EP1690149A1 - Pressure control valve - Google Patents

Pressure control valve

Info

Publication number
EP1690149A1
EP1690149A1 EP04804515A EP04804515A EP1690149A1 EP 1690149 A1 EP1690149 A1 EP 1690149A1 EP 04804515 A EP04804515 A EP 04804515A EP 04804515 A EP04804515 A EP 04804515A EP 1690149 A1 EP1690149 A1 EP 1690149A1
Authority
EP
European Patent Office
Prior art keywords
valve
tappet
housing
magnet armature
pressure medium
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Withdrawn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
EP04804515A
Other languages
German (de)
French (fr)
Inventor
Christoph Voss
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.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and 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
Priority claimed from DE102004024301A external-priority patent/DE102004024301A1/en
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1690149A1 publication Critical patent/EP1690149A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2024—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means the throttling means being a multiple-way valve

Definitions

  • the invention relates to a pressure regulating valve, in particular for regulating the hydraulic pressure in a motor vehicle transmission, according to the preamble of patent claim 1.
  • FIG. 1 shows a first expedient embodiment of the invention on a pressure control valve, the inlet channel of which is separated from the outlet and leakage channel in the basic position of the spherical valve closing member,
  • FIG. 2 shows a second expedient embodiment of the invention shown on a pressure control valve, the inlet channel of which in the basic position of the spherical valve closing element is connected on the one hand to the outlet channel and on the other hand is separated from the leakage channel,
  • FIG. 3 shows a modification of individual features of the pressure control valve according to FIG. 1,
  • FIG. 4 shows a modification * of individual features of the pressure control valve according to FIG. 2.
  • Each of the two pressure regulating valves has a valve housing 8, 9 manufactured in a cartridge design, in which a valve tappet 6 is guided, which cooperates with a first spherical valve closing member 13, around the flow path between a first pressure medium connection 1 (inlet channel, which opens radially into the valve housing 8, 9) ) and a second pressure medium connection 2 (drainage channel) which opens axially from below into the valve housing, either to interrupt or to connect.
  • the valve housing 8, 9 accommodates a valve seat 4 facing the first valve closing member 13 and a magnet armature 14 which actuates the valve tappet 6 and which is movably arranged within a valve coil 20 arranged on the valve housing 8, 9.
  • each of the two pressure control valves is constructed in such a way that the valve seat body 5 by means of a centering body 7 guiding the valve tappet 6 in the valve housing 8 , 9 is fixed.
  • the centering body 7 is preferably held in the valve housing 8, 9 by means of a press connection that is particularly simple to implement.
  • a passage 12 is arranged in the center of the centering body 7, through which the valve tappet 6 extends, for which purpose the pocket-shaped recess of the centering body 7 has two punched holes which can be closed by a further valve closing member 27 fastened to the valve tappet 6.
  • the surface of the cap-shaped centering body 7 facing the further valve closing member 27 therefore has a valve seat surface 10 adapted to the contour of the further valve closing member 27 to accommodate the further valve closing member 27 in order to make the pressure medium connection between the two pressure medium channels 1, 2 and the third pressure medium connection 3 dependent on that To be able to separate the position of the valve lifter 6 at any time.
  • the second Ventilschüeßgüed 13 is designed as a plate-shaped seat valve, which is preferably produced by stamping, embossing or deep-drawing thin sheet metal to form an annular disk which is attached to the valve tappet 6 by means of a press fit.
  • the valve housing In order to be able to manufacture the valve housing as small as possible and inexpensively, it consists of a first and a second housing part 8, 9, the first housing part 8 being designed as a deep-drawn housing pot into which the valve seat body 5 and the centering body 7 are pressed.
  • the first housing part 8 is fastened to the collar 15 of the second housing part 9 in a particularly simple manner in a pressure-tight manner by means of a press connection, the second housing part 9 being designed as a tubular cold extrusion or turned part for receiving the parts relevant for the magnetic circuit (magnet armature 14, valve coil 20).
  • the magnet armature 14 is designed as a hollow igniter, into which a magnet armature sleeve 16, which is produced in the deep-drawing process, is pressed and which projects with its sleeve ends on both sides of the end faces of the magnet armature 14.
  • the lower sleeve end has a stop 17 for the valve tappet 6, while on the side of the stop 17 facing away from the valve tappet 6, a compression spring 18 arranged inside the magnet armature sleeve 16 is accommodated in a space-saving manner and is acted upon by an adjusting sleeve 21 adjusted in the yoke ring 19.
  • the yoke ring 19 consists of a sheet metal part produced in the deep-drawing process, which is placed over the outer circumference of the valve coil 20.
  • the yoke ring 19 is bent with its end facing away from the valve housing 9 inwards around the upper edge of the valve coil 20 and is connected by means of a press connection to a tube 22 which, with its end remote from the offset region, extends between the valve coil 20 and the magnet armature 14 in the direction of the End face of the second housing part 9 extends.
  • the tube 22, following its press-fit area in the yoke ring 19 has a step section (23) with an enlarged diameter, on which the magnet armature sleeve (16) is supported.
  • a filter bowl 24 provided with a ring filter fabric is pressed onto the first housing part 8, a pin 25 being arranged at the bottom of the filter bowl 24, which pin closes a stepped bore 26 arranged in the center of the valve seat body 5, in which the first valve plug 13 is inserted.
  • a transverse channel 28 opens into the stepped bore 26 and is permanently connected to the first pressure medium connection 1 opening radially into the wall of the first housing part 8.
  • the second pressure medium connection 2 extends as a longitudinal channel eccentrically through the bottom of the filter bowl 24 and through the bottom of the valve seat body 5 into the cavity of the first housing part 8, in which the centering body 7 is located and from there (depending on the position of the two Ventilschüeßgüeder 13, 27) with the first and / or connected to the third pressure medium connection 1, 3.
