WO2007057438A1 - Hydraulic valve - Google Patents

Hydraulic valve Download PDF

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Publication number
WO2007057438A1
WO2007057438A1 PCT/EP2006/068593 EP2006068593W WO2007057438A1 WO 2007057438 A1 WO2007057438 A1 WO 2007057438A1 EP 2006068593 W EP2006068593 W EP 2006068593W WO 2007057438 A1 WO2007057438 A1 WO 2007057438A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
magnetic coil
valve housing
housing
armature
Prior art date
Application number
PCT/EP2006/068593
Other languages
German (de)
French (fr)
Inventor
Christoph Voss
Harald Biller
Original Assignee
Continental Teves Ag & Co. Ohg
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
Application filed by Continental Teves Ag & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Publication of WO2007057438A1 publication Critical patent/WO2007057438A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/50Arrangements 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 having means for controlling the rate at which pressure is reapplied to or released from the brake
    • B60T8/5018Pressure reapplication using restrictions
    • B60T8/5025Pressure reapplication using restrictions in hydraulic brake systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/36Arrangements 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
    • B60T8/3615Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644One-way valve
    • F16K31/0651One-way valve the fluid passing through the solenoid coil
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16Rectilinearly-movable armatures
    • H01F7/1607Armatures entering the winding

Definitions

  • the invention relates to a hydraulic valve according to the preamble of patent claim 1.
  • the valve housing receives a cooperating with a magnet armature valve closure member which is directed to a valve seat in the valve housing.
  • a magnet coil is provided which is arranged outside a sleeve-shaped, non-magnetic valve housing section. Due to the non-magnetic valve housing portion results in a relatively large construction cost and an undesirably large magnetic resistance at the same time a large radial gap extending between the armature and the valve housing.
  • the proposed construction does not allow any reduction in the overall height.
  • FIG. 1 shows an embodiment of the subject invention in the form of a closed in the basic position hydraulic valve
  • FIG. 2 shows an embodiment of the subject invention in the form of a normally open hydraulic valve
  • Figure 3 is a designed as a two-stage valve hydraulic valve in its closed position.
  • Each illustrated in longitudinal section, designed as a 2/2-way valve seat hydraulic valve has a designed in cartridge design valve housing 6 which receives a actuatable by a magnetic armature 3 valve closure member 14 which is concentrically directed to a valve seat 8 in the valve housing 6.
  • a solenoid 1 is integrated directly into the valve housing 6 for actuating the magnet armature 3, which is arranged in a magnetic flux conducting portion 5 of the valve housing 6 and is fixedly connected to this section 5.
  • an axial gap 2 is provided, which is bridged as well as a provided between a lateral surface of the armature 3 and the valve housing 6 radial gap 4 during electromagnetic excitation of magnetic field lines.
  • the valve housing 6 has a magnetic flux conducting further section 7, the liquid-tightly abuts the front side of the magnetic portion 5, wherein the further portion 7 in the lower region of the valve seat 8 and a few pressure medium channels 9, 10 receives.
  • Both sections 5, 7 of the valve housing 6 are designed as firmly connected to each other cartridge-shaped housing halves, in which advantageously the magnetic coil 1 according to the principle of a plunger space-optimized and integrated low resistance with respect to the magnetic field.
  • the solenoid coil 1 is therefore exposed via the pressure medium channels 9, 10 of the in the valve housing 6 under pressure as well as outflowing liquid.
  • At least one of the two cartridge-shaped sections 5, 7 of the valve housing 6, which are designed thick-walled for use in high-pressure hydraulic systems, has for integrating the magnetic coil 1 adapted to the magnetic coil recess 24, in which the solenoid 1 is well received, securely fastened and in the area its inner periphery is acted upon directly by the liquid flowing through the valve housing 6, provided that as a result of the open position of the valve closing member 14, a corresponding pressure supply into the valve housing 6 takes place.
  • the magnet armature 3 thus immersed liquid-flushed in sections in the magnetic coil 1, which is integrated according to Fig. 1-3 in each case in the recess 24 of the section 5.
  • valve housing 6 thus consists only of two cartridge halves, the upper half of the housing is formed by the recess 24 provided with the section 5 and the lower half of the housing through the further section 7, the Valve seat 8 carries.
  • Both sections 5, 7 have, in all embodiments, mutually facing, annular disk-shaped end surfaces, which are connected to each other in a liquid-tight manner by means of a circumferential weld 21.
  • a sealing washer 15 is inserted, which advantageously the liquid-tight from the magnetic coil 1 protruding electrical contact 23 in the direction of the passage opening 13 in the valve housing 6 surrounds.
  • the coil turns and connected to the coil turns contact 23 of the magnetic coil 1 are liquid-tight on all sides surrounded by a plastic, which forms the bobbin.
  • the magnet coil 1 is either fixed in the recess 24 of the section 5 or fixed frictionally or positively via the plastic jacket of the contact 23 in the passage opening 13 of the valve housing 6.
  • the armature 3 has a height / width ratio, the amount equal to or forth is less than one, so that in practice the height of the magnet armature 3 does not necessarily exceed the outer diameter of the magnet armature 3.
  • the recess 24 having portion 5 is formed as a cold impact part, the contour of which can be produced automatically by cold striking a magnetic flux conducting blank from which in a single operation advantageously the outside as well which is formed for receiving the magnetic coil 1 required inner contour.
  • valve seat sleeve 26 having further portion 7 of the valve housing 6 is made as a cold-formed part of a tubular blank whose outer contour has a housing stage with an annular groove 12, in which for the attachment and sealing of the further portion 7 in the valve block 11 with respect to the section 7 softer Material of the valve block 11 is plastically displaced.
  • the magnetic flux conducting two-piece valve housing 6 thus consists in all embodiments of a preferably prepared by cold striking or extrusion of steel blank, so that is dispensed with the previously known from the prior art different machining and deep drawing manufacturing processes for the items of the valve body 6.
  • the magnet armature 3 can also be produced in a simplified manner by extrusion or cold striking.
  • all of the hydraulic valves depicted in FIGS. 1-3 have a filter element 31 arranged at the lower, cone-shaped stepped end of the section 7, which is designed as a ring filter element and prevents dirt from entering the generally calibrated pressure medium channel 9.
  • a filter element 31 arranged at the lower, cone-shaped stepped end of the section 7, which is designed as a ring filter element and prevents dirt from entering the generally calibrated pressure medium channel 9.
  • To reduce the valve height of the pressure medium channel 9 is in Fig. 1, 2 immediately parallel to the pressure medium channel 10 in an intermediate bottom above the peg-shaped stepped (further) section 7 inserted, which is reduced in diameter at the lower pin-shaped end so far that he with relatively low insertion force at the bottom of the valve receiving bore 30 in a channel bore (valve port 39 in Fig.l) or in a valve seat plate 43 (see FIG. 2) sealingly extends.
  • the magnetic core is formed for the closed in the basic position hydraulic valves according to Figures 1 and 3 in section 5 by a centrally formed to the valve longitudinal axis cylinder projection 25 into which from the direction of the axial gap 2, a blind bore 16 opens, which receives a compression spring 17, which between the End face of the armature 3 and the end of the blind bore 16 is clamped, whereby in the basic valve position of the armature 3 rests with the valve closure member 14 on the valve seat 8.
  • the closed in Figure 1 in the basic position hydraulic valve has on the side remote from the compression spring 17 end face of the armature 3, a spherical valve closure member 14 which is pressed under the action of the compression spring 17 against the funnel-shaped valve seat 8.
  • the valve closure member 14 is sunk centrally by means of a capacitor weld in a blind bore 37 of the armature 3.
  • the valve seat sleeve 26 extends with a small clearance in the blind bore 37 so that the armature 3 on the valve seat sleeve 26 has an internal centering.
  • the lateral surface of the blind bore 37 has a longitudinal groove 36, so that in the electromagnetically open valve position a cross-section sufficiently large, low-resistance hydraulic connection between the two valve ports 39 is ensured in the valve block 11.
  • the section 5 at its upper end face on an adapted to the diameter of the magnet armature 3 opening, which is closed by a flat, thin-walled cover 41.
  • the cover 41 has in the middle a sleeve-shaped projection 42 which extends to center the magnet armature 3 in the valve housing 6 in an opening of the armature 3.
  • the contour of the lid 41 is inexpensively manufactured by deep drawing of thin sheet.
  • the lid 41 is liquid-tightly attached to the section 5 by means of a welded connection.
  • valve seat plate 43 To prevent a short-circuit current between the longitudinally and transversely the block-shaped housing 11 in the direction of the valve receiving bore 30 penetrating valve ports 39 is in the embodiment of FIG. 2 between the bottom of the valve receiving bore 30 and arranged on the journal-shaped end of the cup-shaped portion 7 valve seat plate 43 an elastomeric ring seal 32 inserted. Between the valve seat plate 43 and a plate filter 44 pressed into it, there is a check valve 45 which releases a bypass opening 48 in the valve seat plate 43, so that a connection between the valve connections 39 is possible independently of the position of the valve closure member 14.
