DE3706396A1 - Load-dependent pressure control valve, especially for motor vehicle brake systems - Google Patents

Load-dependent pressure control valve, especially for motor vehicle brake systems

Info

Publication number
DE3706396A1
DE3706396A1 DE19873706396 DE3706396A DE3706396A1 DE 3706396 A1 DE3706396 A1 DE 3706396A1 DE 19873706396 DE19873706396 DE 19873706396 DE 3706396 A DE3706396 A DE 3706396A DE 3706396 A1 DE3706396 A1 DE 3706396A1
Authority
DE
Germany
Prior art keywords
control valve
pressure control
spring
load
control
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.)
Withdrawn
Application number
DE19873706396
Other languages
German (de)
Inventor
Juergen Schonlau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITT Automotive Europe GmbH
Original Assignee
Alfred Teves GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19863626331 external-priority patent/DE3626331A1/en
Application filed by Alfred Teves GmbH filed Critical Alfred Teves GmbH
Priority to DE19873706396 priority Critical patent/DE3706396A1/en
Publication of DE3706396A1 publication Critical patent/DE3706396A1/en
Withdrawn legal-status Critical Current

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
    • B60T8/18—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 vehicle weight or load, e.g. load distribution
    • B60T8/1837—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 vehicle weight or load, e.g. load distribution characterised by the load-detecting arrangements
    • B60T8/1856—Arrangements for detecting suspension spring load
    • B60T8/1868—Arrangements for detecting suspension spring load comprising sensors of the type providing a mechanical output signal representing the load on the vehicle suspension
    • 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
    • B60T8/18—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 vehicle weight or load, e.g. load distribution
    • B60T8/1806—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 vehicle weight or load, e.g. load distribution characterised by the calibration process or the means therefor
    • 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
    • B60T8/18—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 vehicle weight or load, e.g. load distribution
    • B60T8/1812—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 vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction
    • B60T8/1831—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 vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction pressure reducing or limiting valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

A load-dependent pressure control valve is proposed with a housing 1, a control piston 8, arranged therein so that it is displaceable against a control force, for controlling the connection between an inlet 2 and an outlet 3 and an actuating device, the actuating device in particular being arranged in the free internal space of a chassis spring 10 between two parts movable relative to one another, especially a vehicle body 7 and a vehicle suspension 6. (According to patent application reference P 3626331.1). In order to create a pressure control valve of the said type which has a small number of components and at the same time can be easily and cost-effectively adjusted, it is proposed that the actuating device be designed as a control spring (15), clamped between a first and a second spring mounting (41, 42), flexible means of tensioning (45) being provided as adjusting gauge. <IMAGE>

Description

Die Erfindung betrifft ein lastabhängiges Drucksteuerventil nach dem Oberbegriff des Anspruches 1.The invention relates to a load-dependent pressure control valve according to the preamble of claim 1.

Bei einem Drucksteuerventil nach der Hauptanmeldung ist eine Ansteuervorrichtung vorgesehen, die sich aus vielen, zum Teil aufwendig zu fertigenden Einzelteilen zusammen­ setzt. Des weiteren ist die Einstellung der Ansteuervor­ richtung sehr kompliziert und unkomfortabel.With a pressure control valve after the main filing a control device is provided, which consists of many some parts that are difficult to manufacture together puts. Furthermore, the setting is the control direction very complicated and uncomfortable.

Der Erfindung liegt daher die Aufgabe zugrunde, ein gattungsgemäßes lastabhängiges Drucksteuerventil vorzu­ schlagen, welches eine geringe Anzahl unkomplizierter Teile aufweist und dabei einfach und kostengünstig einstellbar ist.The invention is therefore based on the object Generic load-dependent pressure control valve vorzu beat which is a small number of uncomplicated parts has and easily and inexpensively adjustable is.

Diese Aufgabe wird erfindungsgemäß durch die kenn­ zeichnenden Merkmale des Anspruches 1 gelöst.This object is achieved by the kenn Drawing features of claim 1 solved.