  • the filter bowl 24 is made of a plastic, which has circumferential grooves at both ends, into which sealing rings 30 are inserted, which lie sealingly along the bore wall of a valve carrier 31 receiving the pressure regulating valve.
  • the cup-shaped housing part 8 On the upper edge of the valve carrier 31, the cup-shaped housing part 8 is supported with its radially outwardly bent edge, on which a projection of the second housing part 9 holds the pressure control valve in the valve carrier 31 under the action of an axial assembly force.
  • the spherical first valve closing element 13 is in the electromagnetically non-energized basic position of the armature 14 in its closed position on the valve seat 4, since a return spring 29 is arranged between the cup-shaped stop 17 and the second housing part 9, the force of which is greater is the counteracting force of the compression spring 18.
  • the further plate-shaped valve closing member 27 is lifted off the valve seat surface 10, so that the second pressure medium connection 2 is connected exclusively to the third pressure medium connection 3 through the longitudinal channel of the valve seat body 5.
  • the tube 22 in the valve construction according to FIG. 2 additionally takes on the function of the magnetic core, as a result of which an incredibly simple structure of the magnetic core is realized.
  • the pressure regulating valve according to FIG. 3 differs from the pressure regulating valve according to FIG. 1 by a yoke ring 19 which is pulled down particularly deep in the interior of the valve coil 20 in the direction of the valve housing 9 and in which the magnet armature 14 is guided.
  • the tube 22 with a constant diameter can be designed particularly easily as a cold-drawn or deep-drawn part.
  • the pressure regulating valve according to FIG. 3 differs from the pressure regulating valve according to FIG. 1 by the one-piece design of the magnet armature sleeve 16 with the stop.
  • the further illustrated features of the pressure control valve according to FIG. 3 can be found in the description part of FIG. 1.
  • the pressure regulating valve according to FIG. 4 differs from the pressure regulating valve according to FIG. 2 by a yoke ring 19 which is drawn lower in the inner region of the valve coil 20 in the direction of the valve housing 9 and in which the magnet armature 14 is guided in the upper end region.
  • the tube 22 with a constant diameter can be designed particularly easily as a cold-drawn or deep-drawn part.
  • the further illustrated features of the pressure control valve according to FIG. 4 can be found in the description part of FIG. 2.
  • valve seat 1 pressure medium connection 2 pressure medium connection 3 pressure medium connection 4 valve seat 5 valve seat body 6 valve tappet 7 centering body 8 valve housing 9 valve housing 10 valve seat surface 11 centering opening 12 passage 13 valve closing member 14 magnet armature 15 collar 16 magnet armature sleeve 17 stop 18 compression spring 19 yoke ring 20 valve coil 21 adjusting sleeve 22 tube 23 step section 24 filter bowl 25 pin 26 stepped bore 27 valve closing member 28 cross channel 29 return spring 30 sealing ring 31 valve carrier

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention relates to a pressure control valve whose valve seat member (5) is fastened inside the valve housing (8) by means of a centering element (7) guiding the valve tappet (6).

Description

DruckregelventilPressure control valve
Die Erfindung betrifft ein Druckregelventil, insbesondere zur Regelung des Hydraulikdrucks in einem Kraftfahrzeugetriebe, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a pressure regulating valve, in particular for regulating the hydraulic pressure in a motor vehicle transmission, according to the preamble of patent claim 1.
Aus der DE 197 44 696 AI ist bereits ein derartiges Druckregelventil zur Regelung des Hydraulikdrucks in einem Kraftfahrzeuggetriebe bekannt, dessen Ventilstößel entfernt vom Ventilschließglied abschnittsweise im Ventilgehäuse geführt ist. Das Druckregelventil ist als 3/2-Wegeventil ausgeführt, so dass außer dem im Strömungsweg zwischen dem Zulauf- und Ablaufkanal angeordneten Ventilschließglied über ein als Drosselstufe am Ventilstößel wirksames weiteres Ventilschließglied ein weiterer regelbarer Strömungsweg zu einem Leckagekanal besteht, der von der Drosselstufe verschlossen wird, sobald das kugelförmige Ventilschließglied durch den Ventilstößel vom Ventilsitz abgehoben ist.From DE 197 44 696 AI such a pressure control valve for regulating the hydraulic pressure in a motor vehicle transmission is already known, the valve tappet of which is guided in sections away from the valve closing member in the valve housing. The pressure control valve is designed as a 3/2-way valve, so that in addition to the valve closing element arranged in the flow path between the inlet and outlet channels, there is a further controllable flow path to a leakage channel via a further valve closing element acting as a throttle stage on the valve tappet, which is closed by the throttle stage. as soon as the spherical valve closing member is lifted from the valve seat by the valve tappet.
Es ist die Aufgabe der Erfindung, ein Druckregelventil der angegebenen Art dahingehend zu verändern, dass bei gleichzeitiger Funktionsverbesserung mit möglichst einfachen baulichen Mitteln eine maßgebliche Reduzierung des Herstellaufwandes erreicht wird.It is the object of the invention to change a pressure regulating valve of the type specified in such a way that, while at the same time improving the function, constructional means are reduced significantly, with the simplest possible constructional means.
Erfindungsgemäß wird die gestellte Aufgabe für ein Druckregelventil der eingangs genannten Art durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Durch die in den Unteransprüchen aufgezeigten Maßnahmen sind zweckmäßige Ausbildungen der Erfindung angegeben, die im Zusammenhang mit den weiteren Merkmalen und Vorteilen der Erfindung nachfolgend anhand mehrerer Zeichnungen gemäß den Figuren 1 und 2 näher dargestellt und erläutert werden.According to the invention, the object is achieved for a pressure control valve of the type mentioned by the characterizing features of claim 1. The measures set out in the subclaims provide expedient embodiments of the invention which, in connection with the further features and advantages of the invention, are illustrated and explained in more detail below with reference to several drawings in accordance with FIGS. 1 and 2.
