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EP0667458A1 - Proportional solenoid-valve unit - Google Patents

Proportional solenoid-valve unit Download PDF

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Publication number
EP0667458A1
EP0667458A1 EP95100335A EP95100335A EP0667458A1 EP 0667458 A1 EP0667458 A1 EP 0667458A1 EP 95100335 A EP95100335 A EP 95100335A EP 95100335 A EP95100335 A EP 95100335A EP 0667458 A1 EP0667458 A1 EP 0667458A1
Authority
EP
European Patent Office
Prior art keywords
housing
valve
valve unit
unit according
valve housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95100335A
Other languages
German (de)
French (fr)
Other versions
EP0667458B1 (en
Inventor
Bernd Niethammer
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.)
HYDRAULIK-RING ANTRIEBS- und STEUERUNGSTECHNIK GmbH
Hilite Germany GmbH
Original Assignee
HYDRAULIK-RING ANTRIEBS- und STEUERUNGSTECHNIK GmbH
Hydraulik Ring GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HYDRAULIK-RING ANTRIEBS- und STEUERUNGSTECHNIK GmbH, Hydraulik Ring GmbH filed Critical HYDRAULIK-RING ANTRIEBS- und STEUERUNGSTECHNIK GmbH
Publication of EP0667458A1 publication Critical patent/EP0667458A1/en
Application granted granted Critical
Publication of EP0667458B1 publication Critical patent/EP0667458B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • F15B13/0442—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors with proportional solenoid allowing stable intermediate positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B2013/041—Valve members; Fluid interconnections therefor with two positions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86879—Reciprocating valve unit