Die Erfindung ermöglicht eine komplette Vormontage und Vor­ einstellung des Drucksteuerventils. Dadurch wird in hohem Maße die automatisierte Montage durch Roboter unterstützt.The invention enables complete pre-assembly and pre-assembly adjustment of the pressure control valve. This will result in high Automated assembly supported by robots.

Um bei der Montage des Drucksteuerventils eventuelle Längentoleranzen, beispielsweise der Fahrwerksfeder, ausgleichen zu können, ist vorgesehen, daß das Gehäuse des Drucksteuerventils in axialer Richtung verstellbar ist.In order to avoid any possible problems when installing the pressure control valve Length tolerances, for example the suspension spring,  to be able to compensate, it is provided that the housing of the Pressure control valve is adjustable in the axial direction.

Die Funktion und weitere Vorteile der Erfindung gehen aus der Beschreibung eines bevorzugt ausgeführten Anwendungs­ beispieles hervor. Dazu zeigt die einzige Figur den Längs­ schnitt durch ein erfindungsgemäßes Drucksteuerventil.The function and further advantages of the invention are based the description of a preferred application example. The only figure shows the lengthways cut through an inventive pressure control valve.

Das Drucksteuerventil weist ein Gehäuse 1 mit mehrfach ge­ stufter, axial verlaufender Hauptbohrung auf, in die eine Reglerpatrone, wie sie aus der Patentanmeldung mit dem amt­ lichen Aktenzeichen P 36 14 798.2 bekannt ist, mit einem Verschlußstück 5 verschraubt ist. Des weiteren weist das Gehäuse 1 Bohrungen für den Einlaß 2 und den Auslaß 3 auf. Das Gehäuse 1 ist auf seiner zylindrischen Außenfläche mit einem Gewinde versehen, womit es mittels einer an der Fahr­ zeugaufhängung befestigten Einstellmutter 46 verschraubt ist. Hierzu ist in einem nach oben eingesickten Bereich der Fahrzeugaufhängung 6, welcher die Fahrwerksfeder 10 am Innendurchmesser zentriert, eine Ausnehmung, welche die Einstellmutter 46 aufnimmt, vorgesehen, durch welche das Gehäuse 1 von unten eingeschraubt werden kann.The pressure control valve has a housing 1 with multiple ge graded, axially extending main bore into which a regulator cartridge, as is known from the patent application with the official file number P 36 14 798.2, is screwed to a closure piece 5 . Furthermore, the housing 1 has bores for the inlet 2 and the outlet 3 . The housing 1 is provided on its cylindrical outer surface with a thread, with which it is screwed by means of an adjusting nut 46 attached to the vehicle suspension. For this purpose, a recess, which receives the adjusting nut 46 , is provided in an area of the vehicle suspension 6 which is sunk upwards and which centers the chassis spring 10 , through which the housing 1 can be screwed in from below.

Die Fahrwerksfeder 10 stützt sich mit ihrem anderen Ende an dem Fahrzeugaufbau 7 ab, welcher einen nach unten umge­ stülpten Bereich aufweist, der die Fahrwerksfeder 10 an ihrem Außendurchmesser zentriert. Um die Gleitflächen des Steuerkolbens 8 vor Schmutz zu schützen, ist eine Gummi­ manschette 9 vorgesehen, welche in entsprechende Aus­ nehmungen am Verschlußstück 5 einerseits und am Steuer­ kolben 8 andererseits eingeknüpft ist. The coil spring 10 is supported with its other end on the vehicle body 7 , which has a downwardly inverted area which centers the coil spring 10 on its outer diameter. To the sliding surfaces of the control piston 8 to protect from dirt, a rubber cuff 9 is provided, which recesses in respective ones of the closure member 5 on the one hand and on the control piston 8 on the other hand knotted.