  • FIG. 3 shows, based on the hydraulic valve according to FIG. 1, a hydraulic valve designed as a two-stage valve and closed in its basic position. It differs from Figure 1 in that the valve seat 8 is not arranged in the valve seat sleeve 26 of the section 7, but on a liftable valve piston 28 which is disposed within an axially movable driver 18 which is slidably guided for Magnetankerzentritation on the circumference of the valve seat sleeve 26 , In order to keep the overall height as low as possible, the carrier designed as a stepped sleeve 18 and the hub 18 of the valve piston 28 arranged in the liftably extends partially sunk in the already known from Figure 1 blind bore 37 of the armature 3.
  • valve piston 28 is thus preceded by the valve closing member 14 in series, which is not rigidly connected to the armature 3, unlike the hydraulic valve of Figure 1, but arranged as a plunger within the through hole relatively movable to the armature 3 and guided in a cap 38 adjacent to the through hole is that has a pressure compensation bore 35.
  • the cap 38 is fastened to the upper side of the magnet armature 3, on which the compression spring 17 inserted in the blind bore 16 in the section 5 is supported.
  • valve closure member 14 which is analogous 3 also extends to the bore 33 in Figure 2 on the valve seat 8, which is now part of the axially movable in the armature 3 valve piston 28.
  • valve piston 28 closes in the electromagnetically non-energized magnet armature under the action of the compression spring 17 another disposed in the valve seat sleeve 26 valve seat 29, which has a significantly larger valve seat surface relative to the valve seat 8.
  • the arranged between the driver 18 and the shaft end of the valve piston 28 compression spring 19 is dimensioned such that when electromagnetic excitation of the armature 3 of the valve piston 28 can remain on the valve closing member 14, as long as the valve piston 28 is not hydraulically pressure balanced.
  • the valve closing member 14 acts as a pilot stage and only relative to the effective as a main stage large valve seat 29 a relatively small throttle area 40 within the valve piston 28 free, so that the volume flow is largely determined by the hydraulically initiated position of the valve piston 28, including the valve piston 28 from the valve seat 29th is lifted off.
  • the magnet armature 3 is guided on the one hand by the driver 18 on the valve seat sleeve 26, on the other hand by a directed into the radial gap 4 annular disc 49 precisely in the valve housing 6.
  • the annular disc 49 is for this purpose inserted between the magnetic coil 1 and the section 7.
  • non-electromagnetically excited Ven- til too take due to the closing force of the compression spring 17 whose spring force is larger than the force of the oppositely acting compression spring 19, both valve closing body (valve closure member 14, 28) their valve closing positions.
  • the push-type valve closing member 14 bears against the end wall on the inner wall of the cap 38 and presses the sleeve-shaped valve closing member 28 onto the valve seat 29.
  • the illustrated hydraulic valves are preferably used in a slip-controlled brake system, there are generally no constant hydraulic pressures in the pressure medium inlet (horizontal valve connection 39 ) and Druckschauslass (vertical valve port 39) before, wherein the pressure in the pressure medium inlet usually predominates.
  • the magnet armature 3 initially compresses the compression spring 17 until the abutment of the tappet stage 46 mounted on the valve arm 4 on the armature 3 returns a partial lift X1. During this partial stroke thus the hydraulically not pressure-balanced valve closing member 14 remains under the action of the hydraulic pressure in the illustrated closed position on the valve piston 28.
  • valve piston 28 is also supported by the compression spring 19 and the sleeve-shaped driver 18 to open the throttle-free large cross section on the valve seat 29 can.
  • a hydraulic pressure equalization is established within the valve housing 6, which facilitates the lifting of the valve closure member 28 from the valve seat 29.
  • valve closing member 28 takes place as soon as the end face of the armature 3 rigidly connected driver 18 contacts the collar 50 of the hollow piston-shaped valve closure member 38, wherein the compression spring 19, the valve closing member 28 on the forced by the driver 18 stroke of the valve seat 29 in addition so that it is able to lift completely as soon as the hydraulic pressure equalization has taken place via the throttle cross-section 40.
  • the advantage of the telescopic arrangement of the two valve closing members 14, 28 in the armature 3 is thus that in a electromagnetically initiated lifting movement of the armature 3 is initially covered until the armature 3 at the plunger stage of the valve closing member 14 is already a partial stroke of the armature 3, the required for opening the valve closing member 28 stroke and thus also significantly reduced by the magnetic field to be bridged axial gap 2, so that after the pressure equalization over the Throttle bore 40 with a relatively low magnetic force designed for a large volume flow rate valve closure member 28 via the driver 18 from the valve seat 29 can be lifted accordingly.
  • the presented hydraulic valves are preferably used in a slip-controlled motor vehicle brake system, for which the valve block 11 shown only in sections has a plurality of valve receiving bores 30, which are shown in several rows for receiving the illustrated two-stage valve and the illustrated normally closed and normally open hydraulic valves in the valve block 11 are admitted.
  • the illustrated hydraulic valves in this case fulfill the function of selectively influencing the Bremstikauf- and the brake pressure reduction in the wheel brakes in the slip rule by means of a suitable control electronics, which preferably rests directly flat and thus extremely compact on the top of the hydraulic valves.
  • the result of the proposed features according to the invention is a particularly short hydraulic valve in various embodiments with a comparison with the previously known valves increased magnetic force, since the radial gap 4 is particularly small due to the valve design described.
  • the inventively proposed hydraulic valves can be completely submerged as needed in the valve block 11, which is ensured by the complete integration of the solenoid coil 1 in the valve housing 6 and due to the extensive integration capacity of the valve housing 6 in the channel-guiding valve block 11 excellent heat dissipation for the magnetic drive.
  • the complete integration of the hydraulic valves in the block-shaped housing 11 not only facilitates the arrangement of a control electronics required for the activation of the hydraulic valves, which is preferably arranged directly on the surface of the section 5, from which the contacts 23 of the magnetic coil 1 protrude, but ensures a Good heat dissipation for the control electronics, as the section 5 and the valve block preferably made of a light metal alloy 11 act as a heat sink or large-sized cooling surface.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention relates to a hydraulic valve, having a valve housing (6) which holds a valve closing member (14) which interacts with a magnet armature (3) and is aligned towards a valve seat (8) in the valve housing (6), and having a magnet coil (1) which serves to actuate the magnet armature (3) and is fixedly connected to a section (5), which conducts the magnetic flux, of the valve housing (6), wherein in order to reduce the magnetic resistance, the magnet coil (1) directly adjoins the magnet armature (3), whereby the magnet coil (1) is exposed to a liquid which can be introduced into and discharged from the valve housing (6) via pressure medium ducts (9, 10).

Description

Hydraulikventilhydraulic valve
Die Erfindung betrifft ein Hydraulikventil nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a hydraulic valve according to the preamble of patent claim 1.
Aus der DE 102 54 342 Al ist bereits ein derartiges Hydraulikventil bekannt geworden, dessen Ventilgehäuse ein mit einem Magnetanker zusammenwirkendes Ventilschließglied aufnimmt, das auf einen Ventilsitz im Ventilgehäuse gerichtet ist. Zur Betätigung des Magnetankers ist eine Magnetspule vorgesehen, die außerhalb eines hülsenförmigen, nicht magnetischen Ventilgehäuseabschnitts angeordnet ist. Infolge des nicht magnetischen Ventilgehäuseabschnitts ergibt sich ein verhältnismäßig großer Bauaufwand sowie ein unerwünscht großer magnetischer Widerstand bei gleichzeitig großem Radialspalt, der sich zwischen dem Magnetanker und dem Ventilgehäuse erstreckt. Die vorgestellte Konstruktion lässt überdies auch keine Reduzierung der Bauhöhe zu.From DE 102 54 342 Al, such a hydraulic valve is already known, the valve housing receives a cooperating with a magnet armature valve closure member which is directed to a valve seat in the valve housing. For actuating the magnet armature, a magnet coil is provided which is arranged outside a sleeve-shaped, non-magnetic valve housing section. Due to the non-magnetic valve housing portion results in a relatively large construction cost and an undesirably large magnetic resistance at the same time a large radial gap extending between the armature and the valve housing. Moreover, the proposed construction does not allow any reduction in the overall height.
Daher ist es die Aufgabe der vorliegenden Erfindung, ein Hydraulikventil der angegebenen Art derart zu verbessern, dass die vorgenannten Nachteile vermieden werden.Therefore, it is the object of the present invention to improve a hydraulic valve of the specified type such that the aforementioned disadvantages are avoided.
Diese Aufgabe wird erfindungsgemäß für ein Hydraulikventil der angegebenen Art mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.This object is achieved for a hydraulic valve of the type indicated with the characterizing features of claim 1.
Weitere Merkmale und Vorteile der Erfindung gehen im Folgenden aus der Beschreibung mehrerer Ausführungsbeispiele hervor . Es z e igen :Further features and advantages of the invention will become apparent hereinafter from the description of several embodiments. Show it :
Figur 1 eine Ausführung des Erfindungsgegenstands in Form eines in Grundstellung geschlossenen Hydraulikventils,1 shows an embodiment of the subject invention in the form of a closed in the basic position hydraulic valve,
Figur 2 eine Ausführung des Erfindungsgegenstands in Form eines in Grundstellung geöffneten Hydraulikventils,2 shows an embodiment of the subject invention in the form of a normally open hydraulic valve,
Figur 3 ein als Zweistufenventil ausgeführtes Hydraulikventil in seiner geschlossenen Grundstellung.Figure 3 is a designed as a two-stage valve hydraulic valve in its closed position.
