving vent to anger being connected with valve rear chamber, Passage after the valve being connected with pressure chamber, the valve prepass being connected with valve front chamber or valve rear chamber；At valve prepass and valve Series connection one relaying electromagnetic valve between rear passage, this relaying electromagnetic valve is controlled by ECU system, controls passage after valve prepass and valve Connection or partition.

As preferred structure, installing an inlet suction port in valve front chamber, this valve front chamber passes through inlet suction port and air pressure Source of the gas is connected.

As further preferred structure, valve rod offers axially extending bore.

As further preferred structure, housing is divided into end cap and valve body, diaphragm assembly to suppress in end cap and valve body At joint face.

As further preferred structure, end cap offers the collection steam vent being connected with spring housing, collect aerofluxus Dust cover it is coated with on hole.

As optimal technical scheme, the relaying electromagnetic valve that this utility model is taked includes shell, suitable in chamber in the enclosure Secondary connection has electromagnetism normal closed gate, electromagnetic valve spring, dynamic iron core, the normally opened valve of electromagnetism, secured core；Electromagnetic valve coil is coated with In the periphery of dynamic iron core, appliance wiring mouth external EBD system；The shell of the both sides of electromagnetism normal closed gate offers respectively with The passage that after described valve prepass, valve, passage is connected, so that this relaying electromagnetic valve is logical after being series at valve prepass and valve Between road；Electromagnetism normally opened valve both sides are respectively communicated with after valve passage and the solenoid valve vents passage being connected with ambient atmosphere.

As further preferred structure, solenoid valve vents passage is the central through hole being opened on secured core.

As further preferred structure, solenoid valve vents channel connection is in spring housing.

This valve arrangement is simple, compact, highly sensitive, is adapted for mount to relay valve side, or by external circuit, is installed on Other correct positions of certain distance are had away from relay valve.

Accompanying drawing explanation

Sectional view under the normality of Fig. 1 EBD electronic valve technical scheme one；

After relaying electromagnetic valve startup effect in Fig. 2 EBD electronic valve technical scheme one, valve-closed state schematic diagram；

Sectional view under the normality of Fig. 3 EBD electronic valve technical scheme two；

Reference is as follows:

Passage 2, electromagnetism normal closed gate 3 after valve prepass 1, valve, electromagnetic valve spring 4, dynamic iron core 5, the normally opened valve of electromagnetism 6, electromagnetic valve coil 7, appliance wiring mouth 8, secured core 9, solenoid valve vents passage 10, dust cover 11, collect steam vent 12, compression Spring 13, spring housing 14, end cap 15, diaphragm assembly 16, valve rod 17, axially extending bore 18, interface 19 of giving vent to anger, valve 20, valve ante-chamber Room 21-1, valve rear chamber 21-2, pressure regulation chamber 21-3, valve spring 22, valve body 23, inlet suction port 24.

Detailed description of the invention

It is better understood from this utility model, below in conjunction with the accompanying drawings with specific embodiment pair for the ease of those skilled in the art This utility model is described in further details, and the description below is only exemplary.

This utility model is the assistant regulating and controlling device of relay valve, and relay valve is the core component of brakes.This practicality The novel installation in brakes is as follows: wheel speed sensors is connected to intelligent electric appliance control system, and this control system includes ECU system System.This utility model is connected to ECU system by appliance wiring mouth 8.The related data gathered at wheel is passed by wheel speed sensors Transporting to the ECU system in intelligent electric appliance control system, ECU system controls this utility model action by appliance wiring mouth 8, thus Make relay valve possess EBD function, i.e. realize the Torque distribution braking controlled by electronic system.

Technical scheme 1:

See that Fig. 1, EBD electronic valve described in the utility model include the housing being made up of end cap 15 and valve body 23, in housing Chamber is sequentially provided with compression spring 13, diaphragm assembly 16, valve rod 17, valve 20, valve spring 22；Wherein, diaphragm assembly 16 Connection fixing with valve rod 17, valve rod 17 and valve 20 movable contact；Diaphragm assembly 16, valve rod 17, valve 20 are suitable by housing cavity The secondary spring housing 14 that is divided into, pressure regulation chamber 21-3, valve rear chamber 21-2 and valve front chamber 21-1；Spring housing 14, pressure regulation chamber 21- 3, valve rear chamber 21-2 is not attached to lead to each other；Housing offers give vent to anger interface 19 and the valve being connected with valve rear chamber 21-2 Prepass 1；Passage 2 after the valve being connected with pressure regulation chamber 21-3；Series connection one relaying between passage 2 after valve prepass 1 and valve Electromagnetic valve, this relaying electromagnetic valve is connected with ECU system by data wire, when relaying electromagnetic valve starts, after valve prepass 1 and valve Passage 2 is connected；Relaying electromagnetic valve is when being failure to actuate, and after valve prepass 1 and valve, passage 2 is not attached to lead to.