Zwischen dem aus dem Verschlußstück 5 herausragenden Ende des Steuerkolbens 8 und dem Fahrzeugaufbau 7 befindet sich die Ansteuervorrichtung, die den Steuerkolben 8 in Ab­ hängigkeit von der Einfederung der Fahrwerksfeder 10 beauf­ schlagt. Die Ansteuervorrichtung weist eine Steuerfeder 15 auf, die sich in vorgespanntem Zustand zwischen dem ersten und dem zweiten Federaufnahmeteil 41 und 42 befindet. Die Vorspannung der Steuerfeder 15 wird durch ein flexibles Zugmittel 45, in diesem Fall eine Stahldrahtlitze, einge­ stellt, das den Maximalabstand der beiden Federaufnahme­ teile 41 und 42 zueinander begrenzt.Between the protruding from the closure piece 5 end of the control piston 8 and the vehicle body 7 is the control device, which strikes the control piston 8 in dependence on the deflection of the coil spring 10 bet. The control device has a control spring 15 which is in the prestressed state between the first and the second spring receiving parts 41 and 42 . The bias of the control spring 15 is by a flexible traction means 45 , in this case a steel wire strand, is that the maximum distance between the two spring receiving parts 41 and 42 limits each other.

Die gestuft ausgeführten, tellerförmigen Federaufnahmeteile 41, 42 sind mit je einer Zentralbohrung versehen, durch welche die Endstücke der Stahldrahtlitze geführt sind, die auf den von der Steuerfeder 15 abgewandten Seiten der Federaufnahmeteile mit jeweils einem Nippel 48, 49 ver­ preßt sind. Die Stahldrahtlitze dient somit als am Regler verbleibende Lehre zur Einstellug der Vorspannung der Steuerfeder 15.The stepped, plate-shaped spring receiving parts 41, 42 are each provided with a central bore through which the end pieces of the steel wire strand are guided, which are pressed ver on the sides of the spring receiving parts facing away from the control spring 15, each with a nipple 48, 49 . The steel wire strand thus serves as a teaching remaining on the controller for adjusting the pretension of the control spring 15 .

Das erste Federaufnahmeteil 41 ist auf dem aus dem Ver­ schlußstück 5 ragenden Ende des Steuerkolbens 8 befestigt und umgibt dieses teilweise. Das zweite Federaufnahmeteil 42 wird von der schalenförmigen Zwischenplatte 50 teilweise umfaßt und gegen radiale Verschiebung gesichert.The first spring receiving part 41 is fastened to the end of the control piston 8 projecting from the connecting piece 5 and partially surrounds it. The second spring receiving part 42 is partially surrounded by the shell-shaped intermediate plate 50 and secured against radial displacement.

Beim Einbau des Druckregelventils wird das Gehäuse 1 so weit in die Einstellmutter 46 geschraubt, bis das zweite Federaufnahmeteil 42 an der Zwischenplatte 50 zum Anliegen kommt. Bei Einfederung der Fahrwerksfeder 10 wird auch die Steuerfeder 15 komprimiert, wodurch der Umschaltdruck des Druckregelventils in Abhängigkeit von der Belastung variiert wird.When installing the pressure control valve, the housing 1 is screwed into the adjusting nut 46 until the second spring receiving part 42 comes to rest on the intermediate plate 50 . When the suspension spring 10 is deflected, the control spring 15 is also compressed, as a result of which the changeover pressure of the pressure control valve is varied as a function of the load.

Claims (2)