Bevor auf alle aus den Figuren 1-3 ersichtlichen Details eingegangen wird, sollen zunächst die Gemeinsamkeiten der abgebildeten Hydraulikventile und die wesentlichen Merkmale der Erfindung erläutert werden.Before discussing all of the details shown in FIGS. 1-3, the similarities of the illustrated hydraulic valves and the essential features of the invention will first be explained.
Jedes im Längsschnitt abgebildete, als 2/2-Wege-Sitzventil ausgelegte Hydraulikventil weist ein in Patronenbauweise ausgeführtes Ventilgehäuse 6 auf, welches ein von einem Magnetanker 3 betätigbares Ventilschließglied 14 aufnimmt, das konzentrisch auf einen Ventilsitz 8 im Ventilgehäuse 6 gerichtet ist.Each illustrated in longitudinal section, designed as a 2/2-way valve seat hydraulic valve has a designed in cartridge design valve housing 6 which receives a actuatable by a magnetic armature 3 valve closure member 14 which is concentrically directed to a valve seat 8 in the valve housing 6.
Erfindungsgemäß ist zur Betätigung des Magnetankers 3 eine Magnetspule 1 direkt im Ventilgehäuse 6 integriert, die in einem den Magnetfluss leitenden Abschnitt 5 des Ventilgehäuses 6 angeordnet ist und mit diesem Abschnitt 5 fest verbunden ist. Zwischen dem magnetischen Abschnitt 5 und einer Stirnfläche des Magnetankers 3 ist ein Axialspalt 2 vorgesehen, der ebenso wie ein zwischen einer Mantelfläche des Magnetankers 3 und dem Ventilgehäuse 6 vorgesehenen Radialspalt 4 während einer elektromagnetischen Erregung von Magnetfeldlinien überbrückt ist. Ferner weist das Ventilgehäuse 6 einen den Magnetfluss leitenden weiteren Abschnitt 7 auf, der stirnseitig am magnetischen Abschnitt 5 flüssigkeitsdicht anliegt, wobei der weitere Abschnitt 7 im unteren Bereich den Ventilsitz 8 und ein paar Druckmittelkanäle 9, 10 aufnimmt.According to the invention, a solenoid 1 is integrated directly into the valve housing 6 for actuating the magnet armature 3, which is arranged in a magnetic flux conducting portion 5 of the valve housing 6 and is fixedly connected to this section 5. Between the magnetic portion 5 and an end face of the armature 3, an axial gap 2 is provided, which is bridged as well as a provided between a lateral surface of the armature 3 and the valve housing 6 radial gap 4 during electromagnetic excitation of magnetic field lines. Further, the valve housing 6 has a magnetic flux conducting further section 7, the liquid-tightly abuts the front side of the magnetic portion 5, wherein the further portion 7 in the lower region of the valve seat 8 and a few pressure medium channels 9, 10 receives.
Beide Abschnitte 5, 7 des Ventilgehäuses 6 sind als miteinander fest verbundene patronenförmige Gehäusehälften ausgeführt, in denen vorteilhaft die Magnetspule 1 nach dem Prinzip einer Tauchspule bauraumoptimiert und bezüglich dem Magnetfeld widerstandsarm integriert ist. Die Magnetspule 1 ist daher über die Druckmittelkanäle 9, 10 der in das Ventilgehäuse 6 unter Druck ein- als auch ausströmenden Flüssigkeit ausgesetzt .Both sections 5, 7 of the valve housing 6 are designed as firmly connected to each other cartridge-shaped housing halves, in which advantageously the magnetic coil 1 according to the principle of a plunger space-optimized and integrated low resistance with respect to the magnetic field. The solenoid coil 1 is therefore exposed via the pressure medium channels 9, 10 of the in the valve housing 6 under pressure as well as outflowing liquid.
Zumindest einer der beiden patronenförmigen Abschnitte 5, 7 des Ventilgehäuses 6, die zum Einsatz in Hochdruckhydrauliksystemen dickwandig ausgeführt sind, weist zur Integration der Magnetspule 1 eine an die Magnetspulenkontur angepasste Ausnehmung 24 auf, in der die Magnetspule 1 gut aufgenommen, sicher befestigt und im Bereich ihres Innenumfangs von der das Ventilgehäuse 6 durchströmenden Flüssigkeit direkt beaufschlagt ist, sofern infolge der Offenstellung des Ventilschließgliedes 14 eine entsprechende Druckzufuhr in das Ventilgehäuse 6 erfolgt. Der Magnetanker 3 taucht somit flüs- sigkeitsumspült abschnittsweise in die Magnetspule 1 ein, die nach Fig. 1-3 jeweils in der Ausnehmung 24 des Abschnitts 5 integriert ist.At least one of the two cartridge-shaped sections 5, 7 of the valve housing 6, which are designed thick-walled for use in high-pressure hydraulic systems, has for integrating the magnetic coil 1 adapted to the magnetic coil recess 24, in which the solenoid 1 is well received, securely fastened and in the area its inner periphery is acted upon directly by the liquid flowing through the valve housing 6, provided that as a result of the open position of the valve closing member 14, a corresponding pressure supply into the valve housing 6 takes place. The magnet armature 3 thus immersed liquid-flushed in sections in the magnetic coil 1, which is integrated according to Fig. 1-3 in each case in the recess 24 of the section 5.
Das in Form einer Patrone in einen Ventilblock 11 eingesetzte Ventilgehäuse 6 besteht somit lediglich aus zwei Patronenhälften, wobei die obere Gehäusehälfte durch den mit der Ausnehmung 24 versehene Abschnitt 5 und die untere Gehäusehälfte durch den weiteren Abschnitt 7 gebildet ist, der den Ventilsitz 8 trägt. Beide Abschnitte 5, 7 weisen in allen Ausführungsbeispielen aufeinander zugewandte, ringscheibenförmige Stirnflächen auf, die mittels einer umlaufenden Schweißnaht 21 flüssigkeitsdicht miteinander verbunden sind.The inserted in the form of a cartridge in a valve block 11 valve housing 6 thus consists only of two cartridge halves, the upper half of the housing is formed by the recess 24 provided with the section 5 and the lower half of the housing through the further section 7, the Valve seat 8 carries. Both sections 5, 7 have, in all embodiments, mutually facing, annular disk-shaped end surfaces, which are connected to each other in a liquid-tight manner by means of a circumferential weld 21.
Die bisher aus dem Stand der Technik bekannte zusätzliche Anordnung, Befestigung sowie Abdichtung einer das Ventilgehäuse verschließenden Ventilhülse, auf der die Magnetspule bisher befestigt werden musste, entfällt somit gänzlich.The previously known from the prior art additional arrangement, attachment and sealing of a valve housing closing valve sleeve on which the solenoid had previously had to be fixed, thus eliminating entirely.
Zur elektrischen Energieversorgung der Magnetspule 1 ist der die Magnetspule 1 aufnehmende Abschnitt 5 mit einer zur Atmosphäre gerichteten Durchgangsöffnung 13 versehen, durch die ein mit der Magnetspule 1 verbundener elektrischer Kontakt 23 gas- und flüssigkeitsdicht hindurchgeführt ist.For the electrical power supply of the solenoid coil 1 of the magnetic coil 1 receiving portion 5 is provided with an atmosphere-directed through hole 13 through which a connected to the magnetic coil 1 electrical contact 23 is passed gas and liquid tight.
Zwischen der Stirnfläche der Magnetspule 1 und der Stirnfläche der Ausnehmung 24 ist eine Dichtscheibe 15 eingefügt, welche vorteilhaft den aus der Magnetspule 1 hervorstehenden elektrischen Kontakt 23 flüssigkeitsdicht in Richtung der Durchgangsöffnung 13 im Ventilgehäuse 6 umschließt.Between the end face of the magnetic coil 1 and the end face of the recess 24, a sealing washer 15 is inserted, which advantageously the liquid-tight from the magnetic coil 1 protruding electrical contact 23 in the direction of the passage opening 13 in the valve housing 6 surrounds.
Die Spulenwindungen und der mit den Spulenwindungen verbundene Kontakt 23 der Magnetspule 1 sind allseitig flüssigkeitsdicht von einem Kunststoff umschlossen, der den Spulenträger bildet. Die Magnetspule 1 ist entweder in der Ausnehmung 24 des Abschnitts 5 fixiert oder über die Kunststoffum- mantelung des Kontakts 23 in der Durchgangsöffnung 13 des Ventilgehäuses 6 kraft- oder formschlüssig befestigt.The coil turns and connected to the coil turns contact 23 of the magnetic coil 1 are liquid-tight on all sides surrounded by a plastic, which forms the bobbin. The magnet coil 1 is either fixed in the recess 24 of the section 5 or fixed frictionally or positively via the plastic jacket of the contact 23 in the passage opening 13 of the valve housing 6.
