GB2059018A - A pressure-control valve unit - Google Patents
A pressure-control valve unit Download PDFInfo
- Publication number
- GB2059018A GB2059018A GB8030128A GB8030128A GB2059018A GB 2059018 A GB2059018 A GB 2059018A GB 8030128 A GB8030128 A GB 8030128A GB 8030128 A GB8030128 A GB 8030128A GB 2059018 A GB2059018 A GB 2059018A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- housing
- control valve
- valves
- valve unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- 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
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3605—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force wherein the pilot valve is mounted in a circuit controlling the working fluid system
-
- 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
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
Abstract
A pressure control valve unit (1) for an anti-skid braking system of a motor vehicle having a plurality of pressure-dependent main valves in an upper portion (2) of a housing and a plurality of pilot control valves for the main valves in a lower portion (3) of the housing. A cast or pressed, two-part intermediate plate (4) is disposed between the upper portion (2) of the housing and the lower portion (3) of the housing and is provided with pressure. medium passages (6, 7). The intermediate plate (4) has line portions (13, 14, 24) which are formed during manufacture and which are intended for establishing line connections to the upper portion (2) of the housing and/or the lowest portion (3) of the housing. Pressure medium or electrical current can flow through the line portions (13, 14, 24). <IMAGE>
Description
SPECIFICATION
A pressure-control valve unit
The present invention relates to a pressurecontrol valve unit.
In particular the invention relates to a pressure-control valve unit for an anti-skid system for the wheel brakes of a motor vehicle, which unit is to be disposed, in use in a brake line between a brake pressure generator and a wheel or two wheel brake cylinders which are associated especially with a common vehicle axle. The said unit comprising a two-position multi-circuit valve common to all the brake cylinders and a respective two port, two position valve for each brake cylinder, which valves act as main valves and are pressureactuated by pilot control solenoid valves, the pressure-actuated main valves being disposed in an upper portion of a housing and the pilot control valves being disposed in a lower portion of the housing.A pressure-control valve unit of this kind is known from German published patent specification (Offenlegungsschrift) No. 28 10 1 51.
In this known pressure-control valve unit, failures can be caused by loosening of the covers of working chambers of the main valves. Furthermore, the electrical connection leads for the solenoids of the pilot control valves in a vehicle are frequently subjected to considerable vibration, such that these connection leads are interrupted. Moreover, the electrical connections might be interchanged during assembly. Finally, it is frequently not a simple matter to assemble the individual parts of a pressure-control valve unit of this kind.
According to the present invention there is provided a pressure-control valve unit for an anti-skid system for the wheel brakes of a motor vehicle, which unit is to be disposed in use in a brake line between a brake pressure generator and a wheel or two wheel brake cylinders which are associated especially with a common vehicle axle, the said unit comprising a two-position multi-circuit valve common to all the brake cylinders and a respective two port, two position valve for each brake cylinder, which valves act as main valves and are pressure-actuated by pilot control solenoid valves, the pressure-actuated main valves being disposed in an upper portion of a housing and the pilot control valves being disposed in a lower portion of the housing, and a cast or pressed intermediate plate disposed between the upper and the lower portions of the housing which plate has pressure medium passages and has line portions which are intended for establishing line connections to the upper portion of the housing and/or the lower portion of the housing.
The pressure-control valve unit in accordance with the invention has the advantage that the covers of the main valves are satisfactorily fixed after assembly of the intermediate plate. Furthermore, the electrical connections can be established in a reliable manner such that they cannot be interrupted after the intermediate plate has been mounted, even in the case of considerable vibration. Moreover, the electrical leads cannot be interchanged during assembly. Finally, the assembly work is easily facilitated and is very reliable.
The present invention will now be described further, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a partially sectioned view of a pressure-control valve unit, in accordance with the invention.
Figure 2 is a detail, drawn to a larger scale of the embodiment of Fig. 1.
Figure 3 is a modification of the detail of
Fig. 2, and
Figure 4 is a section through another detail.
A pressure-control valve unit has a threepart housing comprising an upper housing portion 2, a lower housing portion 3 and an intermediate plate 4. The intermediate plate 4 comprises two individual plates 4' and 4" and is manufactured from plastics material by casting or pressing and is disposed between the upper and lower portions of the housing such that it is overlapped by an outer wall 5 of the lower portion 3. Magnetically actuated pilot control valves are disposed in the lower portion 3 of the housing, and pressure-actuated main valves are disposed in the upper portion 2 of the housing. The two-part intermediate plate 4 is provided with pressure medium passages 6, 7 and 8 and its two parts 4' and 4" are welded or glued to one another.