Es zeigen:Show it:
Figur 1 eine erste zweckmäßige Ausgestaltung der Erfindung dargestellt an einem Druckregelventil, dessen Zulaufkanal in der Grundstellung des kugelförmigen Ventilschließgliedes vom Ablauf- und Leckagekanal getrennt ist,1 shows a first expedient embodiment of the invention on a pressure control valve, the inlet channel of which is separated from the outlet and leakage channel in the basic position of the spherical valve closing member,
Fig. 2 eine zweite zweckmäßige Ausgestaltung der Erfindung dargestellt an einem Druckregelventil, dessen Zulaufkanal in der Grundstellung des kugelförmigen Ventilschließgüedes einerseits mit dem Ablaufkanal verbunden, andererseits vom Leckagekanal getrennt ist,2 shows a second expedient embodiment of the invention shown on a pressure control valve, the inlet channel of which in the basic position of the spherical valve closing element is connected on the one hand to the outlet channel and on the other hand is separated from the leakage channel,
Fig. 3 eine Abwandlung einzelner Merkmale des Druckregelventils nach Figur 1,3 shows a modification of individual features of the pressure control valve according to FIG. 1,
Fig. 4 eine Abwandlung* einzelner Merkmale des Druckregelventils nach Figur 2.4 shows a modification * of individual features of the pressure control valve according to FIG. 2.
In der nachfolgenden Beschreibung werden zunächst die gemeinsamen Merkmale herausgestellt, die für beide in den Figuren 1 und 2 abgebildeten Druckregelventile verwendet werden .In the following description, the common features that are used for both pressure control valves shown in FIGS. 1 and 2 are first highlighted.
Die Druckregelventile nach Fig. 1, 2 sind jeweils im Längsschnitt gezeigt und eignen sich aufgrund ihrer Ausführung als 3/2- egesitzventile als Vorsteuerventile zur Regelung des Hydraulikdrucks in einem Automatikgetriebe eines Kraftfahrzeugs . Jedes der beiden Druckregelventile verfügt über ein in Patronenbauweise gefertigtes Ventilgehäuse 8, 9, in dem ein Ventilstößel 6 geführt ist, der mit einem ersten kugelförmigen Ventilschließglied 13 zusammenwirkt, um den Strömungspfad zwischen einem radial in das Ventilgehäuse 8, 9 einmündenden ersten Druckmittelanschluss 1 (Zulaufkanal) und einem von unten in das Ventilgehäuse axial einmündenden zweiten Druckmittelanschluss 2 (Ablau kanal) entweder zu unterbrechen oder zu verbinden. Ferner nimmt das Ventilgehäuse 8, 9 einen dem ersten Ventilschließglied 13 zugewandter Ventilsitz 4 sowie einen den Ventilstößel 6 betätigenden Magnetanker 14 auf, der innerhalb einer am Ventilgehäuse 8, 9 angeordneten Ventilspule 20 beweglich angeordnet ist.1, 2 are each shown in longitudinal section and are suitable due to their Design as 3/2-seat valves as pilot valves for regulating the hydraulic pressure in an automatic transmission of a motor vehicle. Each of the two pressure regulating valves has a valve housing 8, 9 manufactured in a cartridge design, in which a valve tappet 6 is guided, which cooperates with a first spherical valve closing member 13, around the flow path between a first pressure medium connection 1 (inlet channel, which opens radially into the valve housing 8, 9) ) and a second pressure medium connection 2 (drainage channel) which opens axially from below into the valve housing, either to interrupt or to connect. Furthermore, the valve housing 8, 9 accommodates a valve seat 4 facing the first valve closing member 13 and a magnet armature 14 which actuates the valve tappet 6 and which is movably arranged within a valve coil 20 arranged on the valve housing 8, 9.
Zur sicheren Befestigung des den Ventilsitz 4 aufweisenden Ventilsitzkörpers 5 als auch zur präzisen Führung des Ventilstößels 6 in Richtung auf den Ventilsitz 4 ist gemäß der Erfindung jedes der beiden Druckregelventile derart konstruiert, dass der Ventilsitzkörper 5 mittels eines den Ventilstößel 6 führenden Zentrierkörpers 7 im Ventilgehäuse 8, 9 fixiert ist. Der Zentrierkörper 7 ist hierzu bevorzugt mittels einer besonders einfach zu realisierenden PressVerbindung im Ventilgehäuse 8, 9 gehalten.For the secure attachment of the valve seat body 5 having the valve seat 4 and for the precise guidance of the valve tappet 6 in the direction of the valve seat 4, according to the invention, each of the two pressure control valves is constructed in such a way that the valve seat body 5 by means of a centering body 7 guiding the valve tappet 6 in the valve housing 8 , 9 is fixed. For this purpose, the centering body 7 is preferably held in the valve housing 8, 9 by means of a press connection that is particularly simple to implement.
Selbstverständlich sind, auch stoff-, form- und/oder andere kraftschlüssige Befestigungsmaßnahmen denkbar, die nach Abwägung der Vor- und Nachteile bei Wunsch oder Bedarf zur Anwendung gelangen können.Of course, material, form and / or other non-positive fastening measures are also conceivable which, after weighing up the advantages and disadvantages, can be used if desired or required.