Um die Magnetkraftwirkung am Magnetanker 3 möglichst effektiv zu gestalten und die Bauhöhe des Hydraulikventils möglichst gering zu halten, weist der Magnetanker 3 ein Höhen- /Breitenverhältnis auf, das vom Betrage her gleich oder kleiner Eins ist, so dass in der Praxis die Höhe des Magnetankers 3 zwangsläufig den Außendurchmesser des Magnetankers 3 nicht überschreitet.In order to make the magnetic force effect on the armature 3 as effectively as possible and to keep the overall height of the hydraulic valve as low as possible, the armature 3 has a height / width ratio, the amount equal to or forth is less than one, so that in practice the height of the magnet armature 3 does not necessarily exceed the outer diameter of the magnet armature 3.
Um für das Ventilgehäuse 6 eine möglichst kostengünstige Herstellung zu ermöglichen, ist der die Ausnehmung 24 aufweisende Abschnitt 5 als Kaltschlagteil ausgebildet, dessen Kontur sich automatengerecht durch Kaltschlagen eines den Magnetfluss leitenden Rohlings herstellen lässt, aus dem in einem einzigen Arbeitgang vorteilhaft die Außen- als auch die zur Aufnahme der Magnetspule 1 erforderliche Innenkontur geformt ist.In order to allow for the valve housing 6 as cost-effective production, the recess 24 having portion 5 is formed as a cold impact part, the contour of which can be produced automatically by cold striking a magnetic flux conducting blank from which in a single operation advantageously the outside as well which is formed for receiving the magnetic coil 1 required inner contour.
Auch der die Ventilsitzhülse 26 aufweisende weitere Abschnitt 7 des Ventilgehäuses 6 ist als Kaltschlagteil aus einem rohrförmigen Rohling hergestellt, dessen Außenkontur eine Gehäusestufe mit einer Ringnut 12 aufweist, in die zur Befestigung und Abdichtung des weiteren Abschnitts 7 im Ventilblock 11 das gegenüber dem Abschnitt 7 weichere Material des Ventilblocks 11 plastisch verdrängt ist.Also, the valve seat sleeve 26 having further portion 7 of the valve housing 6 is made as a cold-formed part of a tubular blank whose outer contour has a housing stage with an annular groove 12, in which for the attachment and sealing of the further portion 7 in the valve block 11 with respect to the section 7 softer Material of the valve block 11 is plastically displaced.
Das den Magnetfluss leitende zweiteilige Ventilgehäuse 6 besteht somit in allen Ausführungsbeispielen aus einem bevorzugt durch Kaltschlagen oder Fließpressen von Stahl hergestellten Rohling, sodass auf die an sich bisher aus dem Stand der Technik bekannten unterschiedlichen spanabhebenden und tiefziehenden Fertigungsverfahren für die Einzelteile des Ventilgehäuses 6 verzichtet wird.The magnetic flux conducting two-piece valve housing 6 thus consists in all embodiments of a preferably prepared by cold striking or extrusion of steel blank, so that is dispensed with the previously known from the prior art different machining and deep drawing manufacturing processes for the items of the valve body 6.
Ebenso lässt sich aufgrund des gewählten Aufbaus auch der Magnetanker 3 durch Fließpressen bzw. Kaltschlagen vereinfacht herstellen.Likewise, due to the chosen construction, the magnet armature 3 can also be produced in a simplified manner by extrusion or cold striking.
Die bisherig aus dem Stand der Technik bekannten Einzelkom- ponenten, wie beispielsweise der Magnetkern, die Magnetschlussscheibe und der die Magnetspule 1 umschließende Jochring lassen sich somit nunmehr erheblich einfacher durch Kaltschlagen eines Rohlings (Ventilgehäuse 6) herstellen und bilden eine überwiegend homogene Einheit bei reduzierter Teileanzahl, was besonders deutlich aus den Ausführungsbeispielen nach Figur 1 und 3 hervorgeht.The individual components known to date from the prior art Components such as the magnetic core, the magnetic closing disk and the yoke ring enclosing the magnetic coil 1 can thus be produced much more simply by cold-rolling a blank (valve housing 6) and form a predominantly homogeneous unit with a reduced number of parts, which is particularly clear from the exemplary embodiments according to FIG and 3.
Ferner weisen alle in den Figuren 1-3 abgebildeten Hydraulikventile ein am unteren, zapfenförmig abgesetzten Ende des Abschnitts 7 angeordnetes Filterelement 31 auf, das als Ringfilterelement ausgeführt ist und Schmutzeintrag in den in der Regel kalibrierten Druckmittelkanal 9 verhindert. Zur Reduzierung der Ventilbauhöhe ist der Druckmittelkanal 9 in Fig. 1, 2 unmittelbar parallel zum Druckmittelkanal 10 in einen Zwischenboden oberhalb des zapfenförmig abgestuften (weiteren) Abschnitts 7 eingelassen, der am unteren zapfen- förmigen Ende im Durchmesser soweit verkleinert ist, dass er sich mit verhältnismäßig geringer Einpresskraft am Boden der Ventilaufnahmebohrung 30 in eine Kanalbohrung (Ventilan- schluss 39 in Fig.l) oder in eine Ventilsitzplatte 43 (Siehe Fig. 2) dichtend erstreckt.Furthermore, all of the hydraulic valves depicted in FIGS. 1-3 have a filter element 31 arranged at the lower, cone-shaped stepped end of the section 7, which is designed as a ring filter element and prevents dirt from entering the generally calibrated pressure medium channel 9. To reduce the valve height of the pressure medium channel 9 is in Fig. 1, 2 immediately parallel to the pressure medium channel 10 in an intermediate bottom above the peg-shaped stepped (further) section 7 inserted, which is reduced in diameter at the lower pin-shaped end so far that he with relatively low insertion force at the bottom of the valve receiving bore 30 in a channel bore (valve port 39 in Fig.l) or in a valve seat plate 43 (see FIG. 2) sealingly extends.
Der Magnetkern ist für die in Grundstellung geschlossenen Hydraulikventile gemäß den Figuren 1 und 3 im Abschnitt 5 durch einen mittig zur Ventillängsachse ausgeformten Zylindervorsprung 25 gebildet, in den aus der Richtung des Axialspalts 2 eine Sackbohrung 16 einmündet, die eine Druckfeder 17 aufnimmt, welche zwischen der Stirnfläche des Magnetankers 3 und dem Ende der Sackbohrung 16 eingespannt ist, wodurch in der Ventilgrundstellung der Magnetanker 3 mit dem Ventilschließglied 14 am Ventilsitz 8 anliegt.The magnetic core is formed for the closed in the basic position hydraulic valves according to Figures 1 and 3 in section 5 by a centrally formed to the valve longitudinal axis cylinder projection 25 into which from the direction of the axial gap 2, a blind bore 16 opens, which receives a compression spring 17, which between the End face of the armature 3 and the end of the blind bore 16 is clamped, whereby in the basic valve position of the armature 3 rests with the valve closure member 14 on the valve seat 8.
Auf Basis der bisher beschriebenen Merkmale, die außer der Vermeidung der zum Stand der Technik bereits beschriebenen Nachteile auch zu einer wesentlichen Vereinfachung des Ventilaufbaus führen, werden nunmehr die aus den Figuren 1 bis 3 ersichtlichen weiteren vorteilhaften Einzelheiten und Unterschiede der Hydraulikventile erläutert.Based on the features described so far, except the Avoiding the disadvantages already described to the prior art also lead to a substantial simplification of the valve assembly, the further advantageous details and differences of the hydraulic valves apparent from Figures 1 to 3 will now be explained.
Das in Figur 1 in Grundstellung geschlossene Hydraulikventil weist an der von der Druckfeder 17 abgewandten Stirnseite des Magnetankers 3 ein kugelförmiges Ventilschließglied 14 auf, das unter der Wirkung der Druckfeder 17 gegen den trichterförmigen Ventilsitz 8 gepresst ist. Das Ventilschließglied 14 ist mittels einer Kondensatorschweißung mittig versenkt in einer Sackbohrung 37 des Magnetankers 3 befestigt. Zur präzisen Zentrierung des Ventilschließgliedes 14 gegenüber dem Ventilsitz 8 erstreckt sich die Ventilsitzhülse 26 mit geringem Spiel in die Sackbohrung 37, sodass der Magnetanker 3 auf der Ventilsitzhülse 26 eine Innenzentrierung aufweist. Die Mantelfläche der Sackbohrung 37 weist eine Längsnut 36 auf, sodass in der elektromagnetisch geöffneten Ventilstellung eine im Querschnitt hinreichend große, widerstandsarme Hydraulikverbindung zwischen den beiden Ventilanschlüssen 39 im Ventilblock 11 gewährleistet ist.The closed in Figure 1 in the basic position hydraulic valve has on the side remote from the compression spring 17 end face of the armature 3, a spherical valve closure member 14 which is pressed under the action of the compression spring 17 against the funnel-shaped valve seat 8. The valve closure member 14 is sunk centrally by means of a capacitor weld in a blind bore 37 of the armature 3. For precise centering of the valve closing member 14 relative to the valve seat 8, the valve seat sleeve 26 extends with a small clearance in the blind bore 37 so that the armature 3 on the valve seat sleeve 26 has an internal centering. The lateral surface of the blind bore 37 has a longitudinal groove 36, so that in the electromagnetically open valve position a cross-section sufficiently large, low-resistance hydraulic connection between the two valve ports 39 is ensured in the valve block 11.