Installing an inlet suction port 24 on valve front chamber 21-1, valve front chamber is connected with air pressure source of the gas by inlet suction port 24 Logical.Not being installed into gas joint 24, said apparatus can only be installed on the valve body of relay valve, and valve front chamber 21-1 is defeated with relay valve Venthole is connected.After installing inlet suction port 24, valve front chamber 21-1 is by the output pore of inlet suction port 24 with relay valve Being connected, this device installation site in brakes can the most arbitrarily select.

Realize the sensitivity of EBD function in order to improve this device, valve rod 17 offers axially extending bore 18.

Housing of the present utility model includes end cap 15 and valve body 23, and diaphragm assembly 16 direct pressing is in end cap and the company of valve body At junction, the structure of housing compacting diaphragm is used to be conducive to the work chamber of diaphragm assembly both sides, i.e. spring housing 14 and pressure regulating cavity Room 21-3 sealing each other, prevents from flowing through the leakage loss of the air pressure of this device.

Meanwhile, in order to improve the sensitivity of whole device, diaphragm assembly 16 utilizes deformable material to make, as high-elastic Rubber etc., and under normal conditions, diaphragm assembly 16 fits tightly with valve body 23, i.e. pressure regulation chamber 21-3 is zero volume as far as possible.With Time, on the sidewall that valve rod 17 contacts with valve interior wall, sealing device is installed.This sealing device can prevent valve rear chamber Air pressure in 21-2 flows to pressure regulating cavity 21-3, reduces device sensitivity.

In the present embodiment, give vent to anger interface 19 and valve prepass 1 is distributed in the both sides of valve rod 17, on same level cross section, This position relationship, the compact conformation of the most whole valve.

Offering the collection steam vent 12 being connected with spring housing 14 on end cap 15, pore can be by many within whole device Residual air pressure goes out, and improves its sensitivity.

In order to further keep the working environment within valve, extend the service life of this device, in valve and ambient atmosphere On the collection steam vent of connection, cover a dust cover 11.

Under normality, the annexation between this utility model each several part is as follows: under the suppression of compression spring 13, film Sheet assembly 16 is close to valve body 23 inwall, makes pressure regulation chamber 21-3 as far as possible for zero volume；Valve rod 17 supports valve 20 and is in often Open state；Air pressure after the valve of relay valve, enters valve front chamber 21-1 by inlet suction port 24, flows through valve 20 sidewall, enters Ru Fa rear chamber 21-2, injects interface 19 of giving vent to anger, and interface 19 of giving vent to anger leads directly to each brake chamber of automobile.

The relaying electromagnetic valve that this utility model is installed have employed following technical scheme: outside this relaying electromagnetic valve includes Shell, connects smoothly in chamber in the enclosure and has electromagnetism normal closed gate 3, electromagnetic valve spring 4, dynamic iron core 5, the normally opened valve of electromagnetism 6, Gu Fixed core 9；Electromagnetic valve coil 7 is coated on the periphery of dynamic iron core 5, appliance wiring mouth 8 external EBD system；At electromagnetism normal closed gate 3 Both sides shell on offer the passage being connected respectively with passage 2 after valve prepass 1, valve, so that this relaying electromagnetism Valve is series at after valve prepass 1 and valve between passage 2；Electromagnetism normally opened valve 6 both sides be respectively communicated with after valve passage 2 and with the external world The solenoid valve vents passage 10 that air is connected.

In order to make compact conformation, the shell of relaying electromagnetic valve and above-mentioned end cap 15 and the integral setting of valve body 23, meanwhile, Central through hole is offered as solenoid valve vents passage 10 on secured core 9.

In order to keep this relaying electromagnetic valve internal operating environment, improving its service life, electromagnetic valve is arranged by this utility model Gas passage 10 is directly communicates with spring housing 14, is indirectly connected with ambient atmosphere by the collection steam vent 12 being connected with spring housing 14 Logical.Which reduce the number of openings that this device is connected with ambient atmosphere, effectively prevent extraneous dust and other impurities from falling into this dress Put inner chamber, be conducive to extending the service life of valve.

Under normality, the electromagnetism normal closed gate 3 in relaying electromagnetic valve is the control switch of passage 2 after valve prepass 1 and valve, is After normally off, i.e. valve prepass 1 and valve, passage 2 is not attached to lead to；The normally opened valve of electromagnetism 6 is passage 2 and solenoid valve vents after valve The control switch of passage 10, is normally open, and i.e. after valve, passage 2 is connected with solenoid valve vents passage 10.Central relay magnet valve During work, electromagnetism normal closed gate 3 is opened, and valve prepass 1 is connected with passage after valve 2；The normally opened valve of electromagnetism 6 is closed, logical after valve Road 2 and electromagnetism exhaust passage 10 disconnect.