Definitions

  • the invention relates to a proportional solenoid valve unit according to the preamble of claim 1.
  • valve housing is sealed with sealing rings in the receiving space of the installation housing.
  • valve housing has a threaded bore at its end facing the electromagnet, into which a threaded part of the electromagnet is screwed.
  • the unit connected in this way consisting of the valve housing and the electromagnet, is secured with a holding plate and fastened on the installation housing. So that the sealing rings of the valve housing are not damaged during installation in the installation housing, insertion bevels must be provided at the end of the receiving space of the installation housing. This requires additional process steps in the production of this receiving space.
  • the valve housing must also be provided with grooves for inserting the sealing rings in complex work steps. The tapped hole also requires complex and expensive production.
  • the invention has for its object to design the generic proportional solenoid valve unit so that it consists of only a few components, which are standard components as possible and which can be easily and inexpensively manufactured and assembled.
  • the receiving space of the installation housing has a constant diameter over its length.
  • this receiving space can be produced in a single process step, for example by drilling.
  • the receiving space has no steps or threads. Therefore, the valve housing can be provided with a smooth outer wall, which bears sealingly against the inner wall of the receiving space of the installation housing. Additional sealing rings are not required. Rather, the seal is ensured by the overlap between the wall of the receiving space of the installation housing and the valve housing.
  • the valve housing is connected to the installation housing and the electromagnet by means of appropriate flanging, which can be carried out easily.
  • the proportional solenoid valve unit according to the invention thus consists of only a few components that can be manufactured inexpensively and the installation of which does not require any additional method or manufacturing steps. Therefore, the proportional solenoid valve unit according to the invention can be manufactured and assembled extremely inexpensively.
  • the proportional solenoid valve unit is used to control or regulate a unit (not shown).
  • a unit can be, for example, a piston-cylinder unit, which is part of a power steering system of a motor vehicle, for example.
  • the proportional solenoid valve unit has an electromagnet 1, which is designed in a known manner and is therefore not described in detail. It has a plunger 2 (FIG. 2) which is displaced in the axial direction when the electromagnet 1 is energized. With the plunger 2, a piston 3 is moved against the force of a compression spring 4. The piston 3 and the compression spring 4 are accommodated in a valve housing 5, which in turn is arranged in an installation housing 6.
  • the installation housing 6 has a continuous receiving opening 7 which has a constant diameter over its length. As a result, this receiving opening 7 can be produced very easily in a single step.
  • the valve housing 5 can be inserted very easily into this receiving opening 7. It lies with its cylindrical wall 8 on the opening wall.
  • the installation housing 6 has on its side facing away from the electromagnet 1 an annular projection 9, which is penetrated by the receiving opening 7.
  • the valve housing 5 projects axially over the annular projection 9.
  • the valve housing 5 has no grooves on its outer wall 8 for inserting sealing rings.
  • the seal between the installation housing 6 and the valve housing 5 is achieved solely by the overlap between the wall of the receiving opening 7 and the outer wall 8 of the valve housing 5.
  • the valve housing 5 has two working connections 10 and 11 and one between them the pressure connection 12.
  • the installation housing 6 has bores adjoining the work connections 10, 11, of which only the bore 13 adjoining the work connection 10 is shown in FIG. 2.
  • the pressure connection 12 is connected via a bore (not shown) in the installation housing 6 to the hydraulic system pump, also not shown.
  • the hydraulic medium is supplied via the pressure connection 12 and, depending on the position of the piston 5, is supplied to the working connection 10 or the working connection 11.
  • the valve housing 5 has an annular groove 14 on the outside near its end facing away from the electromagnet 1, into which the projection 9 of the installation housing 6 engages with a corresponding flange 15.
  • the projection 9 has a wall thickness such that the flange 15 can be attached simply after the valve housing 5 has been inserted into the receiving opening 7 of the installation housing 6. In this way, the valve housing 5 and the installation housing 6 can be connected to one another very easily.
  • the valve housing 5 has a thin-walled, sleeve-shaped projection 16 which surrounds a cylindrical connecting part 17 of the electromagnet 1.
  • the cylindrical projection 16 is flanged obliquely inwards and thus engages over the connecting part 17, which is conical in this area. It is also possible to provide the cylindrical projection 16 of the valve housing 5 with projecting tongues distributed over its circumference, which are bent obliquely inwards. In this way too, a simple, form-fitting connection acting in the axial direction can be established between the electromagnet 1 and the valve housing 5.
  • the projection 16 protrudes from an end face 18 of the valve housing 5, against which the connecting part 17 rests and which is penetrated by a central bore 19 in the valve housing 5.
  • the plunger 2 of the electromagnet 1 projects into the bore 19 and lies against the end face of the piston 3.
  • the piston 3 is mirror-symmetrical to its transverse central plane, so that it is not necessary to pay attention to its position when it is installed in the valve housing 5.
  • the piston 3 has two ring webs 20 and 21 spaced apart from one another, the width of which is slightly larger than the width of the working connections 10 and 11. In the middle position of the piston 3 shown in FIG. 2, the two working connections 10 and 11 are thereby through the ring webs 20, 21 of the piston 3 closed.
  • the valve housing 5 is provided with an axially projecting cylindrical projection 22. Axial incisions "are made in it to form plastically deformable tongues 23. As a result, the tongues 23 can be deformed radially inward. The tongues 23 serve to axially secure the compression spring 4. The tongues 23 can be bent in such a way by varying the amount of plastic deformation that the compression spring 4 has the pretensioning force required for the respective application.
  • the piston 3 is to assume the central position shown in FIG. 2 at a predetermined current intensity with which the electromagnet 1 is acted upon. In this central position, the working connections 10, 11 of the valve housing 5 are closed by the two ring webs 20, 21 of the piston 3.
  • the corresponding current intensity is applied to the electromagnet 1, as a result of which the plunger 2 extends correspondingly axially out of the electromagnet 1 and shifts the piston 3 to the right in FIG. 2.
  • the tongues 23 are now plastically bent inward until the annular webs 20, 21 of the piston 3 close the working connections 10, 11.
  • the valve unit can be set very easily during assembly, yet very precisely, so that the working connections are also reliably closed at the appropriate amperage.
  • the tongues 23 thus not only secure the compression spring 4 in its installed position, but at the same time also serve as adjusting means in order to adjust the valve unit to the corresponding current strength of the electromagnet in the manner described. While in the conventional valve housings for the axial support of the compression spring 4 an adjusting screw is required and a corresponding thread has to be produced, the adjusting screw and the production of a thread are omitted in the valve housing described. With this valve unit, an expensive component and a complex and accordingly expensive production are thus avoided, without this having an adverse effect on the functionality and in particular the setting of the valve unit.
  • the valve unit described with the electromagnet 1 can be inexpensively manufactured, assembled and installed in the installation housing 6 simply and inexpensively from very few components. In particular, there are no complex and expensive process steps in the manufacture of the built-in housing 6 and the valve housing 5 required.

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

Abstract

The valve has directional flow control provided by a spool (3) that is displaced axially within a constant diameter bore within a main housing block. Recesses in the spool (11) connect with supply and output ports (13). The spool is provided within a sleeve (5) that is retained within a constant diameter section by a ring groove section (14) at one end and an angled section (16) at the other. The electromagnetic actuator (1) fits onto the end of the housing and the armature (2) pushes against the spool.

Description

Die Erfindung betrifft eine Proportionalmagnet-Ventileinheit nach dem Oberbegriff des Anspruches 1.The invention relates to a proportional solenoid valve unit according to the preamble of claim 1.