In Figur 1 wird die gewünschte Dicht- als auch Befestigungswirkung des weiteren Abschnitts 7 in der Kanalbohrung (vertikaler Ventilanschluss 39) durch die Ausführung des zapfen- förmigen Rohrendes in Form einer Sägezahn- bzw. Tannenzapfenkontur begünstigt. Mehrere Rillen am zapfenförmigen Rohrende sind ebenso denkbar.In FIG. 1, the desired sealing and fastening action of the further section 7 in the channel bore (vertical valve connection 39) is promoted by the embodiment of the pin-shaped pipe end in the form of a sawtooth or pine cone contour. Several grooves on the pin-shaped pipe end are also conceivable.
Für das in Grundstellung geöffnete Hydraulikventil nach Fig. 2 ist abweichend von Fig. 1, 3 (wegen der Umkehrung der Bewegungsrichtung des Magnetankers 3) als Magnetkern ein mittig in den weiteren patronenförmigen Abschnitt 7 eingepress- ter Hohlkolben 20 vorgesehen, durch dessen mittige Bohrung 33 ein Stößel 34 hindurchragt, dessen dem Ventilsitz 8 zugewandtes Ende das Ventilschließglied 14 bildet, während das vom Ventilsitz 8 abgewandte Stößelende unter der Wirkung einer in der Bohrung 33 positionierten Druckfeder 17 an der dem Axialspalt 2 zugewandten Stirnfläche des Magnetankers 3 anliegt .Deviating from Fig. 1, 3 (because of the reversal of the direction of movement of the magnet armature 3) as the magnetic core, a centrally inserted into the further cartridge-shaped section 7 for the open in the basic position hydraulic valve of FIG. ter hollow piston 20 is provided through the central bore 33, a plunger 34 protrudes, the valve seat 8 facing the end valve closure member 14 forms, while facing away from the valve seat 8 plunger end under the action of a positioned in the bore 33 compression spring 17 at the axial gap 2 facing End face of the armature 3 is applied.
Um eine möglichst einfache Ausführung des Abschnitts 5 als Kaltschlagteil zu ermöglichen, weist der Abschnitt 5 an seiner oberen Stirnfläche eine an den Durchmesser des Magnetankers 3 angepasste Öffnung auf, die von einem flachen, dünnwandigen Deckel 41 verschlossen ist. Der Deckel 41 weist in der Mitte einen hülsenförmigen Vorsprung 42 auf, der sich zur Zentrierung des Magnetankers 3 im Ventilgehäuse 6 in eine Öffnung des Magnetankers 3 erstreckt. Die Kontur des Deckels 41 ist mittels Tiefziehen von Dünnblech kostengünstig hergestellt. Der Deckel 41 ist mittels einer Schweißverbindung flüssigkeitsdicht am Abschnitt 5 angebracht.In order to allow the simplest possible embodiment of the section 5 as a cold-impact part, the section 5 at its upper end face on an adapted to the diameter of the magnet armature 3 opening, which is closed by a flat, thin-walled cover 41. The cover 41 has in the middle a sleeve-shaped projection 42 which extends to center the magnet armature 3 in the valve housing 6 in an opening of the armature 3. The contour of the lid 41 is inexpensively manufactured by deep drawing of thin sheet. The lid 41 is liquid-tightly attached to the section 5 by means of a welded connection.
Durch die aus der Figur 2 ersichtlichen Konstruktion des mit dem dünnwandigen Deckel 41 verbundenen dickwandigen Abschnitts 5 ergibt sich zwecks optimierter Magnetfeldwirkung ein minimaler Radialspalt 4 bei gleichzeitig hinreichend großer Radialspaltlänge zwischen dem Magnetanker 3 und dem Abschnitt 5.By apparent from the figure 2 construction of the thin-walled lid 41 connected thick-walled section 5 is obtained for the purpose of optimized magnetic field effect a minimum radial gap 4 at the same time sufficiently large radial gap length between the armature 3 and the section fifth
Zur Verhinderung eines Kurzschlußstroms zwischen den längs und quer das blockförmige Gehäuse 11 in Richtung der Ventilaufnahmebohrung 30 durchdringende Ventilanschlüsse 39 ist in dem Ausführungsbeispiel nach Fig. 2 zwischen dem Boden der Ventilaufnahmebohrung 30 und der am zapfenförmigen Ende des topfförmigen Abschnitt 7 angeordneten Ventilsitzplatte 43 eine elastomere Ringdichtung 32 eingefügt. Zwischen der Ventilsitzplatte 43 und einem darin eingepress- ten Plattenfilter 44 befindet ein Rückschlagventil 45, das differenzdruckabhängig eine Bypassöffnung 48 in der Ventilsitzplatte 43 freigibt, sodass unabhängig von der Stellung des Ventilschließgliedes 14 eine Verbindung zwischen den Ventilanschlüssen 39 möglich ist.To prevent a short-circuit current between the longitudinally and transversely the block-shaped housing 11 in the direction of the valve receiving bore 30 penetrating valve ports 39 is in the embodiment of FIG. 2 between the bottom of the valve receiving bore 30 and arranged on the journal-shaped end of the cup-shaped portion 7 valve seat plate 43 an elastomeric ring seal 32 inserted. Between the valve seat plate 43 and a plate filter 44 pressed into it, there is a check valve 45 which releases a bypass opening 48 in the valve seat plate 43, so that a connection between the valve connections 39 is possible independently of the position of the valve closure member 14.
Die Figur 3 zeigt schließlich basierend auf dem Hydraulikventil nach Figur 1 ein als Zweistufenventil ausgeführtes, in Grundstellung geschlossenes Hydraulikventil. Es unterscheidet sich von Figur 1 dadurch, dass der Ventilsitz 8 nicht in der Ventilsitzhülse 26 des Abschnitts 7, sondern an einem hubbeweglichen Ventilkolben 28 angeordnet ist, der innerhalb eines axialbeweglichen Mitnehmers 18 angeordnet ist, der zur Magnetankerzentrierung am Umfang der Ventilsitzhülse 26 gleitbeweglich geführt ist. Um die Bauhöhe möglichst gering zu halten, erstreckt sich der als Stufenhülse ausgeführte Mitnehmer 18 und der im Mitnehmer 18 hubbeweglich angeordnete Schaft des Ventilkolbens 28 teilweise versenkt in die aus Figur 1 bereits bekannte Sackbohrung 37 des Magnetankers 3. An der Sackbohrung 37 schließt sich in Richtung des Radialspalts 2 eine Durchgangsbohrung zur Aufnahme des Ventilschließgliedes 14 an. Dem Ventilkolben 28 ist somit in Reihenschaltung das Ventilschließglied 14 vorgelagert, das abweichend zum Hydraulikventil nach Figur 1 nicht starr mit dem Magnetanker 3 verbunden ist, sondern als Stößel innerhalb der Durchgangsbohrung relativ beweglich zum Magnetanker 3 angeordnet und in einer an die Durchgangsbohrung angrenzenden Kappe 38 geführt ist, die eine Druckausgleichsbohrung 35 aufweist. Die Kappe 38 ist an der Oberseite des Magnetankers 3 befestigt, auf der sich die in der Sackbohrung 16 im Abschnitt 5 eingesetzte Druckfeder 17 abstützt. Das aus der Kappe 38 nach unten in den Magnetanker 3 hervorstehende Stößelende bildet das Ventilschließglied 14, das sich analog zur Bohrung 33 in Figur 2 auch in Figur 3 auf den Ventilsitz 8 erstreckt, der nunmehr Bestandteil des im Magnetanker 3 axialbeweglichen Ventilkolbens 28 ist.Finally, FIG. 3 shows, based on the hydraulic valve according to FIG. 1, a hydraulic valve designed as a two-stage valve and closed in its basic position. It differs from Figure 1 in that the valve seat 8 is not arranged in the valve seat sleeve 26 of the section 7, but on a liftable valve piston 28 which is disposed within an axially movable driver 18 which is slidably guided for Magnetankerzentrierung on the circumference of the valve seat sleeve 26 , In order to keep the overall height as low as possible, the carrier designed as a stepped sleeve 18 and the hub 18 of the valve piston 28 arranged in the liftably extends partially sunk in the already known from Figure 1 blind bore 37 of the armature 3. At the blind bore 37 closes in the direction of the radial gap 2 a through hole for receiving the valve closing member 14 at. The valve piston 28 is thus preceded by the valve closing member 14 in series, which is not rigidly connected to the armature 3, unlike the hydraulic valve of Figure 1, but arranged as a plunger within the through hole relatively movable to the armature 3 and guided in a cap 38 adjacent to the through hole is that has a pressure compensation bore 35. The cap 38 is fastened to the upper side of the magnet armature 3, on which the compression spring 17 inserted in the blind bore 16 in the section 5 is supported. The protruding from the cap 38 down into the armature 3 ram end forms the valve closure member 14, which is analogous 3 also extends to the bore 33 in Figure 2 on the valve seat 8, which is now part of the axially movable in the armature 3 valve piston 28.