The excessive air pressure that solenoid valve vents passage 10 produces after discharging relaying electromagnetic valve action, its work process is such as Under: after central relay magnet valve starts, electromagnetism normal closed gate 3 is opened, and the normally opened valve of electromagnetism 6 is closed, and air pressure is entered by valve prepass 1 Passage 2 after valve, enter and control chamber 22-3；After central relay magnet valve quits work, electromagnetism normal closed gate 3 is closed, and electromagnetism is normally opened Valve 6 is opened, and the excessive air pressure in controlling chamber 21-3 can pass through the normally opened valve of electromagnetism 6, solenoid valve vents passage 10 is discharged.

Different allocation plan is taked in the visual vehicle fact of this utility model installation situation in brakes: such as tradition three Bridge is hung Relay valve for vehicle and is provided with 6 valve rear ports respectively towards the arrester of 6 wheels, and 6 valve rear ports are divided into 3 groups；Often The wheel of one group of the most corresponding left and right sides of valve rear port.

Designer or car owner driver can select to install on arbitrary group of valve rear port of relay valve to connect this reality as required With new device, it is possible to select two groups or three groups of valve rear ports install this utility model device simultaneously.

Operation principle of the present utility model is introduced below in conjunction with Fig. 1 and Fig. 2:

As it is shown in figure 1, vehicle is under normal travel conditions, this utility model under the effect of compression spring 13, valve 20 It is in normally open.If EBD enters duty during braking, from the braking pressure after relay valve by inlet suction port 24, note Ru Fa front chamber 21-1, flows through valve 20, enters valve rear chamber 21-2, flows to arrester system after injecting interface 19 of giving vent to anger Dynamic.

As it is shown on figure 3, when vehicle is braked suddenly in the case of high-speed cruising, wheel speed sensors will be from wheel collection To data be transferred to ECU system, this system carries out mixing ratio relatively to the wheel speed distributing wheels about wheel speed, if because some because of When element makes left and right wheels difference in wheel more than ECU inner setting standard value, system can export control signal, and control signal drives correspondence Electromagnetism normal closed gate 3 in this utility model of relative low speeds side is opened, and simultaneously closes off the normally opened valve of electromagnetism 6, with valve back cavity Passage 2 after air pressure injection valve in the valve prepass 1 that room 21-2 is connected, enters pressure regulation chamber 21-3, makes diaphragm assembly 16 overcome The pressure of compression spring 13, band ovable valve stem 17 move to left, and valve 20 moves to left Shi Fa rear chamber 21-2 under the elastic force of valve spring 22 Air inflow reduce, now, " low speed " side wheel group brake force can be made to reduce.When valve 20 moves to left to closedown, and valve rod 17 can take off Leave valve 20, the air pressure in valve rear chamber 21-2, can be released partial gas pressure by axially extending bore 18, make " low speed " further Side wheel group brake force reduces, and to balance the braking moment of left and right wheels, reaches mating of brake force and frictional force (pull strength), guarantor The balance of card vehicle and safety.

Valve prepass 1 is connected by the present embodiment with valve rear chamber 21-2, i.e. the air pressure of valve prepass 1 is from valve 20 After air pressure, this purpose of design is that the air pressure decompression that interface 19 is connected on arrester of once giving vent to anger is too much, it is meant that front valve leads to Air pressure in road 1 synchronizes to reduce, thus after causing valve, the air pressure in passage 2 and pressure regulation chamber 21-3 synchronizes to reduce, now, and diaphragm Assembly 16 and compression spring 13 act on jointly, promote valve rod 17 return, make valve 20 no longer be automatically opened up by the control of ECU, Axially extending bore 1 automatic 8 is closed, it is achieved pressure holding function, can effective guarantee braking pressure will not too much lose.

Technical scheme 2:

Seeing Fig. 3, unlike technical scheme 1, the valve prepass 1 of this programme is directly connected with valve front chamber 21-1, I.e. the air pressure of valve prepass 1 is from the air pressure before control valve 20, this design, can realize the air pressure of valve prepass 1 not with logical Air pressure (air pressure of interface 19 of i.e. giving vent to anger) toward arrester synchronizes variation.When interface 19 decompression of giving vent to anger is too much, valve prepass 1 Air pressure but remains constant, and the air pressure flowed into after valve in passage 2 and pressure regulation chamber 21-3 is constant, and this high pressure acts on film always Bottom sheet assembly 16, make valve 20 cannot self-return, the too much situation of interface 19 decompression of giving vent to anger cannot obtain response in time, lead Cause the sensitivity decrease of whole device.