Bei dieser bekannten Ventileinheit ist das Ventilgehäuse im Aufnahmeraum des Einbaugehäuses mit Dichtringen abgedichtet. Außerdem weist das Ventilgehäuse an seinem dem Elektromagneten zugewandten Ende eine Gewindebohrung auf, in die ein Gewindeteil des Elektromagneten geschraubt wird. Die so verbundene Einheit aus Ventilgehäuse und Elektromagnet wird mit einem Halteblech gesichert und auf dem Einbaugehäuse befestigt. Damit die Dichtringe des Ventilgehäuses beim Einbau in das Einbaugehäuse nicht beschädigt werden, müssen Einführschrägen am Ende des Aufnahmeraumes des Einbaugehäuses vorgesehen sein. Dies bedingt zusätzliche Verfahrensschritte bei der Herstellung dieses Aufnahmeraumes. Auch das Ventilgehäuse muß in aufwendigen Arbeitsschritten mit Nuten zum Einlegen der Dichtungsringe versehen werden. Die Gewindebohrung erfordert ebenfalls eine aufwendige und teuere Fertigung. Schließlich ist die Sicherung der Einheit aus Ventilgehäuse und Elektromagnet mittels des Haltebleches aufwendig, zumal hierfür als zusätzliches Bauteil das Halteblech und die dazugehörigen Schrauben erforderlich sind. Aus diesem Grunde ist diese Proportionalmagnet-Ventileinheit teuer in der Fertigung und aufwendig in der Montage.In this known valve unit, the valve housing is sealed with sealing rings in the receiving space of the installation housing. In addition, the valve housing has a threaded bore at its end facing the electromagnet, into which a threaded part of the electromagnet is screwed. The unit connected in this way, consisting of the valve housing and the electromagnet, is secured with a holding plate and fastened on the installation housing. So that the sealing rings of the valve housing are not damaged during installation in the installation housing, insertion bevels must be provided at the end of the receiving space of the installation housing. This requires additional process steps in the production of this receiving space. The valve housing must also be provided with grooves for inserting the sealing rings in complex work steps. The tapped hole also requires complex and expensive production. Finally, securing the unit comprising the valve housing and the electromagnet by means of the retaining plate is complex, especially since the retaining plate and the associated screws are required as an additional component. For this reason, this proportional solenoid valve unit is expensive to manufacture and complex to assemble.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Proportionalmagnet-Ventileinheit so auszubilden, daß sie aus nur wenigen Bauteilen besteht, die möglichst Standardbauteile sind und die dennoch einfach und kostengünstig hergestellt und montiert werden können.The invention has for its object to design the generic proportional solenoid valve unit so that it consists of only a few components, which are standard components as possible and which can be easily and inexpensively manufactured and assembled.

Diese Aufgabe wird bei der gattungsgemäßen Proportionalmagnet-Ventileinheit erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.This object is achieved with the generic proportional solenoid valve unit according to the invention with the characterizing features of claim 1.

Bei der erfindungsgemäßen Proportionalmagnet-Ventileinheit hat der Aufnahmeraum des Einbaugehäuses über seine Länge konstanten Durchmesser. Dadurch kann dieser Aufnahmeraum in einem einzigen Verfahrensschritt beispielsweise durch Bohren hergestellt werden. Der Aufnahmeraum weist weder Stufen noch Gewinde auf. Darum kann das Ventilgehäuse mit einer glatten Außenwand versehen sein, die dichtend an der Innenwandung des Aufnahmeraumes des Einbaugehäuses anliegt. Zusätzliche Dichtungsringe sind nicht erforderlich. Vielmehr wird die Dichtung durch die Überdeckung zwischen der Wandung des Aufnahmeraumes des Einbaugehäuses und dem Ventilgehäuse sichergestellt. Die Verbindung des Ventilgehäuses mit dem Einbaugehäuse und dem Elektromagneten erfolgt durch eine entsprechende Bördelung, die einfach vorgenommen werden kann. Die erfindungsgemäße Proportionalmagnet-Ventileinheit besteht somit aus nur wenigen Bauteilen, die kostengünstig gefertigt werden können und deren Einbau keine zusätzlichen Verfahrens- bzw. Herstellungsschritte erfordert. Darum kann die erfindungsgemäße Proportionalmagnet-Ventileinheit äußerst kostengünstig hergestellt und montiert werden.In the proportional solenoid valve unit according to the invention, the receiving space of the installation housing has a constant diameter over its length. As a result, this receiving space can be produced in a single process step, for example by drilling. The receiving space has no steps or threads. Therefore, the valve housing can be provided with a smooth outer wall, which bears sealingly against the inner wall of the receiving space of the installation housing. Additional sealing rings are not required. Rather, the seal is ensured by the overlap between the wall of the receiving space of the installation housing and the valve housing. The valve housing is connected to the installation housing and the electromagnet by means of appropriate flanging, which can be carried out easily. The proportional solenoid valve unit according to the invention thus consists of only a few components that can be manufactured inexpensively and the installation of which does not require any additional method or manufacturing steps. Therefore, the proportional solenoid valve unit according to the invention can be manufactured and assembled extremely inexpensively.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und den Zeichnungen.Further features of the invention result from the further claims, the description and the drawings.

Die Erfindung wird anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen

  • Fig. 1 eine Seitenansicht einer erfindungsgemäßen Proportionalmagnet-Ventileinheit, die in ein Einbaugehäuse eingesetzt ist,
  • Fig. 2 in vergrößerter Darstellung die erfindungsgemäße Proportionalmagnet-Ventileinheit teilweise in Ansicht und teilweise im Längsschnitt.
The invention is explained in more detail using an exemplary embodiment shown in the drawings. Show it
  • 1 is a side view of a proportional solenoid valve unit according to the invention, which is inserted into an installation housing,
  • Fig. 2 in an enlarged view, the proportional solenoid valve unit according to the invention partly in view and partly in longitudinal section.

Die Proportionalmagnet-Ventileinheit dient dazu, ein (nicht dargestelltes) Aggregat zu steuern oder zu regeln. Ein solches Aggregat kann beispielsweise eine Kolben-Zylinder-Einheit sein, die beispielsweise Teil einer Servolenkung eines Kraftfahrzeuges ist. Die Proportionalmagnet-Ventileinheit hat einen Elektromagneten 1, der in bekannter Weise ausgebildet und darum nicht im einzelnen beschrieben ist. Er hat einen Stößel 2 (Fig. 2), der beim Bestromen des Elektromagneten 1 in Achsrichtung verschoben wird. Mit dem Stößel 2 wird ein Kolben 3 gegen die Kraft einer Druckfeder 4 verschoben. Der Kolben 3 und die Druckfeder 4 sind in einem Ventilgehäuse 5 untergebracht, das seinerseits in einem Einbaugehäuse 6 angeordnet ist.The proportional solenoid valve unit is used to control or regulate a unit (not shown). Such a unit can be, for example, a piston-cylinder unit, which is part of a power steering system of a motor vehicle, for example. The proportional solenoid valve unit has an electromagnet 1, which is designed in a known manner and is therefore not described in detail. It has a plunger 2 (FIG. 2) which is displaced in the axial direction when the electromagnet 1 is energized. With the plunger 2, a piston 3 is moved against the force of a compression spring 4. The piston 3 and the compression spring 4 are accommodated in a valve housing 5, which in turn is arranged in an installation housing 6.

Wie Fig. 2 zeigt, hat das Einbaugehäuse 6 eine durchgehende Aufnahmeöffnung 7, die über ihre Länge konstanten Durchmesser hat. Dadurch läßt sich diese Aufnahmeöffnung 7 in einem einzigen Arbeitsschritt sehr einfach herstellen. In diese Aufnahmeöffnung 7 läßt sich das Ventilgehäuse 5 sehr einfach einsetzen. Es liegt mit seiner zylindrischen Wandung 8 an der Öffnungswandung an. Das Einbaugehäuse 6 hat an seiner vom Elektromagneten 1 abgewandten Seite einen ringförmigen Vorsprung 9, der von der Aufnahmeöffnung 7 durchsetzt ist. Das Ventilgehäuse 5 ragt axial über den ringförmigen Vorsprung 9.2 shows, the installation housing 6 has a continuous receiving opening 7 which has a constant diameter over its length. As a result, this receiving opening 7 can be produced very easily in a single step. The valve housing 5 can be inserted very easily into this receiving opening 7. It lies with its cylindrical wall 8 on the opening wall. The installation housing 6 has on its side facing away from the electromagnet 1 an annular projection 9, which is penetrated by the receiving opening 7. The valve housing 5 projects axially over the annular projection 9.

Das Ventilgehäuse 5 weist an seiner Außenwandung 8 keine Nuten zum Einlegen von Dichtungsringen auf. Die Abdichtung zwischen dem Einbaugehäuse 6 und dem Ventilgehäuse 5 wird allein durch die Überdeckung zwischen der Wandung der Aufnahmeöffnung 7 und der Außenwandung 8 des Ventilgehäuses 5 erreicht.The valve housing 5 has no grooves on its outer wall 8 for inserting sealing rings. The seal between the installation housing 6 and the valve housing 5 is achieved solely by the overlap between the wall of the receiving opening 7 and the outer wall 8 of the valve housing 5.

Das Ventilgehäuse 5 hat zwei Arbeitsanschlüsse 10 und 11 sowie einen zwischen diesen liegenden Druckanschluß 12. Das Einbaugehäuse 6 weist an die Arbeitsanschlüsse 10, 11 anschließende Bohrungen auf, von denen in Fig. 2 nur die an den Arbeitsanschluß 10 anschließende Bohrung 13 dargestellt ist. Der Druckanschluß 12 ist über eine (nicht dargestellte) Bohrung im Einbaugehäuse 6 mit der ebenfalls nicht dargestellten Pumpe des Hydrauliksystems verbunden. Über den Druckanschluß 12 wird das Hydraulikmedium zugeführt und je nach Stellung des Kolbens 5 dem Arbeitsanschluß 10 oder dem Arbeitsanschluß 11 zugeführt.The valve housing 5 has two working connections 10 and 11 and one between them the pressure connection 12. The installation housing 6 has bores adjoining the work connections 10, 11, of which only the bore 13 adjoining the work connection 10 is shown in FIG. 2. The pressure connection 12 is connected via a bore (not shown) in the installation housing 6 to the hydraulic system pump, also not shown. The hydraulic medium is supplied via the pressure connection 12 and, depending on the position of the piston 5, is supplied to the working connection 10 or the working connection 11.

Das Ventilgehäuse 5 weist nahe seinem vom Elektromagneten 1 abgewandten Ende außenseitig eine Ringnut 14 auf, in welche der Vorsprung 9 des Einbaugehäuses 6 mit einer entsprechenden Bördelung 15 eingreift. Der Vorsprung 9 hat eine solche Wandstärke, daß die Bördelung 15 einfach nach dem Einsetzen des Ventilgehäuses 5 in der Aufnahmeöffnung 7 des Einbaugehäuses 6 angebracht werden kann. Auf diese Weise lassen sich das Ventilgehäuse 5 und das Einbaugehäuse 6 sehr einfach miteinander verbinden.The valve housing 5 has an annular groove 14 on the outside near its end facing away from the electromagnet 1, into which the projection 9 of the installation housing 6 engages with a corresponding flange 15. The projection 9 has a wall thickness such that the flange 15 can be attached simply after the valve housing 5 has been inserted into the receiving opening 7 of the installation housing 6. In this way, the valve housing 5 and the installation housing 6 can be connected to one another very easily.

An seinem dem Elektromagneten 1 zugewandten Ende hat das Ventilgehäuse 5 einen dünnwandigen hülsenförmigen Vorsprung 16, der einen zylindrischen Anschlußteil 17 des Elektromagneten 1 umgreift. Der zylindrische Vorsprung 16 ist schräg nach innen gebördelt und übergreift somit den Anschlußteil 17, der in diesem Bereich kegelförmig ausgebildet ist. Es ist auch möglich, den zylindrischen Vorsprung 16 des Ventilgehäuses 5 mit über seinen Umfang verteilt angeordneten vorstehenden Zungen zu versehen, die schräg nach innen gebogen werden. Auch auf diese Weise läßt sich eine einfache, in Achsrichtung wirkende formschlüssige Verbindung zwischen dem Elektromagneten 1 und dem Ventilgehäuse 5 herstellen. Der Vorsprung 16 steht von einer Stirnseite 18 des Ventilgehäuses 5 ab, an der der Anschlußteil 17 anliegt und der von einer zentralen Bohrung 19 des Ventilgehäuses 5 durchsetzt wird. Der Stößel 2 des Elektromagneten 1 ragt in die Bohrung 19 und liegt an der Stirnseite des Kolbens 3 an.At its end facing the electromagnet 1, the valve housing 5 has a thin-walled, sleeve-shaped projection 16 which surrounds a cylindrical connecting part 17 of the electromagnet 1. The cylindrical projection 16 is flanged obliquely inwards and thus engages over the connecting part 17, which is conical in this area. It is also possible to provide the cylindrical projection 16 of the valve housing 5 with projecting tongues distributed over its circumference, which are bent obliquely inwards. In this way too, a simple, form-fitting connection acting in the axial direction can be established between the electromagnet 1 and the valve housing 5. The projection 16 protrudes from an end face 18 of the valve housing 5, against which the connecting part 17 rests and which is penetrated by a central bore 19 in the valve housing 5. The plunger 2 of the electromagnet 1 projects into the bore 19 and lies against the end face of the piston 3.

Der Kolben 3 ist spiegelsymmetrisch zu seiner Quermittelebene ausgebildet, so daß bei seinem Einbau in das Ventilgehäuse 5 nicht auf dessen Lage geachtet werden muß. Der Kolben 3 hat zwei mit Abstand voneinander liegende Ringstege 20 und 21, deren Breite geringfügig größer ist als die Breite der Arbeitsanschlüsse 10 und 11. In der in Fig. 2 dargestellten Mittelstellung des Kolbens 3 werden dadurch die beiden Arbeitsanschlüsse 10 und 11 durch die Ringstege 20, 21 des Kolbens 3 geschlossen.The piston 3 is mirror-symmetrical to its transverse central plane, so that it is not necessary to pay attention to its position when it is installed in the valve housing 5. The piston 3 has two ring webs 20 and 21 spaced apart from one another, the width of which is slightly larger than the width of the working connections 10 and 11. In the middle position of the piston 3 shown in FIG. 2, the two working connections 10 and 11 are thereby through the ring webs 20, 21 of the piston 3 closed.

An dem vom Elektromagneten 1 abgewandten Ende ist das Ventilgehäuse 5 mit einem axial vorstehenden zylindrischen Vorsprung 22 versehen. In ihn werden zur Bildung von plastisch verformbaren Zungen 23 axiale Einschnitte" eingebracht. Dadurch lassen sich die Zungen 23 radial nach innen verformen. Die Zungen 23 dienen zur Axialsicherung der Druckfeder 4. Durch unterschiedlich starke plastische Verformung können die Zungen 23 so abgebogen werden, daß die Druckfeder 4 die für den jeweiligen Einsatzfall erforderliche Vorspannkraft hat.At the end facing away from the electromagnet 1, the valve housing 5 is provided with an axially projecting cylindrical projection 22. Axial incisions "are made in it to form plastically deformable tongues 23. As a result, the tongues 23 can be deformed radially inward. The tongues 23 serve to axially secure the compression spring 4. The tongues 23 can be bent in such a way by varying the amount of plastic deformation that the compression spring 4 has the pretensioning force required for the respective application.

Der Kolben 3 soll die in Fig. 2 dargestellte Mittelstellung bei einer vorgegebenen Stromstärke, mit welcher der Elektromagnet 1 beaufschlagt wird, einnehmen. In dieser Mittellage sind die Arbeitsanschlüsse 10, 11 des Ventilgehäuses 5 durch die beiden Ringstege 20, 21 des Kolbens 3 geschlossen. Bei der Montage der Ventileinheit wird der Elektromagnet 1 mit der entsprechenden Stromstärke beaufschlagt, wodurch der Stößel 2 entsprechend weit axial aus dem Elektromagneten 1 ausfährt und den Kolben 3 in Fig. 2 nach rechts verschiebt. Während der Strombeaufschlagung des Elektromagneten werden die Zungen 23 nunmehr so weit plastisch nach innen gebogen, bis die Ringstege 20, 21 des Kolbens 3 die Arbeitsanschlüsse 10, 11 verschließen. Auf diese Weise läßt sich die Ventileinheit bei der Montage sehr einfach und dennoch sehr genau so einstellen, daß bei der entsprechenden Stromstärke die Arbeitsanschlüsse auch zuverlässig geschlossen sind. Die Zungen 23 sichern somit nicht nur die Druckfeder 4 in ihrer Einbaulage, sondern dienen gleichzeitig auch als Einstellmittel, um die Ventileinheit in der beschriebenen Weise auf die entsprechende Stromstärke des Elektromagneten einzustellen. Während bei den herkömmlichen Ventilgehäusen zur Axialabstützung der Druckfeder 4 eine Einstellschraube erforderlich ist und ein entsprechendes Gewinde gefertigt werden muß, entfallen bei dem beschriebenen Ventilgehäuse die Einstellschraube sowie die Herstellung eines Gewindes. Bei dieser Ventileinheit werden somit ein teures Bauteil sowie eine aufwendige und dementsprechend kostspielige Fertigung vermieden, ohne daß sich dies nachteilig auf die Funktionsfähigkeit und insbesondere die Einstellung der Ventileinheit auswirkt.The piston 3 is to assume the central position shown in FIG. 2 at a predetermined current intensity with which the electromagnet 1 is acted upon. In this central position, the working connections 10, 11 of the valve housing 5 are closed by the two ring webs 20, 21 of the piston 3. When the valve unit is assembled, the corresponding current intensity is applied to the electromagnet 1, as a result of which the plunger 2 extends correspondingly axially out of the electromagnet 1 and shifts the piston 3 to the right in FIG. 2. During the application of current to the electromagnet, the tongues 23 are now plastically bent inward until the annular webs 20, 21 of the piston 3 close the working connections 10, 11. In this way, the valve unit can be set very easily during assembly, yet very precisely, so that the working connections are also reliably closed at the appropriate amperage. The tongues 23 thus not only secure the compression spring 4 in its installed position, but at the same time also serve as adjusting means in order to adjust the valve unit to the corresponding current strength of the electromagnet in the manner described. While in the conventional valve housings for the axial support of the compression spring 4 an adjusting screw is required and a corresponding thread has to be produced, the adjusting screw and the production of a thread are omitted in the valve housing described. With this valve unit, an expensive component and a complex and accordingly expensive production are thus avoided, without this having an adverse effect on the functionality and in particular the setting of the valve unit.

Da die beiden Ringstege 20, 21 mit Abstand von den Enden des Kolbens 3 liegen, ragt das eine Kolbenende 24 in die Druckfeder 4. Vorteilhaft entspricht der Außendurchmesser des Kolbenendes 24 dem Innendurchmesser der Druckfeder 4, die dadurch an diesem Kolbenende einwandfrei geführt wird.Since the two ring webs 20, 21 lie at a distance from the ends of the piston 3, one piston end 24 projects into the compression spring 4. The outside diameter of the piston end 24 advantageously corresponds to the inside diameter of the compression spring 4, which is thereby guided properly at this piston end.

Die beschriebene Ventileinheit mit dem Elektromagneten 1 läßt sich aus nur sehr wenigen Bauteilen kostengünstig fertigen, montieren und einfach und kostengünstig in das Einbaugehäuse 6 einbauen. Insbesondere sind keine aufwendigen und teuren Verfahrensschritte bei der Herstellung des Einbaugehäuses 6 und des Ventilgehäuses 5 erforderlich.The valve unit described with the electromagnet 1 can be inexpensively manufactured, assembled and installed in the installation housing 6 simply and inexpensively from very few components. In particular, there are no complex and expensive process steps in the manufacture of the built-in housing 6 and the valve housing 5 required.

Claims (9)

1. Proportionalmagnet-Ventileinheit mit einem Einbaugehäuse, in dessen Aufnahmeraum ein Ventilgehäuse befestigt ist, das mit einem Elektromagneten verbunden ist und das einen Kolben aufweist, der durch einen Stößel des Elektromagneten gegen die Kraft wenigstens einer Druckfeder verschiebbar ist,
dadurch gekennzeichnet, daß der Aufnahmeraum (7) im Einbaugehäuse (6) über seine Länge konstanten Durchmesser hat, und daß das Ventilgehäuse (5) mit dem Einbaugehäuse (6) und dem Elektromagneten (1) durch Bördelteile (15, 16) verbunden ist.1. Proportional solenoid valve unit with a built-in housing, in the receiving space of which a valve housing is fastened, which is connected to an electromagnet and which has a piston which is displaceable against the force of at least one compression spring by a plunger of the electromagnet,
characterized in that the receiving space (7) in the installation housing (6) has a constant diameter over its length, and in that the valve housing (5) is connected to the installation housing (6) and the electromagnet (1) by flared parts (15, 16). 2. Ventileinheit nach Anspruch 1,
dadurch gekennzeichnet, daß das Ventilgehäuse (5) mindestens eine Ringnut (14) aufweist, in welche die Bördelung (15) des Einbaugehäuses (6) eingreift.2. Valve unit according to claim 1,
characterized in that the valve housing (5) has at least one annular groove (14) into which the flange (15) of the installation housing (6) engages. 3. Ventileinheit nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Bördelung (15) an einem Vorsprung (9) des Einbaugehäuses (6) vorgesehen ist.3. Valve unit according to claim 1 or 2,
characterized in that the flange (15) is provided on a projection (9) of the installation housing (6). 4. Ventileinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Bördelung (16) des Ventilgehäuses (5) an einem ringförmigen Vorsprung des Ventilgehäuses vorgesehen ist.4. Valve unit according to one of claims 1 to 3, characterized in that the flanging (16) of the valve housing (5) is provided on an annular projection of the valve housing. 5. Ventileinheit nach Anspruch 4,
dadurch gekennzeichnet, daß der ringförmige Vorsprung (16) des Ventilgehäuses (5) einen Anschlußteil (17) des Elektromagneten (1) übergreift.5. Valve unit according to claim 4,
characterized in that the annular projection (16) of the valve housing (5) engages over a connecting part (17) of the electromagnet (1). 6. Ventileinheit nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Bördelung (15) des Einbaugehäuses (6) und die Bördelung (16) des Ventilgehäuses (5) an einander gegenüberliegenden Enden des Ventilgehäuses (5) vorgesehen sind.6. Valve unit according to one of claims 1 to 5, characterized in that the flange (15) of the mounting housing (6) and the flange (16) of the valve housing (5) are provided at opposite ends of the valve housing (5). 7. Ventileinheit nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Ventilgehäuse (5) zur Abstützung der Druckfeder (4) wenigstens einen plastisch verformbaren Abschnitt (23) aufweist.7. Valve unit according to one of claims 1 to 6, characterized in that the valve housing (5) for supporting the compression spring (4) has at least one plastically deformable section (23). 8. Ventileinheit nach Anspruch 7,
dadurch gekennzeichnet, daß der plastisch verformbare Abschnitt (23) eine aus einem ringförmigen Vorsprung (22) des Ventilgehäuses (5) herausgebogene Zunge ist.8. Valve unit according to claim 7,
characterized in that the plastically deformable section (23) is a tongue bent out of an annular projection (22) of the valve housing (5). 9. Ventileinheit nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Kolben (3) symmetrisch zu seiner Quermittelebene ausgebildet ist.9. Valve unit according to one of claims 1 to 8, characterized in that the piston (3) is formed symmetrically to its transverse central plane.
EP95100335A 1994-02-10 1995-01-12 Proportional solenoid-valve unit Expired - Lifetime EP0667458B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9402205U DE9402205U1 (en) 1994-02-10 1994-02-10 Proportional solenoid valve unit
DE9402205U 1994-02-10

Publications (2)

Publication Number Publication Date
EP0667458A1 true EP0667458A1 (en) 1995-08-16
EP0667458B1 EP0667458B1 (en) 1998-07-29

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ID=6904398

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Application Number Title Priority Date Filing Date
EP95100335A Expired - Lifetime EP0667458B1 (en) 1994-02-10 1995-01-12 Proportional solenoid-valve unit

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US (1) US5487410A (en)
EP (1) EP0667458B1 (en)
JP (1) JPH07224964A (en)
DE (2) DE9402205U1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19634319A1 (en) * 1996-08-24 1998-02-26 Bosch Gmbh Robert Electro-hydraulic control device
DE19727180C2 (en) * 1997-06-26 2003-12-04 Hydraulik Ring Gmbh Hydraulic valve, in particular for controlling a camshaft adjustment in a motor vehicle
US5984259A (en) * 1997-11-26 1999-11-16 Saturn Electronics & Engineering, Inc. Proportional variable force solenoid control valve with armature damping
FR2817605B1 (en) * 2000-12-01 2005-05-20 Eaton Corp PROPORTIONAL SOLENOID VALVE FOR MOTOR COOLANT LIQUID CIRCUIT
JP2011077355A (en) * 2009-09-30 2011-04-14 Keihin Corp Linear solenoid and valve device using the same
CN101691890B (en) * 2009-10-13 2011-08-31 金仁召 Throttle valve

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DE3917418A1 (en) * 1989-05-29 1990-12-06 Vickers Systems Gmbh Electrohydraulic control valve - has fail-safe position provided by fluid pressure acting on sliding control piston
US5218999A (en) * 1990-05-17 1993-06-15 Mitsubishi Denki K.K. Solenoid valve
US5259414A (en) * 1988-11-09 1993-11-09 Aisin Aw Co., Ltd Pressure control valve

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Publication number Priority date Publication date Assignee Title
DE1282379B (en) * 1965-11-04 1968-11-07 Danfoss As Valve
JPH02129476A (en) * 1988-11-09 1990-05-17 Aisin Aw Co Ltd Pressure regulating valve

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US5259414A (en) * 1988-11-09 1993-11-09 Aisin Aw Co., Ltd Pressure control valve
DE3917418A1 (en) * 1989-05-29 1990-12-06 Vickers Systems Gmbh Electrohydraulic control valve - has fail-safe position provided by fluid pressure acting on sliding control piston
US5218999A (en) * 1990-05-17 1993-06-15 Mitsubishi Denki K.K. Solenoid valve

Also Published As

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DE9402205U1 (en) 1994-04-28
JPH07224964A (en) 1995-08-22
US5487410A (en) 1996-01-30
EP0667458B1 (en) 1998-07-29
DE59502938D1 (en) 1998-09-03

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