CN205675022U - A kind of EBD switch assembly - Google Patents

Abstract

The utility model relates to a kind of EBD switch assembly, and it includes housing, and be sequentially connected with in being placed in housing compression spring (3 3), diaphragm assembly (3 4), small valve-rod (3 5), EBD valve (3 6)；EBD valve (3 6) bottom is input air cavity (3 12)；Offering output pore (3 7) on housing, EBD valve (3 6) controls input air cavity (3 12) and connects or partition with export pore (3 7)；Passage (3 9) after described diaphragm assembly (3 4) bottom offers valve, is provided with on housing and exports the valve prepass (3 8) that pore (3 7) is connected；Series connection one relaying magnetic valve (3 8) between passage (3 9) after valve prepass (3 9) and valve；The ECU that relaying magnetic valve (3 8) is controlled by ABS.The utility model can make ABS combination relay valve possess independent EBD function, can the braking moment of balancing vehicle left and right wheels, reach mating of brake force and tractive force, it is ensured that the balance of vehicle and safety.

Description

A kind of EBD switch assembly

Technical field

The utility model relates to automobile brake technical field, and concrete technology is a kind of EBD switch assembly, belongs to ABS combination The regulation device of relay valve.

Background technology

EBD(Electronic Brakeforce Distribution) i.e. electronic braking force distribution is the auxiliary work(of ABS Can, it is in the control computer of ABS, increase a 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 oil hydraulic system will adjust the oil pressure reaching trailing wheel, with more balanced and closer to Utopian brake weight is distributed.It is configured with the vehicle of EBD system, the earth-grasping force shape between meeting each wheel of Auto-Sensing and ground Condition, suitably distributes strength produced by brake system to four wheels.Under the auxiliary of EBD system, brake weight is permissible Obtain optimal efficiency so that braking distance shortens significantly, and keep the steady of vehicle when brake, improve driving Safety.And the operation that EBD system is braked 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 a 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 invention of Application No. 200510044419.8 discloses a kind of ABS emergency relay valve, and this ABS promptly continues Dynamic valve is by the basis of the simplest relay valve, increases a solenoid valve.Its drawback is, when magnetic valve lost efficacy or occurred During fault, relay valve can not keep the controllability of vehicle.Meanwhile, above-mentioned ABS emergency relay valve, function singleness, completely unreal Existing ABS and the perfect combination of machinery relay valve, 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 works with ABS simultaneously.

Content of the invention

For solving the problems referred to above, the utility model provides a kind of EBD switch assembly applied on ABS combination relay valve, The utility model can make ABS combination relay valve increase independent EBD function, makes vehicle body more stable, further increases the peace of vehicle Overall coefficient.The technical solution of the utility model is as follows: a kind of EBD switch assembly, including housing, and is sequentially connected with in being placed in housing Compression spring, diaphragm assembly, small valve-rod, EBD valve；For input air cavity bottom EBD valve；Housing offers output gas Hole, EBD Valve controlling input air cavity and is connected or partition with export pore；Passage after offering valve bottom diaphragm assembly, Housing is provided with and exports the valve prepass that pore is connected；Series connection one relaying electromagnetism between passage after valve prepass and valve Valve；The ECU that relaying magnetic valve is controlled by ABS.

The utility model is applied on ABS combination relay valve, can increase EBD miscellaneous function for ABS combination relay valve, it is ensured that The balance of vehicle and safety.

As preferred structure, the small valve-rod of EBD switch assembly offers axially extending bore, at the shell at compression spring top Offer steam vent on body, released excessive air pressure by this hole.

As preferred structure, being provided with dustproof sheet on steam vent, dustproof sheet is pressed on housing by screw.Can keep EBD switch assembly and the running environment within relay valve of use of arranging in pairs or groups with it, be conducive to extending the service life of whole device, Improve its operating accuracy.

As preferred structure, output pore is three.

The utility model, simple in construction, cost of manufacture is low, uses on ABS combination relay valve, makes relay valve add solely Vertical EBD function, makes vehicle body more stable, further increases the safety coefficient of vehicle.

Brief description

Fig. 1 EBD switch assembly sectional view；

The sectional view that Fig. 2 EBD switch assembly is installed on relay valve；

The utility model reference is as follows:

EBD switch assembly:

Upper shell 3-0-1, lower house 3-0-2, screw 3-1, dustproof sheet 3-2, compression spring 3-3, diaphragm assembly 3-4 is little Valve rod 3-5, EBD valve 3-6, exports pore 3-7, valve prepass 3-10, relays magnetic valve 3-8, passage 3-9 after valve, inputs gas Chamber 3-12, steam vent 3-13.

Detailed description of the invention

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

Illustrate:

1st, logical arrester outside pore 3-7 is exported；

2nd, air cavity 3-12 external braking pressure source is inputted.