The utility model of the technical program, is suitable for decompression and requires the control of other the highest air pressure.

The most highly sensitive technical scheme 1 or technical scheme 2, be provided with relay valve of the present utility model, servo Valve is all provided with independent EBD function；If installing this utility model on ABS combination relay valve, ABS with EBD works simultaneously, but The most noiseless.Solve problems of the prior art.

Claims (10)

1. an EBD electronic valve, it is characterised in that include housing, and the compression spring sequentially installed in housing cavity (13), diaphragm assembly (16), valve rod (17), valve (20), valve spring (22)；Wherein, diaphragm assembly (16) and valve rod (17) Fixing connection, valve rod (17) and valve (20) movable contact；Diaphragm assembly (16), valve rod (17), valve (20) are by housing cavity Sequentially it is divided into spring housing (14), pressure regulation chamber (21-3), valve rear chamber (21-2) and valve front chamber (21-1)；Wherein, spring Room (14), pressure regulation chamber (21-3), valve rear chamber (21-2) are not attached to lead to each other；Valve (20) controls Zhe Fa rear chamber (21- 2) with the connecting and partition of valve front chamber (21-1)；Valve front chamber (21-1) ventilates outward pressurized air source；Housing offers and valve The interface of giving vent to anger (19) that rear chamber (21-2) is connected, passage (2) after the valve being connected with pressure regulation chamber (21-3), before valve The valve prepass (1) that chamber (21-1) or valve rear chamber (21-2) are connected；After valve prepass (1) and valve between passage (2) Series connection one relaying electromagnetic valve, this relaying electromagnetic valve is controlled by ECU system, controls the company of passage (2) after valve prepass (1) and valve Lead to or cut off.

EBD electronic valve the most according to claim 1, it is characterised in that (21-1) installs an inlet suction port in valve front chamber (24), this chamber is connected with air pressure source of the gas by inlet suction port (24).

EBD electronic valve the most according to claim 1 and 2, it is characterised in that offer axially extending bore on valve rod (17) (18).

EBD electronic valve the most according to claim 3, it is characterised in that described housing includes end cap (15) and valve body (23), Described diaphragm assembly (16) is suppressed at the joint face of end cap and valve body.

EBD electronic valve the most according to claim 4, it is characterised in that offer on end cap (15) and spring housing (14) The collection steam vent (12) being connected.

EBD electronic valve the most according to claim 1 and 2, it is characterised in that described relaying electromagnetic valve includes shell, shell The electromagnetism normal closed gate (3) connected smoothly in inner chamber, electromagnetic valve spring (4), dynamic iron core (5), the normally opened valve of electromagnetism (6), Gu Fixed core (9)；Electromagnetic valve coil (7) is coated on the periphery of dynamic iron core (5), appliance wiring mouth (8) external EBD system；At electromagnetism The ventilation being connected respectively is offered with passage (2) after described valve prepass (1), valve on the shell of the both sides of normal closed gate (3) Hole, so that this relaying electromagnetic valve is series at after valve prepass (1) and valve between passage (2)；Electromagnetism normally opened valve (6) both sides are divided Passage (2) and the solenoid valve vents passage (10) that is connected with ambient atmosphere after not being communicated in valve.

EBD electronic valve the most according to claim 6, it is characterised in that described solenoid valve vents passage (10) is to be opened in Central through hole on secured core (9).

EBD electronic valve the most according to claim 7, it is characterised in that solenoid valve vents passage (10) is communicated in spring housing (14).

EBD electronic valve the most according to claim 3, it is characterised in that described relaying electromagnetic valve includes shell, shell inner cavity In the electromagnetism normal closed gate (3) that connects smoothly, electromagnetic valve spring (4), dynamic iron core (5), the normally opened valve of electromagnetism (6), fixing ferrum Core (9)；Electromagnetic valve coil (7) is coated on the periphery of dynamic iron core (5), appliance wiring mouth (8) external EBD system；Normally closed at electromagnetism The passage being connected respectively is offered with passage (2) after described valve prepass (1), valve on the shell of the both sides of valve (3), from And make this relaying electromagnetic valve be series at after valve prepass (1) and valve between passage (2)；Electromagnetism normally opened valve (6) both sides connect respectively Lead to after valve passage (2) and the solenoid valve vents passage (10) being connected with ambient atmosphere.

EBD electronic valve the most according to claim 9, it is characterised in that described solenoid valve vents passage (10) is to be opened in Central through hole on secured core (9).