1. Lastabhängiges Drucksteuerventil, insbesondere für Kraftfahrzeugbremssysteme, mit einem Gehäuse, einem darin gegen eine Steuerkraft verschiebbar angeordneten Steuerkolben zum Steuern der Verbindung zwischen einem Einlaß und einem Auslaß, sowie eine Ansteuervor­ richtung, wobei insbesondere die Ansteuervorrichtung im freien Innenraum einer Fahrwerksfeder zwischen zwei relativ zueinander beweglichen Teilen, insbesondere einem Fahrzeugaufbau und einer Fahrzeugaufhängung, angeordnet ist, gemäß Patentanmeldung Aktenzeichen P 36 26 331.1, dadurch gekennzeichnet, daß die Ansteuervorrichtung, die sich einerseits am Steuerkolben (8) und andererseits an einem der beiden relativ zueinander beweglichen Teile abstützt, als eine zwischen einem ersten und einem zweiten Federaufnahmeteil (41, 42) eingespannte Steuerfeder (15) ausgebildet ist, wobei ein flexibles Zugmittel (45), (beispielsweise ein Seil, ein Draht, eine Drahtlitze oder eine Kette) als Einstellehre vorgesehen ist.1. Load-dependent pressure control valve, in particular for motor vehicle brake systems, with a housing, a control piston arranged therein displaceably against a control force for controlling the connection between an inlet and an outlet, and a control device, in particular the control device in the free interior of a coil spring between two relative to one another movable parts, in particular a vehicle body and a vehicle suspension, is arranged according to patent application file number P 36 26 331.1, characterized in that the control device, which is supported on the one hand on the control piston ( 8 ) and on the other hand on one of the two parts which are movable relative to one another, as one between a first and a second spring receiving part ( 41, 42 ) clamped control spring ( 15 ) is formed, a flexible traction means ( 45 ) (for example a rope, a wire, a wire strand or a chain) being provided as a setting gauge. 2. Lastabhängiges Drucksteuerventil nach Anspruch 1, dadurch gekennzeichnet, daß das Gehäuse (1) in axialer Richtung einstellbar ist.2. Load-dependent pressure control valve according to claim 1, characterized in that the housing ( 1 ) is adjustable in the axial direction.
DE19873706396 1986-08-02 1987-02-27 Load-dependent pressure control valve, especially for motor vehicle brake systems Withdrawn DE3706396A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873706396 DE3706396A1 (en) 1986-08-02 1987-02-27 Load-dependent pressure control valve, especially for motor vehicle brake systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863626331 DE3626331A1 (en) 1986-08-02 1986-08-02 Load-dependent pressure control valve, especially for motor vehicle brake systems
DE19873706396 DE3706396A1 (en) 1986-08-02 1987-02-27 Load-dependent pressure control valve, especially for motor vehicle brake systems

Publications (1)

Publication Number Publication Date
DE3706396A1 true DE3706396A1 (en) 1988-09-08

Family

ID=25846211

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873706396 Withdrawn DE3706396A1 (en) 1986-08-02 1987-02-27 Load-dependent pressure control valve, especially for motor vehicle brake systems

Country Status (1)

Country Link
DE (1) DE3706396A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5080446A (en) * 1989-09-19 1992-01-14 Tokico Ltd. Hydraulic pressure control device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1861385U (en) * 1962-03-10 1962-10-31 Bosch Gmbh Robert BRAKE FORCE REGULATOR, IN PARTICULAR FOR MOTOR VEHICLES.
US4150855A (en) * 1977-10-28 1979-04-24 General Motors Corporation Vehicle load responsive brake actuating pressure proportioner and actuating linkage therefor
DE3220030A1 (en) * 1981-05-29 1982-12-16 Lucas Industries P.L.C., Birmingham, West Midlands Control valve arrangement for controlling fluid pressure fed to fluid-actuated vehicle brakes
DE3427807A1 (en) * 1983-07-29 1985-02-07 Lucas Industries P.L.C., Birmingham, West Midlands LOAD-RELATED PRESSURE CONTROL VALVE FOR VEHICLES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1861385U (en) * 1962-03-10 1962-10-31 Bosch Gmbh Robert BRAKE FORCE REGULATOR, IN PARTICULAR FOR MOTOR VEHICLES.
US4150855A (en) * 1977-10-28 1979-04-24 General Motors Corporation Vehicle load responsive brake actuating pressure proportioner and actuating linkage therefor
DE3220030A1 (en) * 1981-05-29 1982-12-16 Lucas Industries P.L.C., Birmingham, West Midlands Control valve arrangement for controlling fluid pressure fed to fluid-actuated vehicle brakes
DE3427807A1 (en) * 1983-07-29 1985-02-07 Lucas Industries P.L.C., Birmingham, West Midlands LOAD-RELATED PRESSURE CONTROL VALVE FOR VEHICLES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5080446A (en) * 1989-09-19 1992-01-14 Tokico Ltd. Hydraulic pressure control device

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