The utility model belong to ABS combination relay valve support the use device.The utility model is installed on ABS combination servo During valve, it is necessary to two sets about simultaneously installing.ABS combination relay valve includes two large divisions, and a part is mechanical valve body portion, one Control unit ECU being divided in ABS.ECU controls the magnetic valve of body portion.The EBD switch assembly that the utility model provides Being connected with mechanical valve body portion, magnetic valve therein and ECU are data cube computation, are provided with control this device electromagnetism in ECU The EBD control system of valve.

EBD switch assembly described in the utility model, including housing, and be sequentially connected with in being placed in housing compression spring 3-3, Diaphragm assembly 3-4, small valve-rod 3-5, EBD valve 3-6 offering axially extending bore；For input air cavity 3-bottom EBD valve 3-6 12；Offering output pore 3-7 on housing, EBD valve 3-6 controls and input air cavity 3-12 and export the connecting of pore 3-7 Or cut off；Passage 3-9 after offering valve bottom diaphragm assembly 3-4, is provided with on housing and exports the valve that pore 3-7 is connected Prepass 3-10；Connect between passage 3-9 after valve prepass 3-10 and valve a relaying magnetic valve 3-8；Relaying magnetic valve 3-8 is subject to Control the ECU in ABS.

Housing of the present utility model includes upper shell 3-0-1, lower house 3-0-2, diaphragm assembly 3-4 suppress in two housings it Between.This structure can ensure that the air pressure flowing through device does not let out damage.

Preferably, the housing at compression spring 3-3 top offers steam vent 3-13；Steam vent 3-13 is provided with Dustproof sheet 3-2, dustproof sheet 3-2 are pressed on housing by screw 3-1.The setting of dustproof sheet, in can ensureing the utility model housing The working environment of parts, it is thus possible to extend the utility model and the service life of matched ABS combination relay valve.

The vehicle actual conditions applied according to this device, output pore 3-7 is set to three.Owing to this device is using When, it is necessary to using 2 sets, therefore, output pore 3-7 is altogether six, leads to six arresters (caliper) simultaneously.

See Fig. 2, when the utility model is applied on ABS combination relay valve, 2 set EBD switch assemblies about installation simultaneously.

Its operation principle is as follows:

Under normal circumstances, pair of right and left EBD switch assembly is in normally open under the effect of compression spring 3-3.System When dynamic, the braking pressure after relay valve flows into input air cavity 3-12 by relay valve primary inlet port 1-10, flows through normally opened EBD Valve 3-6, enters output pore 3-7 and is assigned directly to affiliated all calipers.In the case that vehicle is at high-speed cruising unexpected When being braked, ECU in ABS while monitoring " locking " to wheel speed about the wheel speed of distribution wheels carry out mixing ratio relatively, if During because some factor makes left and right wheels difference in wheel more than ECU inner setting standard value, system can export control signal, and it is right to drive Answering relative low speeds side normally closed relaying magnetic valve (as a example by the relaying magnetic valve 3-8 of right side) to open, braking pressure is through valve prepass 3- 10th, after valve, passage 3-9 acts on diaphragm assembly 3-4, and small valve-rod 3-5 moves to right, and makes EBD valve 3-6 close immediately or air inflow subtracts Little, and released partial gas pressure by small valve-rod 3-5 axially extending bore, so that this " low speed " side wheel group brake force reduces, with flat The braking moment of weighing apparatus left and right wheels, reaches mating of brake force and frictional force (tractive force), it is ensured that the balance of vehicle and safety.

ABS of the present utility model combination relay valve is installed, although EBD works with ABS simultaneously, but each other without doing Disturbing, this EBD switch assembly work(makes ABS combination relay valve be provided with independent EBD function.

Claims (5)

1. an EBD switch assembly, it is characterised in that include housing (3-0-1,3-0-2), and be sequentially connected with in being placed in housing Compression spring (3-3), diaphragm assembly (3-4), small valve-rod (3-5), EBD valve (3-6)；EBD valve (3-6) bottom is input gas Chamber (3-12)；Offering output pore (3-7) on housing, EBD valve (3-6) controls input air cavity (3-12) and output gas The connection in hole (3-7) or partition；Described diaphragm assembly (3-4) bottom offer valve after passage (3-9), housing is provided with The valve prepass (3-10) that output pore (3-7) is connected；Series connection one between passage (3-9) after valve prepass (3-10) and valve Relaying magnetic valve (3-8)；The ECU that relaying magnetic valve (3-8) is controlled by ABS.

2. EBD switch assembly according to claim 1, it is characterised in that offer axially logical on small valve-rod (3-5) Hole.

3. EBD switch assembly according to claim 1, it is characterised in that open on the housing at compression spring (3-3) top It is provided with steam vent (3-13).

4. EBD switch assembly according to claim 3, it is characterised in that be provided with dustproof sheet on steam vent (3-13) (3-2), dustproof sheet (3-2) is pressed on housing by screw (3-1).

5. EBD switch assembly according to claim 1, it is characterised in that described output pore (3-7) is three.