Der in Reihe zum Ventilschließglied 14 angeordnete Ventilkolben 28 verschließt in der elektromagnetisch nicht erregten Magnetankerstellung unter der Wirkung der Druckfeder 17 einen weiteren in der Ventilsitzhülse 26 angeordneten Ventilsitz 29, der gegenüber dem Ventilsitz 8 eine erheblich größere Ventilsitzfläche aufweist.The arranged in series with the valve closing member 14 valve piston 28 closes in the electromagnetically non-energized magnet armature under the action of the compression spring 17 another disposed in the valve seat sleeve 26 valve seat 29, which has a significantly larger valve seat surface relative to the valve seat 8.
Die zwischen dem Mitnehmer 18 und dem Schaftende des Ventilkolbens 28 angeordnete Druckfeder 19 ist derart bemessen, dass bei elektromagnetischer Erregung des Magnetankers 3 der Ventilkolben 28 am Ventilschließglied 14 verharren lässt, solange der Ventilkolben 28 hydraulisch nicht druckausgeglichen ist. Das Ventilschließglied 14 wirkt als Vorsteuerstufe und gibt lediglich gegenüber dem als Hauptstufe wirksamen großen Ventilsitz 29 einen vergleichsweise kleinen Drosselquerschnitt 40 innerhalb des Ventilkolbens 28 frei, sodass der Volumendurchsatz maßgeblich von der hydraulisch initiierten Stellung des Ventilkolbens 28 bestimmt ist, wozu der Ventilkolben 28 vom Ventilsitz 29 abgehoben ist. Der Magnetanker 3 wird einerseits durch den Mitnehmer 18 an der Ventilsitzhülse 26, andererseits durch eine in den Radialspalt 4 gerichtete Ringscheibe 49 präzise im Ventilgehäuse 6 geführt. Die Ringscheibe 49 ist hierzu zwischen der Magnetspule 1 und dem Abschnitt 7 eingefügt.The arranged between the driver 18 and the shaft end of the valve piston 28 compression spring 19 is dimensioned such that when electromagnetic excitation of the armature 3 of the valve piston 28 can remain on the valve closing member 14, as long as the valve piston 28 is not hydraulically pressure balanced. The valve closing member 14 acts as a pilot stage and only relative to the effective as a main stage large valve seat 29 a relatively small throttle area 40 within the valve piston 28 free, so that the volume flow is largely determined by the hydraulically initiated position of the valve piston 28, including the valve piston 28 from the valve seat 29th is lifted off. The magnet armature 3 is guided on the one hand by the driver 18 on the valve seat sleeve 26, on the other hand by a directed into the radial gap 4 annular disc 49 precisely in the valve housing 6. The annular disc 49 is for this purpose inserted between the magnetic coil 1 and the section 7.
Mit Blick auf die baulichen Besonderheiten des Hydraulikventils nach Figur 3 folgt nunmehr hierzu eine Funktionsbeschreibung.With regard to the structural features of the hydraulic valve according to FIG. 3, this is followed by a functional description.
In der abgebildeten, elektromagnetisch nicht erregten Ven- tilstellung nehmen infolge der Schließkraft der Druckfeder 17, deren Federkraft größer dimensioniert ist als die Kraft der entgegengesetzt wirkenden Druckfeder 19, beide Ventilschließkörper (Ventilschließglied 14, 28) ihre Ventilschließstellungen ein. Das stößeiförmige Ventilschließglied 14 liegt hierzu auf Endanschlag an der Innenwand der Kappe 38 an und drückt das hülsenförmigen Ventilschließgliedes 28 auf den Ventilsitz 29. Beim bevorzugten Einsatz der abgebildeten Hydraulikventile in einer schlupfgeregelten Bremsanlage liegen in der Regel keine konstanten hydraulischen Drücke im Druckmitteleinlass (horizontaler Ventilanschluss 39) und Druckmittelauslass (vertikaler Ventilanschluss 39) vor, wobei der Druck im Druckmitteleinlass in der Regel überwiegt.In the illustrated, non-electromagnetically excited Ven- tilstellung take due to the closing force of the compression spring 17 whose spring force is larger than the force of the oppositely acting compression spring 19, both valve closing body (valve closure member 14, 28) their valve closing positions. For this purpose, the push-type valve closing member 14 bears against the end wall on the inner wall of the cap 38 and presses the sleeve-shaped valve closing member 28 onto the valve seat 29. When the illustrated hydraulic valves are preferably used in a slip-controlled brake system, there are generally no constant hydraulic pressures in the pressure medium inlet (horizontal valve connection 39 ) and Druckmittelauslass (vertical valve port 39) before, wherein the pressure in the pressure medium inlet usually predominates.
Erfolgt unter den dargelegten Gegebenheiten nunmehr eine elektromagnetisch initiierte Hubbewegung des Magnetankers 3, so legt der Magnetanker 3 unter Kompression der Druckfeder 17 zunächst bis zum Anliegen der am Ventilschließglied 14 angebrachten Stößelstufe 46 am Magnetanker 3 einen Teilhub Xl zurück. Während diesem Teilhub verharrt somit das hydraulisch nicht druckausgeglichene Ventilschließglied 14 unter der Wirkung des hydraulischen Drucks in der abgebildeten Schließstellung am Ventilkolben 28. In dem Moment, wenn infolge der Relativbewegung des Magnetankers 3 gegenüber dem Ventilschließglied 14 die Stirnfläche des Magnetankers 3 die Stößelstufe 46 berührt, ist der Abstand des Magnetankers 3 vom Zylindervorsprung 25 bereits um den Teilhub Xl auf ein Minimum des Axialspalts 2 reduziert, sodass vorteilhaft nur eine geringe elektromagnetische Erregung erforderlich ist, um zum Abheben des Ventilschließgliedes 14 vom Ventilsitz 8 den verbliebenen minimalen Axialspalt 2 zwischen Magnetkern und Magnetanker 3 zu überbrücken.If, under the circumstances outlined, an electromagnetically initiated lifting movement of the magnet armature 3 occurs, the magnet armature 3 initially compresses the compression spring 17 until the abutment of the tappet stage 46 mounted on the valve arm 4 on the armature 3 returns a partial lift X1. During this partial stroke thus the hydraulically not pressure-balanced valve closing member 14 remains under the action of the hydraulic pressure in the illustrated closed position on the valve piston 28. At the moment when due to the relative movement of the armature 3 against the valve closing member 14, the end face of the armature 3 touches the plunger stage 46, is the distance of the armature 3 from the cylinder projection 25 already reduced by the partial stroke Xl to a minimum of the axial gap 2, so that advantageously only a small electromagnetic excitation is required to lift the valve closing member 14 from the valve seat 8 the remaining minimum axial gap 2 between the magnetic core and armature 3 to bridge.
Somit wird erst kurz bevor der Magnetanker 3 den Magnetkern (Zylindervorsprung 25) erreicht das Ventilschließglied 14 angehoben, weil sodann der Magnetanker 3 an der Stößelstufe 46 anliegt und vom Magnetanker 3 mitgenommen wird, Das Ventilschließglied 14 entfernt sich damit vom Ventilkolben 28 und gibt den Drosselquerschnitt 40 frei.Thus, only shortly before the armature 3, the magnetic core (Cylinder projection 25) reaches the valve closing member 14 is raised, because then the armature 3 rests against the plunger stage 46 and is carried along by the armature 3. The valve closure member 14 thus moves away from the valve piston 28 and releases the throttle cross section 40.
Damit ist auf verhältnismäßig einfache Weise infolge der Re- lativverschiebbarkeit des Ventilschließgliedes 14 zwischen der Kappe 38 und dem Magnetanker 3 die Voraussetzung geschaffen, dass auch der Ventilkolben 28 durch die Druckfeder 19 und den hülsenförmigen Mitnehmer 18 unterstützt den drosselfreien großen Querschnitt am Ventilsitz 29 zu öffnen vermag. Infolge des geöffneten Drosselquerschnitts 40 stellt sich innerhalb des Ventilgehäuses 6 ein hydraulischer Druckausgleich ein, der das Abheben des Ventilschließgliedes 28 vom Ventilsitz 29 erleichtert. Das Abheben des Ventilschließgliedes 28 vom Ventilsitz 29 erfolgt, sobald die Stirnfläche des mit dem Magnetanker 3 starr verbundenen Mitnehmers 18 den Kragen 50 des hohlkolbenförmigen Ventilschließgliedes 38 berührt, wobei die Druckfeder 19 das Ventilschließglied 28 über den vom Mitnehmer 18 erzwungenen Hub vom Ventilsitz 29 zusätzlich und damit vollständig anzuheben vermag, sobald über den Drosselquerschnitt 40 der hydraulische Druckausgleich erfolgt ist.Thus, in a relatively simple manner as a result of the relative displacement of the valve closing member 14 between the cap 38 and the magnet armature 3, the condition is created that the valve piston 28 is also supported by the compression spring 19 and the sleeve-shaped driver 18 to open the throttle-free large cross section on the valve seat 29 can. As a result of the open throttle cross-section 40, a hydraulic pressure equalization is established within the valve housing 6, which facilitates the lifting of the valve closure member 28 from the valve seat 29. The lifting of the valve closing member 28 from the valve seat 29 takes place as soon as the end face of the armature 3 rigidly connected driver 18 contacts the collar 50 of the hollow piston-shaped valve closure member 38, wherein the compression spring 19, the valve closing member 28 on the forced by the driver 18 stroke of the valve seat 29 in addition so that it is able to lift completely as soon as the hydraulic pressure equalization has taken place via the throttle cross-section 40.
Der Vorteil der teleskopischen Anordnung der beiden Ventilschließglieder 14, 28 im Magnetanker 3 besteht somit darin, dass bei einer elektromagnetisch initiierte Hubbewegung des Magnetankers 3 zunächst bis zum Anliegen des Magnetankers 3 an der Stößelstufe des Ventilschließgliedes 14 bereits ein Teilhub Xl vom Magnetanker 3 zurückgelegt ist, der den zum Öffnen des Ventilschließgliedes 28 erforderlichen Hub und damit auch den vom Magnetfeld zu überbrückende Axialspalt 2 erheblich reduziert, sodass nach dem Druckausgleich über die Drosselbohrung 40 mit einer verhältnismäßig geringen Magnetkraft das für einen großen Volumendurchsatz konzipierte Ventilschließglied 28 über den Mitnehmer 18 vom Ventilsitz 29 entsprechend leicht abgehoben werden kann.The advantage of the telescopic arrangement of the two valve closing members 14, 28 in the armature 3 is thus that in a electromagnetically initiated lifting movement of the armature 3 is initially covered until the armature 3 at the plunger stage of the valve closing member 14 is already a partial stroke of the armature 3, the required for opening the valve closing member 28 stroke and thus also significantly reduced by the magnetic field to be bridged axial gap 2, so that after the pressure equalization over the Throttle bore 40 with a relatively low magnetic force designed for a large volume flow rate valve closure member 28 via the driver 18 from the valve seat 29 can be lifted accordingly.
Die vorgestellten Hydraulikventile kommen bevorzugt in einem schlupfgeregelten Kfz-Bremssystem zur Anwendung, wozu der nur abschnittsweise abgebildete Ventilblock 11 eine Vielzahl von Ventilaufnahmebohrungen 30 aufweist, die in mehreren Reihen zur Aufnahme des abgebildeten Zweistufenventils und der abgebildeten stromlos geschlossenen sowie stromlos geöffneten Hydraulikventile in den Ventilblock 11 eingelassen sind. Hierdurch ergibt sich ein besonders kompaktes Bremsgerät, dessen Ventilblock 11 aufgrund der geringen Bauhöhe der abgebildeten Hydraulikventile besonders flach baut. Die abgebildeten Hydraulikventile erfüllen hierbei die Funktion den Bremsdruckauf- und den Bremsdruckabbau in den Radbremsen im Schlupfregelfall mittels einer geeigneten Steuerelektronik gezielt zu beeinflussen, die bevorzugt unmittelbar flach und damit äußerst kompakt auf der Oberseite der Hydraulikventile anliegt.The presented hydraulic valves are preferably used in a slip-controlled motor vehicle brake system, for which the valve block 11 shown only in sections has a plurality of valve receiving bores 30, which are shown in several rows for receiving the illustrated two-stage valve and the illustrated normally closed and normally open hydraulic valves in the valve block 11 are admitted. This results in a particularly compact braking device, the valve block 11 is particularly flat due to the low height of the illustrated hydraulic valves. The illustrated hydraulic valves in this case fulfill the function of selectively influencing the Bremsdruckauf- and the brake pressure reduction in the wheel brakes in the slip rule by means of a suitable control electronics, which preferably rests directly flat and thus extremely compact on the top of the hydraulic valves.
Zusammenfassend ergibt sich durch die vorgeschlagenen erfindungsgemäßen Merkmale ein besonders kurz bauendes Hydraulikventil in verschiedenen Ausführungsvarianten mit einer gegenüber den bisher bekannten Ventilen erhöhten Magnetkraft, da der Radialspalt 4 aufgrund der beschriebenen Ventilbauweise besonders klein ist. Die erfindungsgemäß vorgeschlagenen Hydraulikventile lassen sich bei Bedarf vollständig im Ventilblock 11 versenken, wobei durch die vollständige Integration der Magnetspule 1 im Ventilgehäuse 6 und infolge der weitgehenden Integrationsfähigkeit des Ventilgehäuses 6 im kanalführenden Ventilblock 11 eine hervorragende Wärmeableitung für den Magnetantrieb gewährleistet ist. Die vollständige Integration der Hydraulikventile im block- förmigen Gehäuse 11 erleichtert nicht nur die Anordnung einer für die Aktivierung der Hydraulikventile erforderlichen Steuerelektronik, die bevorzugt unmittelbar auf der Oberfläche des Abschnitts 5 angeordnet ist, aus der die Kontakte 23 der Magnetspule 1 hervorstehen, sondern gewährleistet eine gute Wärmeableitung für die Steuerelektronik, da der Abschnitt 5 als auch der bevorzugt aus einer Leichtmetalllegierung gefertigt Ventilblock 11 als Wärmesenke bzw. groß dimensionierten Kühlfläche wirken.In summary, the result of the proposed features according to the invention is a particularly short hydraulic valve in various embodiments with a comparison with the previously known valves increased magnetic force, since the radial gap 4 is particularly small due to the valve design described. The inventively proposed hydraulic valves can be completely submerged as needed in the valve block 11, which is ensured by the complete integration of the solenoid coil 1 in the valve housing 6 and due to the extensive integration capacity of the valve housing 6 in the channel-guiding valve block 11 excellent heat dissipation for the magnetic drive. The complete integration of the hydraulic valves in the block-shaped housing 11 not only facilitates the arrangement of a control electronics required for the activation of the hydraulic valves, which is preferably arranged directly on the surface of the section 5, from which the contacts 23 of the magnetic coil 1 protrude, but ensures a Good heat dissipation for the control electronics, as the section 5 and the valve block preferably made of a light metal alloy 11 act as a heat sink or large-sized cooling surface.
Wie aus allen Abbildungen ersichtlich ist, sind alle zitierten Bauteile rotationssymmetrisch zur Ventillängsachse ausgerichtet, wodurch eine automatengerechte Herstellung und Montage der Bauteile begünstigt wird. As can be seen from all the figures, all cited components are rotationally symmetrical aligned with the valve longitudinal axis, whereby a vending machine-compatible production and assembly of the components is favored.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Magnetspule1 solenoid
2 Axialspalt2 axial gap
3 Magnetanker3 magnetic armature
4 Radialspalt4 radial gap
5 Abschnitt5 section
6 Ventilgehäuse6 valve housing
7 Abschnitt7 section
8 Ventilsitz8 valve seat
9 Druckmittelkanal9 pressure medium channel
10 Druckmittelkanal10 pressure medium channel
11 Ventilblock11 valve block
12 Ringnut12 ring groove
13 Durchgangsöffnung13 passage opening
14 Ventilschließglied14 valve closure member
15 Dichtscheibe15 sealing washer
16 Sackbohrung16 blind hole
17 Druckfeder17 compression spring
18 Mitnehmer18 drivers
19 Druckfeder19 compression spring
20 Hohlkolben20 hollow piston
21 Schweißnaht21 weld
22 Kugelhalter22 ball holders
23 Kontakt23 contact
24 Ausnehmung24 recess
25 Zylindervorsprung25 cylinder projection
26 Ventilsitzhülse26 valve seat sleeve
27 Rückschlagventil27 check valve
28 Ventilkolben28 valve piston
29 Ventilsitz29 valve seat
30 Ventilaufnahmebohrung30 valve receiving bore
31 Filterelement31 filter element
32 Ringdichtung Bohrung32 ring seal drilling
Stößeltappet
DruckausgleichbohrungPressure compensating bore
Längsnutlongitudinal groove
Sackbohrungblind hole
Kappecap
Ventilanschlussvalve connection
DrosselquerschnittThrottle cross section
Deckelcover
Vorsprunghead Start
VentilsitzplatteValve seat plate
Plattenfilterplate filters
Rückschlagventilcheck valve
Stößelstuferam stage
Blendenöffnungaperture
Bypassöffnungbypass opening
Ringscheibewasher
Kragen collar

Claims

Patentansprüche claims
1. Hydraulikventil, insbesondere für schlupfgeregelte Bremsanlagen, mit einem in Patronenbauweise ausgeführten Ventilgehäuse, welches zum Verbinden oder Trennen von Druckmittelkanälen im Ventilgehäuse ein mit einem Magnetanker zusammenwirkendes Ventilschließglied aufnimmt, das auf einen Ventilsitz im Ventilgehäuse gerichtet ist, mit einer Magnetspule zur Betätigung des Magnetankers, die mit einem den Magnetfluss leitenden Abschnitt des Ventilgehäuses fest verbunden ist, mit einem von Magnetfeldlinien überbrückbaren, zwischen dem Ventilgehäuse und einer Stirnfläche des Magnetankers vorgesehenen Axialspalt und mit einem von Magnetfeldlinien überbrückbaren, zwischen einer Mantelfläche des Magnetankers und dem Ventilgehäuse vorgesehenen Radialspalt, sowie mit einem weiteren den Magnetfluss leitenden Abschnitt des Ventilgehäuses, der den Ventilsitz aufnimmt, dadurch gekennzeichnet, dass die Magnetspule (1) einer über die Druckmittelkanäle (9, 10) in dasA hydraulic valve, in particular for slip-controlled brake systems, with a valve housing designed in a cartridge housing for connecting or disconnecting pressure fluid channels in the valve housing a cooperating with a magnet armature valve closure member which is directed to a valve seat in the valve housing, with a magnetic coil for actuating the armature, which is fixedly connected to a portion of the valve housing which conducts the magnetic flux, with an axial gap provided between the valve housing and an end face of the magnet armature and with a radial gap which can be bridged by magnetic field lines, provided between a lateral surface of the magnet armature and the valve housing, and with a magnetic gap Further, the magnetic flux conducting portion of the valve housing, which receives the valve seat, characterized in that the magnetic coil (1) via the pressure medium channels (9, 10) in the
Ventilgehäuse (6) ein- als auch ableitbaren Flüssigkeit ausgesetzt ist.Valve housing (6) is exposed to one as well as dissipative liquid.