Zur Druckmittelregelung in Richtung eines sog. dritten Druckmittelanschlusses 3 (Leckageanschluss) ist neben einer mittig im Zentrierkörper 7 angeordneten Zentrieröffnung 11, durch die sich der Ventilstößel 6 erstreckt, ein Durchgang 12 angeordnet, wozu die taschenförmige Vertiefung des Zentierkörpers 7 zwei ausgestanzte Löcher aufweist, die durch ein weiteres am Ventilstößel 6 befestigtes Ventilschließglied 27 verschließbar sind. Die dem weiteren Ventilschließglied 27 zugewandte Oberfläche des kappenförmigen Zentrierkörpers 7 weist daher zur Aufnahme des weiteren Ventilschließgüedes 27 eine an die Kontur des weiteren Ventilschließgliedes 27 angepasste Ventilsitzfläche 10 auf, um die Druckmittelverbindung zwischen den beiden Druckmittelkanälen 1, 2 und dem dritten Druckmittelanschlusses 3 abhängig von der Stellung des Ventilstößels 6 jederzeit trennen zu können. In einer besonders einfachen Ausführungsform ist das zweite Ventilschüeßgüed 13 als plattenförmiges Sitzventil ausgeführt ist, welches bevorzugt durch Stanzen, Prägen oder Tiefziehen von Dünnblech zu einer Ringscheibe hergestellt ist, die mittels einer Presspassung am Ventilstößel 6 befestigt ist.For pressure medium control in the direction of a so-called third pressure medium connection 3 (leakage connection) is next to one A passage 12 is arranged in the center of the centering body 7, through which the valve tappet 6 extends, for which purpose the pocket-shaped recess of the centering body 7 has two punched holes which can be closed by a further valve closing member 27 fastened to the valve tappet 6. The surface of the cap-shaped centering body 7 facing the further valve closing member 27 therefore has a valve seat surface 10 adapted to the contour of the further valve closing member 27 to accommodate the further valve closing member 27 in order to make the pressure medium connection between the two pressure medium channels 1, 2 and the third pressure medium connection 3 dependent on that To be able to separate the position of the valve lifter 6 at any time. In a particularly simple embodiment, the second Ventilschüeßgüed 13 is designed as a plate-shaped seat valve, which is preferably produced by stamping, embossing or deep-drawing thin sheet metal to form an annular disk which is attached to the valve tappet 6 by means of a press fit.
Um auch das Ventilgehause möglichst kleinbauend sowie kostengünstig herstellen zu können, besteht dieses aus einem ersten und einem zweiten Gehäuseteil 8, 9, wobei das erste Gehäuseteil 8 als im Tiefziehverfahren hergestellter Gehäusetopf ausgeführt ist, in den der Ventilsitzkörper 5 und der Zentrierkörper 7 eingepresst sind. Das erste Gehäuseteil 8 ist mittels einer Pressverbindung am Bund 15 des zweiten Gehäuseteil 9 auf besonders einfache Weise druckmitteldicht befestigt, wobei das zweite Gehäuseteil 9 zur Aufnahme der für den Magnetkreis relevanter Teile (Magnetanker 14, Ventilspule 20) als rohrförmiges Kaltfließpreßteil oder Drehteil ausgeführt ist. Zur kostengünstigen Herstellung ist der Magnetanker 14 als Hohlzyünder ausgeführt, in den eine im Tiefziehverfahren hergestellte Magnetankerhülse 16 eingepresst ist, die mit ihren Hülsenenden beiderseits der Stirnflächen des Magnetankers 14 hervorsteht. Das untere Hülsenende weist einen Anschlag 17 für den Ventilstößel 6 auf, während auf der vom Ventilstößel 6 abgewandten Seite des Anschlags 17 eine innerhalb der Magnetankerhülse 16 angeordnete Druckfeder 18 platzsparend untergebracht ist, die von einer im Jochring 19 justierten Einstellhülse 21 beaufschlagt ist.In order to be able to manufacture the valve housing as small as possible and inexpensively, it consists of a first and a second housing part 8, 9, the first housing part 8 being designed as a deep-drawn housing pot into which the valve seat body 5 and the centering body 7 are pressed. The first housing part 8 is fastened to the collar 15 of the second housing part 9 in a particularly simple manner in a pressure-tight manner by means of a press connection, the second housing part 9 being designed as a tubular cold extrusion or turned part for receiving the parts relevant for the magnetic circuit (magnet armature 14, valve coil 20). For cost-effective manufacture, the magnet armature 14 is designed as a hollow igniter, into which a magnet armature sleeve 16, which is produced in the deep-drawing process, is pressed and which projects with its sleeve ends on both sides of the end faces of the magnet armature 14. The lower sleeve end has a stop 17 for the valve tappet 6, while on the side of the stop 17 facing away from the valve tappet 6, a compression spring 18 arranged inside the magnet armature sleeve 16 is accommodated in a space-saving manner and is acted upon by an adjusting sleeve 21 adjusted in the yoke ring 19.
Der Jochring 19 besteht aus einem im Tiefziehverfahren hergestellten Blechteil, der über den Außenumfang der Ventilspule 20 gestülpt ist. Der Jochring 19 ist mit seinem vom Ventilgehäuse 9 abgewandten Ende um die Oberkante der Ventilspule 20 nach innen abgekröpft und mittels einer Preßverbindung mit einem Rohr 22 verbunden, das sich mit seinem vom Abkröpfungsbereich entfernten Ende zwischen der Ventilspule 20 und dem Magnetanker 14 in Richtung auf die Stirnfläche des zweiten Gehäuseteils 9 erstreckt. Zur Grundpositionierung des Magnetankers 14 weist das Rohr 22 im Anschluss an seinen Presspassungsbereich im Jochring 19 eine im Durchmesser erweiterten Stufenabschnitt (23) auf, an dem sich die Magnetankerhülse (16) abstützt.The yoke ring 19 consists of a sheet metal part produced in the deep-drawing process, which is placed over the outer circumference of the valve coil 20. The yoke ring 19 is bent with its end facing away from the valve housing 9 inwards around the upper edge of the valve coil 20 and is connected by means of a press connection to a tube 22 which, with its end remote from the offset region, extends between the valve coil 20 and the magnet armature 14 in the direction of the End face of the second housing part 9 extends. For the basic positioning of the magnet armature 14, the tube 22, following its press-fit area in the yoke ring 19, has a step section (23) with an enlarged diameter, on which the magnet armature sleeve (16) is supported.
Ein mit einem Ringfiltergewebe versehener Filtertopf 24 ist auf das erste Gehäuseteil 8 aufgepresst, wobei am Boden des Filtertopf 24 ein Stift 25 angeordnet ist, der eine mittig im Ventilsitzkörper 5 angeordnete Stufenbohrung 26 verschließt, in der das erste Ventilschüeßgüed 13 eingesetzt ist. Oberhalb des Stifts 25 mündet in die Stufenbohrung 26 ein Querkanal 28 ein, der mit dem radial in die Wand des ersten Gehäuseteils 8 einmündenden ersten Druckmittelanschluss 1 permanent verbunden ist. Der zweite Druckmittelanschluss 2 erstreckt sich als Längskanal außermittig durch den Boden des Filtertopfs 24 sowie durch den Boden des Ventilsitzkörpers 5 in den Hohlraum des ersten Gehäuseteils 8, in dem sich der Zentrierkörper 7 befindet und ist von dort aus (abhängig von der Stellung der beiden Ventilschüeßgüeder 13, 27) mit dem ersten und/oder mit dem dritten Druckmittelanschluss 1, 3 verbunden.A filter bowl 24 provided with a ring filter fabric is pressed onto the first housing part 8, a pin 25 being arranged at the bottom of the filter bowl 24, which pin closes a stepped bore 26 arranged in the center of the valve seat body 5, in which the first valve plug 13 is inserted. Above the pin 25, a transverse channel 28 opens into the stepped bore 26 and is permanently connected to the first pressure medium connection 1 opening radially into the wall of the first housing part 8. The second pressure medium connection 2 extends as a longitudinal channel eccentrically through the bottom of the filter bowl 24 and through the bottom of the valve seat body 5 into the cavity of the first housing part 8, in which the centering body 7 is located and from there (depending on the position of the two Ventilschüeßgüeder 13, 27) with the first and / or connected to the third pressure medium connection 1, 3.
Der Filtertopf 24 ist aus einem Kunststoff hergestellt, der an beiden Enden Umfangsnuten aufweist, in die Dichtringe 30 eingesetzt sind, die entlang der Bohrungswand eines das Druckregelventil aufnehmenden Ventilträgers 31 dichtend anliegen. An der Oberkante des Ventilträgers 31 stützt sich das topfförmige Gehäuseteil 8 mit seinem radial nach außen abgekröpften Rand ab, auf dem ein Vorsprung des zweiten Gehäuseteils 9 unter Wirkung einer axialen Montagekraft das Druckregelventil im Ventilträger 31 hält.The filter bowl 24 is made of a plastic, which has circumferential grooves at both ends, into which sealing rings 30 are inserted, which lie sealingly along the bore wall of a valve carrier 31 receiving the pressure regulating valve. On the upper edge of the valve carrier 31, the cup-shaped housing part 8 is supported with its radially outwardly bent edge, on which a projection of the second housing part 9 holds the pressure control valve in the valve carrier 31 under the action of an axial assembly force.
Losgelöst von den bisher dargestellten Gemeinsamkeiten beider Druckregelventile sollen nunmehr deren Unterschiede aufgezeigt werden.Detached from the commonalities of the two pressure control valves shown so far, their differences are now to be shown.
In der Ausführungsform nach Figur 1 befindet sich das kugelförmige erste Ventilschließglied 13 in der elektromagnetisch nicht erregten Grundstellung des Magnetankers 14 in seiner abgebildeten Schließstellung am Ventilsitz 4, da zwischen dem topfförmigen Anschlag 17 und dem zweiten Gehäuseteil 9 eine Rückstellfeder 29 angeordnet ist, deren Kraft größer ist als die entgegenwirkende Kraft der Druckfeder 18. Gleichzeitig ist das weitere plattenförmige Ventilschließglied 27 von der Ventilsitzfläche 10 abgehoben, so dass durch den Längskanal des Ventilsitzkörpers 5 der zweite Druckmittelanschluss 2 ausschließlich mit dem dritten Druckmittelanschluss 3 verbunden ist. Sobald infolge der elektromagnetischen Erregung des Magnetankers 14 das kugelförmige Ventilschließglied 13 durch den Ventilstößel 6 vom Ventilsitz 4 abgehoben wird, vergrößert sich der Durchlass im Ventilsitzkörper 5 reziprok proportional zum Durchlass im Zentrrierkörper 7, so dass der Durchlass in Richtung des dritten Druckmittelanschlusses 3 allmählich abgeregelt wird, wenn der Ventilsitz 4 zwischen dem ersten und zweiten Druckmittelanschluss 1, 2 zunehmend freigegeben wird.In the embodiment according to FIG. 1, the spherical first valve closing element 13 is in the electromagnetically non-energized basic position of the armature 14 in its closed position on the valve seat 4, since a return spring 29 is arranged between the cup-shaped stop 17 and the second housing part 9, the force of which is greater is the counteracting force of the compression spring 18. At the same time, the further plate-shaped valve closing member 27 is lifted off the valve seat surface 10, so that the second pressure medium connection 2 is connected exclusively to the third pressure medium connection 3 through the longitudinal channel of the valve seat body 5. As soon as the spherical valve closing member 13 is lifted from the valve seat 4 by the valve tappet 6 as a result of the electromagnetic excitation of the magnet armature 14, the passage in the valve seat body 5 increases reciprocally in proportion to the passage in the centering body 7, so that the passage in the direction of the third pressure medium connection 3 is gradually reduced , when the valve seat 4 between the first and second pressure medium connection 1, 2 is increasingly released.
Hingegen ist die Funktion des Druckregelventils nach Figur 2 genau umgekehrt, da das kugelförmige Ventilschließglied 13 in der elektromagnetisch nicht erregten Grundstellung des Magnetankers 14 von seinem Ventilsitz 4 abgehoben und das plattenförmige Ventilschließglied 27 zwangsläufig geschlossen ist. Folglich besteht in dieser Ventilgrundstellung ausschließlich eine Druckmittelverbindung zwischen dem ersten und zweiten Druckmittelanschluss 1, 2, während der dritte Druckmittelanschluss 3 hiervon abgetrennt ist. Erst bei elektromagnetischer Erregung des Nagnetankers 14 kehren sich die Funktionsablaufe wieder um, indem das kugelförmige Ventilschließglied 13 vom Ventilstößel 6 freigegeben wird, wodurch sich zur Unterbrechung der Verbindung des ersten mit dem zweiten Druckmittelanschluss 1, 2 die Kugel am Ventilsitz 4 anlegen kann, während sich das plattenförmige Ventilschließglied 27 im stetigen synchronen Bewegungsablauf von seiner Ventilsitzfläche 10 entfernt, um den zweiten Druckmittelanschluss 2 ausschließlich mit dem dritten Druckmittelanschluss 3 zu verbinden..In contrast, the function of the pressure control valve according to FIG. 2 is exactly the opposite, since the spherical valve closing member 13 is lifted from its valve seat 4 in the electromagnetically non-energized basic position of the magnet armature 14 and the plate-shaped valve closing member 27 is inevitably closed. Consequently, in this basic valve position there is only a pressure medium connection between the first and second pressure medium connections 1, 2, while the third pressure medium connection 3 is separated therefrom. Only when the magnetic armature 14 is energized electromagnetically, the functional sequences are reversed again, in that the spherical valve closing member 13 is released by the valve tappet 6, whereby the ball can rest on the valve seat 4 while interrupting the connection of the first to the second pressure medium connection 1, 2 the plate-shaped valve closing member 27 is removed from its valve seat surface 10 in a steady, synchronous sequence of movements in order to connect the second pressure medium connection 2 exclusively to the third pressure medium connection 3.
Abweichend vom Ausführungsbeispiel nach Figur 1 übernimmt das Rohr 22 in der Ventilkonstruktion nach Figur 2 zusätzlich die Funktion des Magnetkerns, wodurch ein verblüffend einfacher Aufbau des Magnetkerns realisiert ist. Das Druckregelventil nach Figur 3 unterscheidet sich vom Druckregelventil nach Figur 1 durch einen im Innenbereich der Ventilspule 20 besonders tief in Richtung des Ventilgehäuses 9 heruntergezogenen Jochring 19, in dem der Magnetanker 14 geführt ist. Hierdurch lässt sich das Rohr 22 mit konstantem Durchmesser besonders einfach als Kaltschlagoder Tiefziehteil ausführen. Weiterhin unterscheidet sich das Druckregelventil nach Figur 3 vom Druckregelventil nach Figur 1 durch die einstückige Ausbildung der Magnetankerhülse 16 mit dem Anschlag. Die weiteren abgebildeten Merkmale des Druckregelventils nach Figur 3 sind dem Beschreibungsteil zu Figur 1 entnehmbar.In a departure from the exemplary embodiment according to FIG. 1, the tube 22 in the valve construction according to FIG. 2 additionally takes on the function of the magnetic core, as a result of which an amazingly simple structure of the magnetic core is realized. The pressure regulating valve according to FIG. 3 differs from the pressure regulating valve according to FIG. 1 by a yoke ring 19 which is pulled down particularly deep in the interior of the valve coil 20 in the direction of the valve housing 9 and in which the magnet armature 14 is guided. As a result, the tube 22 with a constant diameter can be designed particularly easily as a cold-drawn or deep-drawn part. Furthermore, the pressure regulating valve according to FIG. 3 differs from the pressure regulating valve according to FIG. 1 by the one-piece design of the magnet armature sleeve 16 with the stop. The further illustrated features of the pressure control valve according to FIG. 3 can be found in the description part of FIG. 1.
Das Druckregelventil nach Figur 4 unterscheidet sich vom Druckregelventil nach Figur 2 durch einen im Innenbereich der Ventilspule 20 tiefer in Richtung des Ventilgehäuses 9 heruntergezogenen Jochring 19, in dem der Magnetanker 14 im oberen Endbereich geführt ist. Hierdurch lässt sich das Rohr 22 mit konstantem Durchmesser besonders einfach als Kaltschlag- oder Tiefziehteil ausführen. Die weiteren abgebildeten Merkmale des Druckregelventils nach Figur 4 sind dem Beschreibungsteil zu Figur 2 entnehmbar.The pressure regulating valve according to FIG. 4 differs from the pressure regulating valve according to FIG. 2 by a yoke ring 19 which is drawn lower in the inner region of the valve coil 20 in the direction of the valve housing 9 and in which the magnet armature 14 is guided in the upper end region. As a result, the tube 22 with a constant diameter can be designed particularly easily as a cold-drawn or deep-drawn part. The further illustrated features of the pressure control valve according to FIG. 4 can be found in the description part of FIG. 2.