The pressure medium passages 6 and 7 establish communication between respective solenoid valve chambers 9 and 10 in the lower portion 3 of the housing and respective main valve working chambers 11 and 1 2 in the upper portion 2 of the housing. The solenoid valve chambers 9 and 10 are incorporated in the lower portion 4" of the intermediate plate.
Two spigot-like, hollow line portions 1 3 and 1 4 incorporating the pressure medium passages 6 and 7 are formed on the portion 4' of the intermediate plate and extend into the upper portion 2 of the housing and thereby establish a line connection to the working chambers 11 and 1 2 of the main valves The only parts of the main valves which are illustrated are a respective diaphragm sealing member 1 5 and 1 6 and respective covers 1 7 and 1 8 which externally seal the respective working chambers 11 and 1 2.
Fig. 2 shows the engagement of the hollow line portion 1 3 or 14, drawn to a larger scale.
It will be seen that an end 1 9 of the line portion engages a depression 20 in the cover 1 8 such that the cover 1 8 is located in the upper portion 2 of the housing. The connec tion is sealed by means of an O-ring. A circlip 22 serves as the primary means of securing the cover 1 8.
Fig. 3 shows that it is possible to transmit some of the shear forces, which might occur at an end 19' of the line portion, to a pin 23 supported on the intermediate plate 4.
While Figs. 1 to 3 show line portions 13, 1 4 for the passages 6 and 7 which are formed on the intermediate plate portion 4' during manufacture, Fig. 4 shows line portions 24 which are located on the portion 4" of the intermediate plate.
An electrical plug 26 having pins 27 is cast onto the portion 4" of the intermediate plate.
Integrally cast conductors 28 acting as line portions lead from the plug 26 to plug holes 29 into which are plugged conductor tags 30 of the magnets 31 of the solenoid pilot control valves during assembly of the unit. Thus, the resistance to vibration is increased, there is a saving on parts, and it is ensured that the electrical connections cannot be made with incorrect polarity.
Claims (6)
1. A pressure-control valve unit for an anti-skid system for the wheel brakes of a motor vehicle, which unit is to be disposed in use in a brake line between a brake pressure generator and a wheel or two wheel brake cylinders which are associated especially with a common vehicle axle, the said unit comprising a two-position multi-circuit valve common to all the brake cylinders and a respective two port, two position valve for each brake cylinder, which valves act as main valves and are pressure-actuated by pilot control solenoid valves, the pressure-actuated main valves being disposed in an upper portion of a housing and the pilot control valves being disposed in a lower portion of the housing, and a cast or pressed intermediate plate disposed between the upper and lower portions of the housing which plate has pressure medium passages and has line portions which are intended for establishing line connections to the upper portion of the housing and/or the lower portion of the housing.
2. A pressure-control valve unit as claimed in claim 1, in which the line portions which incorporate the pressure medium passages are hollow spigots which project perpendicularly from the intermediate plate and which, upon assembly of the unit in the upper portion of the housing, fittingly engage laterally into valve housing covers.
3. A pressure-control valve unit as claimed in claim 2, in which the line portions form a sealed line connection between the pressure medium passages and the working chambers of the main valves.
4. A pressure-control valve unit as claimed in any of claims 1 to 3, in which the intermediate plate incorporating the line portions is of two-part construction, and that the line portions are let into one of the portions of the plate, or are formed upon joining the portions of the plate together.
5. A pressure-control valve unit as claimed in any of claims 1 to 4, in which the line portions are electrical conductors which have a plug and pins at one end and which are conductively connectible to the magnets of the pilot control solenoid valves upon assembling the unit.