2. Hydraulikventil nach Anspruch 1, dadurch gekennzeichnet, dass zumindest einer der beiden patronenförmigen Abschnitte (5, 7) des Ventilgehäuses (6) eine Ausnehmung (24) zur Aufnahme der Magnetspule (1) aufweist, in der die Magnetspule (1) fixiert und in der Offenstellung des Ventilschließgliedes (14) im Bereich ihres In- nenumfangs von der Flüssigkeit beaufschlagt ist.2. Hydraulic valve according to claim 1, characterized in that at least one of the two cartridge-shaped sections (5, 7) of the valve housing (6) has a recess (24) for receiving the magnetic coil (1), in which the magnetic coil (1) fixed and is acted upon in the open position of the valve closing member (14) in the region of its inner circumference of the liquid.
3. Hydraulikventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die beiden Abschnitte (5, 7) als Patronenhälften ausgeführt sind, die mit ihren ringscheiben- förmigen Stirnflächen aufeinander liegen und vorzugsweise mittels einer Schweißnaht (21) flüssigkeitsdicht miteinander verbunden sind.3. Hydraulic valve according to claim 1 or 2, characterized in that the two sections (5, 7) are designed as cartridge halves, with their ringscheiben- shaped end faces lie on each other and preferably by means of a weld (21) are liquid-tightly interconnected.
4. Hydraulikventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der die Magnetspule (1) aufnehmende Abschnitt (5) mit einer zur Atmosphäre gerichteten Durchgangsöffnung (13) versehen ist, durch die ein für die Magnetspule (1) vorgesehener elektrischer Kontakt (23) gas- und flüssigkeitsdicht hindurchgeführt ist.4. Hydraulic valve according to one of the preceding claims, characterized in that the said magnetic coil (1) receiving portion (5) is provided with a passage opening directed to the atmosphere (13) through which a for the magnetic coil (1) provided for electrical contact (23 ) Gas and liquid-tight is passed.
5. Hydraulikventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Spulenwindungen der Magnetspule (1) allseitig flüssigkeitsdicht von einem Kunststoff umschlossen sind, und dass die Magnetspule (1) vorzugsweise mittels einer Presspassung in der Ausnehmung (24) des Abschnitts (5) fixiert ist, die an die Außenkontur der Magnetspule (1) kappenförmig an- gepasst ist.5. Hydraulic valve according to one of the preceding claims, characterized in that the coil turns of the magnetic coil (1) are on all sides liquid-tight surrounded by a plastic, and that the magnetic coil (1) preferably by means of a press fit in the recess (24) of the portion (5). is fixed, which is fitted to the outer contour of the magnetic coil (1) cap-shaped.
6. Hydraulikventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass zwischen der Stirnfläche der Magnetspule (1) und der Stirnfläche der Ausnehmung (24) eine Dichtscheibe (15) eingefügt ist, welche den aus der Magnetspule (1) hervorstehenden elektrischen Kontakt (23) flüssigkeitsdicht in Richtung der Durchgangsöffnung (13) im Ventilgehäuse (6) umschließt.6. Hydraulic valve according to one of the preceding claims, characterized in that between the end face of the magnetic coil (1) and the end face of the recess (24), a sealing washer (15) is inserted, which from the magnetic coil (1) projecting electrical contact (23 ) liquid-tight in the direction of the passage opening (13) in the valve housing (6) encloses.
7. Hydraulikventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der Außendurchmesser des Magnetankers (3) wenigstens so groß gewählt ist wie die Höhe des Magnetankers (3) . 7. Hydraulic valve according to one of the preceding claims, characterized in that the outer diameter of the magnet armature (3) is at least as large as the height of the armature (3).
8. Hydraulikventil nach Anspruch 1, dadurch gekennzeichnet, dass zur Ein- und Ausleitung der Flüssigkeit in bzw. aus das Ventilgehäuse (6) ein erster sowie ein zweiter Druckmittelkanal (9, 10) parallel zueinander in den Boden des weiteren Abschnitts (7) einmünden, wobei einer der beiden Druckmittelkanäle (9, 10) eine im Boden des weiteren Abschnitts (7) angeordnete, den Ventilsitz (8) aufweisende Ventilsitzhülse (26) durchdringt .8. Hydraulic valve according to claim 1, characterized in that for the inlet and outlet of the liquid in or out of the valve housing (6) a first and a second pressure medium channel (9, 10) open parallel to each other in the bottom of the further section (7) wherein one of the two pressure medium channels (9, 10) penetrates a valve seat sleeve (26) which has the valve seat (8) and is arranged in the bottom of the further section (7).
9. Hydraulikventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der die Ausnehmung (24) aufweisende Abschnitt (5) als Kaltschlagteil ausgebildet ist, dessen Kontur zur Aufnahme der Magnetspule (1) in einem einzigen Arbeitgang durch Kaltschlagen eines den Magnetfluss leitenden Rohlings hergestellt ist .9. Hydraulic valve according to one of the preceding claims, characterized in that the recess (24) having portion (5) is designed as a cold impact part whose contour for receiving the magnetic coil (1) produced in a single operation by cold striking a magnetic flux conducting blank is.
10. Hydraulikventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der die Ventilsitzhülse (26) aufweisende weitere Abschnitt (7) als Kaltschlagteil ausgeführt ist, dessen Außenkontur vorzugsweise eine Gehäusestufe mit einer Ringnut (12) aufweist, in die zur Befestigung des weiteren Abschnitts (7) in einem Ventilblock (11) das gegenüber dem Abschnitt (7) weichere Material des Ventilblocks (11) plastisch verdrängbar ist. 10. Hydraulic valve according to one of the preceding claims, characterized in that the valve seat sleeve (26) having further portion (7) is designed as a cold-impact part whose outer contour preferably has a housing stage with an annular groove (12), in which for attachment of the further section (7) in a valve block (11) with respect to the portion (7) softer material of the valve block (11) is plastically displaceable.
PCT/EP2006/068593 2005-11-19 2006-11-17 Hydraulic valve WO2007057438A1 (en)

Applications Claiming Priority (4)

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DE102005055228.5 2005-11-19
DE102005055228 2005-11-19
DE102006004101.1 2006-01-28
DE102006004101A DE102006004101A1 (en) 2005-11-19 2006-01-28 hydraulic valve

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Publication number Priority date Publication date Assignee Title
DE102009041446A1 (en) * 2009-09-16 2011-03-24 Svm Schultz Verwaltungs-Gmbh & Co. Kg electromagnet
DE102010002284A1 (en) * 2010-02-24 2011-08-25 Continental Teves AG & Co. OHG, 60488 Valve arrangement, particularly for slip-controlled motor vehicle braking system, has hydraulically controlled non-return valve in non-return valve housing, where valve closure unit is arranged in tubular housing body

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DE1650574A1 (en) * 1967-11-15 1970-09-10 Teldix Gmbh Electromagnetically operated miniature valve with plunger magnet system
DE8914152U1 (en) * 1989-12-01 1990-02-08 Pierburg GmbH, 4040 Neuss Electromagnetic multi-way valve
DE10254342A1 (en) * 2002-05-02 2003-11-13 Continental Teves Ag & Co Ohg Solenoid valve
EP1124714B1 (en) * 1998-10-28 2004-01-21 Robert Bosch Gmbh Electromagnetic device, especially for an anti-slip, hydraulic vehicle brake system

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Publication number Priority date Publication date Assignee Title
DE4001938C3 (en) * 1990-01-24 2001-07-19 Mannesmann Ag Linear unit
DE19537659A1 (en) * 1995-10-10 1997-04-17 Teves Gmbh Alfred Valve arrangement esp. electromagnetic non-skid brake valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1650574A1 (en) * 1967-11-15 1970-09-10 Teldix Gmbh Electromagnetically operated miniature valve with plunger magnet system
DE8914152U1 (en) * 1989-12-01 1990-02-08 Pierburg GmbH, 4040 Neuss Electromagnetic multi-way valve
EP1124714B1 (en) * 1998-10-28 2004-01-21 Robert Bosch Gmbh Electromagnetic device, especially for an anti-slip, hydraulic vehicle brake system
DE10254342A1 (en) * 2002-05-02 2003-11-13 Continental Teves Ag & Co Ohg Solenoid valve

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