Durch die beschriebenen Detailänderungen an den Druckregelventilen nach Fig. 1, 2, die sich in den Figuren 3, 4 wiederspiegeln, lassen sich bis auf den Jochring 19 und das Ventilgehäuse 9 identische Bauteile sowohl für die Ausführungsform des Druckregel*ventils als in Grundstellung geschlossenes Sitzventil (Fig. 1, 3) als auch für die Ausführungsform des Druckregelventils als in Grundstellung geöffnetes Sitzventil (Fig. 2, 4) verwenden. Bezugs zeichenlisteThe described changes in detail of the pressure control valves according to Fig. 1, 2, which are reflected in Figures 3, 4, can be up to the yoke ring 19 and the valve housing 9, identical components for both the embodiment of the pressure regulating * valve and closed in the basic position poppet valve (Fig. 1, 3) as well as for the embodiment of the pressure control valve as a seat valve open in the basic position (Fig. 2, 4). Reference character list
1 Druckmittelanschluss 2 Druckmittelanschluss 3 Druckmittelanschluss 4 Ventilsitz 5 Ventilsitzkörper 6 Ventilstößel 7 Zentrierkörper 8 Ventilgehäuse 9 Ventilgehäuse 10 Ventilsitzfläche 11 ZentrierÖffnung 12 Durchgang 13 Ventilschließglied 14 Magnetanker 15 Bund 16 Magnetankerhülse 17 Anschlag 18 Druckfeder 19 Jochring 20 Ventilspule 21 Einstellhülse 22 Rohr 23 Stufenabschnitt 24 Filtertopf 25 Stift 26 Stufenbohrung 27 Ventilschließglied 28 Querkanal 29 Rückstellfeder 30 Dichtring 31 Ventilträger 1 pressure medium connection 2 pressure medium connection 3 pressure medium connection 4 valve seat 5 valve seat body 6 valve tappet 7 centering body 8 valve housing 9 valve housing 10 valve seat surface 11 centering opening 12 passage 13 valve closing member 14 magnet armature 15 collar 16 magnet armature sleeve 17 stop 18 compression spring 19 yoke ring 20 valve coil 21 adjusting sleeve 22 tube 23 step section 24 filter bowl 25 pin 26 stepped bore 27 valve closing member 28 cross channel 29 return spring 30 sealing ring 31 valve carrier

Claims

Patentansprüche claims
1. Druckregelventil, insbesondere zur Regelung des Hydraulikdrucks in einem Kraftfahrzeuggetriebe, mit einem in einem Ventilgehäuse geführten Ventilstößel, der wenigstens ein erstes Ventilschließglied zum Unterbrechen oder Verbinden eines ersten Druckmittelanschlusses mit einem zweiten Druckmittelanschluss aufweist, mit einem dem ersten Ventilschließglied zugewandten Ventilsitz, sowie mit einem den Ventilstößel betätigenden Magnetanker, der innerhalb einer am Ventilgehäuse angeordneten Ventilspule beweglich angeordnet ist, dadurch gekennzeichnet, dass der Ventilsitz (4) innerhalb eines eigenständig handhabbaren Ventilsitzkörpers (5) angeordnet ist, der mittels eines den Ventilstößel (6) führenden Zentrierkörpers (7) im Ventilgehäuse fixiert ist.1.Pressure control valve, in particular for regulating the hydraulic pressure in a motor vehicle transmission, with a valve tappet guided in a valve housing, which has at least one first valve closing element for interrupting or connecting a first pressure medium connection to a second pressure medium connection, with a valve seat facing the first valve closing element, and with one The magnet tappet which actuates the valve tappet and which is movably arranged within a valve coil arranged on the valve housing, characterized in that the valve seat (4) is arranged within an independently manageable valve seat body (5) which by means of a centering body (7) guiding the valve tappet (6) Valve housing is fixed.
2. Elektromagnetventil nach Anspruch 1, dadurch gekennzeichnet, dass der Zentrierkörper (7) form- und/oder kraftschlüssig, vorzugsweise mittels einer Pressverbindung im Ventilgehäuse gehalten ist.2. Electromagnetic valve according to claim 1, characterized in that the centering body (7) is held in a positive and / or non-positive manner, preferably by means of a press connection in the valve housing.
3. Elektromagnetventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Zentrierkörper (7) eine Ventilsitzfläche (10) und zur Führung des Ventilstößels (6) eine Zentrieröffnung (11) aufweist, und dass neben der Zentrieröffnung (11) der Zentrierkörper (7) wenigstens von einem Durchgang (12) durchdrungen ist, der mittels eines am Ventilstößel (6) angebrachten und an der Ventilsitzfläche (10) des Zentrierkörpers (7) anlegbaren zweiten Ventilschließgliedes (13) in Richtung eines dritten Druckmittelanschlusses (3) verschließbar ist ,3. Electromagnetic valve according to claim 1 or 2, characterized in that the centering body (7) has a valve seat surface (10) and for guiding the valve tappet (6) has a centering opening (11), and in addition to the centering opening (11), the centering body (7 ) is penetrated by at least one passage (12) which can be closed in the direction of a third pressure medium connection (3) by means of a second valve closing member (13) attached to the valve tappet (6) and placed on the valve seat surface (10) of the centering body (7) is
4. Elektromagnetventil nach Anspruch 3, dadurch gekennzeichnet, dass das zweite Ventilschließglied (13) als vorzugsweise plattenförmiges Sitzventil ausgeführt ist, welches bevorzugt durch Stanzen, Prägen oder Tiefziehen von Dünnblech hergestellt ist, welches auf den Ventilstößel (6) aufgepresst ist.4. Electromagnetic valve according to claim 3, characterized in that the second valve closing member (13) is designed as a preferably plate-shaped seat valve, which is preferably produced by stamping, embossing or deep drawing of thin sheet metal, which is pressed onto the valve tappet (6).
5. Elektromagnetventil nach Anspruch 1, dadurch gekennzeichnet, dass das Ventilgehäuse aus einem ersten und einem zweiten Gehäuseteil (8, 9) besteht, wobei das erste Gehäuseteil (8) als im Tiefziehverfahren hergestellter Gehäusetopf ausgeführt ist, in den der Ventilsitzkörper (5) und der Zentrierkörper (7) eingepresst sind.5. Electromagnetic valve according to claim 1, characterized in that the valve housing consists of a first and a second housing part (8, 9), the first housing part (8) being designed as a deep-drawn housing pot into which the valve seat body (5) and the centering body (7) are pressed in.
6. Elektromagnetventil nach Anspruch 5, dadurch gekennzeichnet, dass das erste Gehäuseteil (8) mittels einer PressVerbindung am zweiten Gehäuseteil (9) befestigt ist, welches zur Aufnahme eines Magnetankers (14) als rohrförmiges Kaltfließpreßteil oder Drehteil ausgeführt ist, das einen Bund (15) aufweist, an dem der erste Gehäuseteil (8) anliegt.6. Electromagnetic valve according to claim 5, characterized in that the first housing part (8) is fastened to the second housing part (9) by means of a press connection, which is designed to receive a magnet armature (14) as a tubular cold extrusion or rotating part that has a collar (15 ) on which the first housing part (8) rests.
7. Elektromagnetventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der Magnetanker (14) als Hohlzyünder ausgeführt ist, in den eine vorzugsweise im Tiefziehverfahren hergestellte Magnetankerhülse (16) eingepresst ist, die mit ihren Hülsenenden beiderseits der Stirnflächen des Magnetankers (14) hervorsteht.7. Solenoid valve according to one of the preceding claims, characterized in that the magnet armature (14) is designed as a hollow igniter, into which a magnet armature sleeve (16), preferably manufactured in the deep-drawing process, is pressed, which protrudes with its sleeve ends on both sides of the end faces of the magnet armature (14) ,
8. Elektromagnetventil nach Anspruch 7, dadurch gekennzeichnet, dass das eine Hülsenende einen Anschlag (17) zur Aufnahme des Ventilstößels (6) aufweist, und dass auf der vom Ventilstößel (6) abgewandten Seite des Anschlags (17) eine innerhalb der Magnetankerhülse (16) angeordneten Druckfeder (18) ruht, die von einer im Jochring (19) der Ventilspule (20) justierten Einstellhülse (21) beaufschlagt ist.8. Solenoid valve according to claim 7, characterized in that the one sleeve end has a stop (17) for receiving the valve tappet (6), and that on the side of the stop (17) facing away from the valve tappet (6) rests a compression spring (18) which is arranged inside the magnet armature sleeve (16) and which is supported by a in the yoke ring (19) the valve spool (20) adjusted adjusting sleeve (21) is acted upon.
9. Elektromagnetventil nach Anspruch 8, dadurch gekennzeichnet, dass der Jochring (19) aus einem im Tiefziehverfahren hergestellten Blechteil besteht, der über den Außenumfang der Ventilspule (20) gestülpt und im nach innen abgekröpften Bereich mit einem Rohr (22) verbunden ist, das sich zwischen der Ventilspule (20) und dem Magnetanker (14) erstreckt.9. Electromagnetic valve according to claim 8, characterized in that the yoke ring (19) consists of a sheet metal part produced in the deep-drawing process, which is placed over the outer circumference of the valve coil (20) and is connected in the inwardly bent region to a tube (22) which extends between the valve coil (20) and the magnet armature (14).
10. Elektromagnetventil nach Anspruch 9, dadurch gekennzeichnet, dass zur Grundpositionierung des Magnetankers (14) das Rohr (22) im Anschluss an seinen Presspassungsbereich im Jochring (19) eine im Durchmesser erweiterten Stufenabschnitt (23) aufweist, an der sich die Magnetankerhülse (16) abstützt.10. Electromagnetic valve according to claim 9, characterized in that for the basic positioning of the magnet armature (14), the tube (22) in connection with its press-fit region in the yoke ring (19) has a stepped portion (23) with a larger diameter, on which the magnet armature sleeve (16 ) supports.
11. Elektromagnetventil nach Anspruch 5, dadurch gekennzeichnet, dass ein mit einem Ringfiltergewebe versehener Filtertopf (24) auf das erste Gehäuseteil (8) aufgepresst ist, wobei am Boden des Filtertopf (24) ein Stift (25) angeordnet ist, der eine mittig im Ventilsitzkörper (5) angeordnete Stufenbohrung (26) verschließt, in der das erste Ventilschließglied (27) eingesetzt ist.11. Solenoid valve according to claim 5, characterized in that a filter bowl (24) provided with a ring filter fabric is pressed onto the first housing part (8), a pin (25) being arranged on the bottom of the filter bowl (24), which has a center in the Valve seat body (5) closes the stepped bore (26) in which the first valve closing member (27) is inserted.
12. Elektromagnetventil nach Anspruch 11, dadurch gekennzeichnet, dass oberhalb des Stifts (25) in die Stufenbohrung (26) ein Querkanal (28) einmündet, der mit dem radial in die Wand des ersten Gehäuseteils (8) einmündenden ersten Druckmittelanschluss (1) verbunden ist.12. Solenoid valve according to claim 11, characterized in that above the pin (25) in the stepped bore (26) opens a transverse channel (28) with the radially into the wall of the first housing part (8) opening first pressure medium connection (1) is connected.
13. Elektromagnetventil nach Anspruch 11, dadurch gekennzeichnet, dass sich der zweite Druckmittelanschluss (2) als Längskanal außermittig durch den Boden des Filtertopfs (24) sowie durch den Boden des Ventilsitzkörpers (5) in den Innerraum des Zentrierkörpers (7) erstreckt und von dort aus abhängig von der Stellung der beiden Ventilschüeßgüeder (13, 27) mit dem ersten und/oder mit dem dritten Druckmittelanschluss (1, 3) verbunden ist. 13. Solenoid valve according to claim 11, characterized in that the second pressure medium connection (2) extends as a longitudinal channel off-center through the bottom of the filter bowl (24) and through the bottom of the valve seat body (5) into the interior of the centering body (7) and from there depending on the position of the two Ventilschüeßgüeder (13, 27) with the first and / or with the third pressure medium connection (1, 3).
EP04804515A 2003-11-29 2004-11-05 Pressure control valve Withdrawn EP1690149A1 (en)

Applications Claiming Priority (3)

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DE10355911 2003-11-29
DE102004024301A DE102004024301A1 (en) 2003-11-29 2004-05-15 Pressure control valve for hydraulic pressure has centering element to guide the valve tappet
PCT/EP2004/052824 WO2005052711A1 (en) 2003-11-29 2004-11-05 Pressure control valve

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DE102013200533B4 (en) * 2013-01-16 2016-01-21 Rausch & Pausch Gmbh VALVE CARTRIDGE
DE102019203028A1 (en) * 2019-03-06 2020-09-10 Robert Bosch Gmbh Electromagnetically operated actuator with progressive characteristic
US20230375102A1 (en) * 2022-05-23 2023-11-23 Husco Automotive Holdings Llc Solenoid Valve

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