6. A pressure-control valve unit constructed and arranged substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792938437 DE2938437A1 (en) | 1979-09-22 | 1979-09-22 | PRESSURE CONTROL VALVE UNIT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2059018A true GB2059018A (en) | 1981-04-15 |
| GB2059018B GB2059018B (en) | 1984-01-25 |
Family
ID=6081605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8030128A Expired GB2059018B (en) | 1979-09-22 | 1980-09-18 | Pressure-control valve unit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5657545A (en) |
| DE (1) | DE2938437A1 (en) |
| GB (1) | GB2059018B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0266555A1 (en) * | 1986-11-03 | 1988-05-11 | Knorr-Bremse Ag | Pressure control valve for anti-lock devices for vehicles |
| FR2637348A1 (en) * | 1988-10-01 | 1990-04-06 | Teves Gmbh Alfred | VALVE BLOCK FOR A HYDRAULIC VALVE SYSTEM |
| WO2000000372A1 (en) * | 1998-06-30 | 2000-01-06 | Alliedsignal Inc. | Abs modulator for heavy vehicles comprising non flow-through solenoid valves |
| CN102066170A (en) * | 2008-06-17 | 2011-05-18 | 克诺尔商用车制动系统有限公司 | Pressure control valve arrangement having diaphragm valves for controlling a fluid pressure in an ABS brake system of a vehicle, having diaphragms arranged in parallel planes or in coplanar fashion |
| RU2507093C2 (en) * | 2008-06-17 | 2014-02-20 | Кнорр-Бремзе Зюстеме Фюр Нутцфарцойге Гмбх | Restrictor valve with membrane valves for working fluid pressure control in vehicle antiskid system brake with valve seat permanently integrated with valve body from polymer material |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3403839A1 (en) * | 1984-02-03 | 1985-08-08 | Knorr-Bremse GmbH, 8000 München | ANTI-BLOCKING PROTECTION DEVICE FOR THE WHEEL BRAKES OF A VEHICLE, IN PARTICULAR MOTOR VEHICLE |
| DE3813141A1 (en) * | 1988-04-20 | 1989-11-02 | Teves Gmbh Alfred | Valve block assembly |
| DE3881880D1 (en) * | 1987-12-14 | 1993-07-22 | Teves Gmbh Alfred | VALVE BLOCK UNIT. |
| DE3813140A1 (en) * | 1988-04-20 | 1989-11-02 | Teves Gmbh Alfred | Valve-block assembly |
| DE3742830C2 (en) * | 1987-12-17 | 1995-11-16 | Teves Gmbh Alfred | Valve block assembly |
| US4998081A (en) * | 1989-05-18 | 1991-03-05 | Siemens Energy & Automation, Inc. | Power interrupter with force-sensitive contact latch |
| DE3926454C2 (en) * | 1989-08-10 | 1998-02-26 | Teves Gmbh Alfred | Valve block, especially for slip-controlled hydraulic brake systems |
| DE102007049976B4 (en) | 2007-10-18 | 2009-07-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Electropneumatic valve device with pneumatic connections of the solenoid valves directed into the valve block |
| DE102009030900B3 (en) * | 2009-06-29 | 2010-09-16 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Pressure control valve arrangement with an integrally formed on a projection of the cover Druckmittelleitfläche |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2810151A1 (en) * | 1978-03-09 | 1979-09-13 | Bosch Gmbh Robert | PRESSURE CONTROL VALVE UNIT I |
| DE2855876C2 (en) * | 1978-12-22 | 1986-10-23 | Knorr-Bremse AG, 8000 München | Switching valve for anti-lock devices for air brake systems in motor vehicles |
-
1979
- 1979-09-22 DE DE19792938437 patent/DE2938437A1/en not_active Ceased
-
1980
- 1980-09-18 GB GB8030128A patent/GB2059018B/en not_active Expired
- 1980-09-22 JP JP13086480A patent/JPS5657545A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0266555A1 (en) * | 1986-11-03 | 1988-05-11 | Knorr-Bremse Ag | Pressure control valve for anti-lock devices for vehicles |
| FR2637348A1 (en) * | 1988-10-01 | 1990-04-06 | Teves Gmbh Alfred | VALVE BLOCK FOR A HYDRAULIC VALVE SYSTEM |
| WO2000000372A1 (en) * | 1998-06-30 | 2000-01-06 | Alliedsignal Inc. | Abs modulator for heavy vehicles comprising non flow-through solenoid valves |
| CN102066170A (en) * | 2008-06-17 | 2011-05-18 | 克诺尔商用车制动系统有限公司 | Pressure control valve arrangement having diaphragm valves for controlling a fluid pressure in an ABS brake system of a vehicle, having diaphragms arranged in parallel planes or in coplanar fashion |
| RU2507093C2 (en) * | 2008-06-17 | 2014-02-20 | Кнорр-Бремзе Зюстеме Фюр Нутцфарцойге Гмбх | Restrictor valve with membrane valves for working fluid pressure control in vehicle antiskid system brake with valve seat permanently integrated with valve body from polymer material |
| RU2517630C2 (en) * | 2008-06-17 | 2014-05-27 | Кнорр-Бремзе Зюстеме Фюр Нутцфарцойге Гмбх | Restrictor valve for vehicle abs working fluid pressure control and method of its fabrication |
| US9637099B2 (en) | 2008-06-17 | 2017-05-02 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Pressure control valve arrangement having diaphragm valves for controlling a fluid pressure in an ABS brake system of a vehicle, having a valve seat integrated in a unipartite fashion in a plastic housing part |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2938437A1 (en) | 1981-04-09 |
| JPS6327227B2 (en) | 1988-06-02 |
| JPS5657545A (en) | 1981-05-20 |
| GB2059018B (en) | 1984-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |