EP1386332B1 - Electromagnetic regulating device - Google Patents

Electromagnetic regulating device Download PDF

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Publication number
EP1386332B1
EP1386332B1 EP02740319A EP02740319A EP1386332B1 EP 1386332 B1 EP1386332 B1 EP 1386332B1 EP 02740319 A EP02740319 A EP 02740319A EP 02740319 A EP02740319 A EP 02740319A EP 1386332 B1 EP1386332 B1 EP 1386332B1
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EP
European Patent Office
Prior art keywords
regulating device
rotor
collar
electromagnetic regulating
conduit
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.)
Expired - Lifetime
Application number
EP02740319A
Other languages
German (de)
French (fr)
Other versions
EP1386332A1 (en
Inventor
Roland Schempp
Berthold Pfuhl
Rainer Zwickel
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.)
EKS-Elektromagnetik Dr Scheuerer KG
Robert Bosch GmbH
EKS Elektromagnetik Dr Scheuerer KG
Original Assignee
EKS-Elektromagnetik Dr Scheuerer KG
Robert Bosch GmbH
EKS Elektromagnetik Dr Scheuerer KG
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Publication date
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Publication of EP1386332A1 publication Critical patent/EP1386332A1/en
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Publication of EP1386332B1 publication Critical patent/EP1386332B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • 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
    • F15B2013/0409—Position sensing or feedback of the valve member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/126—Supporting or mounting

Definitions

  • the invention relates to an electromagnetic actuating device according to the closer defined in the preamble of claim 1. Art.
  • a proportional magnet with position measuring system known in which a housing formed as an anchor tube and sensor tube pressure tube is installed.
  • a magnetic coil and a sensor coil are installed from opposite end faces into the housing.
  • a housing surrounding the measuring system is broken to provide an electrical connection between the housing Distance measuring system and a corresponding electronics to be able to perform.
  • an electromagnetic actuator in which a pressure tube has a central thread to attach the actuator to a control valve.
  • the components of a magnetic circuit and a Wegmeßsystems be pushed onto the end of the pressure tube, which is opposite to the end at which the central thread is provided.
  • To hold these components in a fixed arrangement on the pressure tube they are fixed via a cover plate of the housing on the pressure tube in pretensioned installation position.
  • the pressure tube engages over the measuring system and a housing cover is screwed onto a provided at one end of the pressure tube thread for closing the housing.
  • the position measuring system has an electrically conductive cable for signal transmission to an electronic system of the electromagnetic setting device, which cable is guided through a slot in the pressure tube.
  • the slot of the pressure tube results in that a stability of the pressure tube is reduced and the attachment of the housing cover can lead to a deformation of the slot.
  • the electromagnetic actuator according to the invention with the features of claim 1 has the advantage that it is characterized by a particularly simple mounting on the control valve, since the pressure tube is already inserted in the magnetic production in the solenoid and the electromagnetic actuator thus in the valve assembly as a complete unit is present, which is screwed only to the control valve.
  • the holding function of the components on the pressure tube is directly taken over by the fixed to the anchor tube and this superior collar.
  • This makes it possible to design the pressure tube compared to the known from the prior art electromagnetic actuators considerably shorter and to make the area between the measuring system and the corresponding electronics so open that a slotted design of the pressure tube is not required.
  • FIG. 1 shows a simplified representation of a longitudinal section through an electromagnetic actuator 1, in which a pressure tube 2 has a frontal central thread 3, with which it is fixed in a valve housing, not shown, or the like. On the pressure tube 2, a sleeve 4 with magnetic coil 5, measuring system 6 and electronics 33 is pushed and fixed.
  • the pressure tube 2 is constructed in a pressure-tight manner in a conventional manner and consists of an anchor tube 7 and a tight and fixed in the anchor tube 7 sensor tube 8.
  • the anchor tube 7 has a pole piece 9, in addition to the central thread 3 first key surfaces 10 are arranged and to which a magnetically non-conductive first pipe part and a magnetically conductive second pipe part connects.
  • the anchor tube 7 has at its open free end a collar 13, which is used to clamp the mecanicsattelten on the pressure tube 2 components, d. H. the solenoid 5, the sleeve 4 and a housing part 14 is used.
  • the collar 13 is formed integrally with the anchor tube 7 and projects beyond this in the radial direction.
  • a spring 16, not shown is installed for tolerance compensation, via which the collar 13 presses on the housing 15.
  • the spring 16 is formed in the present embodiment as a corrugated spring, which is supported on a projection of the housing 15 and biases the saddled on the pressure tube 2 components or the items of the magnetic circuit in their installation system.
  • the anchor tube 7 receives in its interior the sensor tube 8, which is guided concentrically with an unillustrated thickened flange in the anchor tube 7 and is connected to an attachment point tightly and firmly with him.
  • a coil carrier 20 is outside slidably guided with Sensorungsmeßspulen 21 and pressed by a flange on the other supporting spring against a nut 23, which serves as an adjusting means for the sensor coils 21.
  • the sensor coils 21 have pluggable electrical connections 24, which are arranged on the outer diameter of the sensor coils 21.
  • the outer diameter of the measuring system 6 is designed such that an unillustrated mounting tool can be performed on this and attached to second key surfaces 25 of the collar 13 to tighten the electromagnetic actuator 1 to a control valve.
  • the housing of the control valve comes to an end face 26 of the sleeve 4 for concern, which ultimately takes place the tension of the saddled on the anchor tube 7 components through the collar 13.
  • the collar 13 is provided instead of the second key surfaces 25 with recesses in which a suitable tool engages, it being of course at the discretion of the skilled person, the device which corresponds to a mounting tool in another suitable Fashion way.
  • a ferrite core of the inductively operating measuring system 6 is arranged, which is mechanically in operative connection with a guided in the pressure tube 2 anchor.
  • the im Pressure tube 2 between the pole piece 9 and the thickened flange mounted armature is fixedly connected to a plunger, on the example, a valve spool of a directional control valve is actuated.
  • the pressure tube 2 has in this way, starting from the central thread 3 to the collar 13 a continuously constant outer diameter, with its pipe parts are formed from a continuously equal thick piece of pipe.
  • the pushed onto the pressure tube 2 cup-shaped sleeve 4 receives in its interior, the magnetic coil 5 and the Wegmeßsystem 6 towards open annular space of the sleeve 4 is closed by the housing part 14.
  • the sleeve 4 can be made of round material, it being of course at the discretion of the skilled person to perform the sleeve 4 as a cost-effective deep-drawn part.
  • a seal is formed between the magnet coil 5 and the housing part 14 via mutually corresponding bevels 31A, 31B, wherein the angles of the bevels 31A, 31B are provided such that in the assembled state of the actuator 1 there is a sealing line contact between the bevels 31A, 31B, which prevents leakage of casting resin from the solenoid.
  • a further housing part 32 is screwed, in which the electronics 33 is arranged.
  • the electronics 33 is arranged in easily accessible and well-protected and sealed manner on the adjusting device 1.
  • multipolar cable 34 and connectors 24 are provided for connecting the magnetic coil 5 and the sensor coils 21 to the electronics 33.
  • the mode of action of the adjusting device 1 is known per se.
  • the actual value of the position of the armature in the pressure tube 2 is always compared with the fed into the electronics 33 position-target value as long and the armature via the solenoid 5 driven accordingly until the two values match.
  • FIG. 2 shows a further embodiment of the electromagnetic setting device 1, wherein this embodiment differs from the embodiment illustrated in FIG. 1 substantially in that the collar 13 is formed integrally with the sensor tube 8.
  • the same reference numerals are used for functionally identical components as in the description of Figure 1 and it will only discuss the essential differences.
  • the sensor tube 8 is not only integral with the collar 13, but it also forms an integral structural unit with the thickened flange, which is designed as a threaded nipple 17 and an external thread 35 is screwed into the pressure tube 2.
  • the threaded nipple 17 forms as well as in Figure 1, the thickened flange at the same time a stop for the armature 30.
  • the spring 16 is provided for tolerance compensation in the axial direction of the actuating unit 1 and for prestressed installation of the saddled on the pressure tube 2 components.
  • the collar 13 with a device corresponding to an assembly tool, such as the illustrated key surfaces 2 or alternatively with recesses for the assembly tool, to facilitate the screwing of the threaded nipple 17 and the thickened flange.
  • FIG 3 the detail Z according to Figures 1 and 2 is shown in an enlarged view.
  • the pressure tube 2 is provided in the region of the magnetic coil 5 on its outer side with a recess 36, in which the magnetic coil 5 engages with a projection 37 formed on its inner side facing the pressure tube 2.
  • the recess 36 is designed as a puncture such that the formed as a plastic nipple of the solenoid projection 37 projects into it and the pressure tube 2 is maintained with the assembled magnetic coil in a transport for final assembly with a control valve as a structural unit.
  • the recess 36 is formed in the axial direction is larger or longer than the projection 37, whereby the magnetic coil 5 can be moved in the axial direction in unclamped mounting position on the pressure tube 2.
  • the federal government formed integrally with a socket is, which is at least partially disposed on the anchor tube or in the anchor tube. It is possible to firmly connect the socket via a screw with the anchor tube, wherein depending on whether the socket is arranged on or in the anchor tube, the socket has an outer or an internal thread.
  • the federal government before assembly is an independent component, whereby the production of the pressure tube and the sensor tube is simplified.
  • the adjusting device 1 is particularly suitable as a single-acting proportional solenoid in which the stroke of the armature 30 is controlled by means of the distance measuring system 6, the adjusting device 1 can also be used as a switching magnet, the position measuring system 6 is used only for position indication. Furthermore, the advantages of the adjusting device 1 can also be achieved if, instead of a single-acting design, a double-acting design, namely a double-stroke magnet, is used.

Abstract

The invention relates to an electromagnetic regulating device (1) for a hydraulic control valve, comprising a housing (14, 15, 32) which comprises an electromagnet rotor arranged in a pressure pipe (2). Additionally, a distance measuring system (6) which detects the lift of the rotor is provided. Said pressure pipe (2) comprises a central thread (3) on one end thereof for securing onto the control valve and is made of a rotor conduit (7) and a sensor pipe which is connect thereto in a tight and secure manner. Said rotor conduit (7) lifts the rotor and supports a magnetic coil (5). Said sensor pipe (8) comprises a sensor coil (21) for detecting the way. Securing means are also provided for components which are semi-mounted on the pressure pipe (2). In the area at the end of the rotor conduit (7) orientated towards the sensor pipes (7), a collar (13) for holding the components arranged on the rotor conduit is provided and is firmly secured to said rotor conduit (7), rising above said conduit.

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine elektromagnetische Stelleinrichtung nach der im Oberbegriff des Patentanspruches 1 näher definierten Art.The invention relates to an electromagnetic actuating device according to the closer defined in the preamble of claim 1. Art.

Aus der EP 0 278 227 B1 ist ein Proportionalmagnet mit Wegmeßsystem bekannt, bei dem in einem Gehäuse ein als Ankerrohr und Sensorrohr gebildetes Druckrohr eingebaut ist. Bei diesem Proportionalmagnet werden eine Magnetspule und eine Sensorspule von entgegengesetzten Stirnseiten her in das Gehäuse eingebaut. Im Bereich des Wegmeßsystems ist ein das Wegmeßsystem umgebendes Gehäuse durchgebrochen, um eine elektrische Verbindung zwischen dem Wegmeßsystem und einer damit korrespondierenden Elektronik durchführen zu können.From the EP 0 278 227 B1 is a proportional magnet with position measuring system known in which a housing formed as an anchor tube and sensor tube pressure tube is installed. In this proportional magnet, a magnetic coil and a sensor coil are installed from opposite end faces into the housing. In the area of the measuring system, a housing surrounding the measuring system is broken to provide an electrical connection between the housing Distance measuring system and a corresponding electronics to be able to perform.

Es ist auch bekannt, zum Befestigen des Proportionalmagneten an einem Steuerventil vier Längsbohrungen und zugeordnete Schrauben im Gehäuse vorzusehen.It is also known to provide four longitudinal bores and associated screws in the housing for attaching the proportional magnet to a control valve.

Nachteilig dabei ist jedoch, daß der Einsatz von Zugankern zur Verbindung der elektromagnetischen Stelleinrichtung mit einem Steuerventil teuer und fertigungstechnisch unbefriedigend ist.The disadvantage here is that the use of tie rods for connecting the electromagnetic actuator with a control valve is expensive and unsatisfactory manufacturing technology.

In der DE 197 07 587 A1 , welche als nächtstliegender Stand der Technik angesehen wird, ist eine elektromagnetische Stelleinrichtung beschrieben, bei der ein Druckrohr ein Zentralgewinde aufweist, um die Stelleinrichtung an einem Steuerventil zu befestigen. Die Bauteile eines Magnetkreises und eines Wegmeßsystems werden an dem Ende des Druckrohrs aufgeschoben, welches dem Ende gegenüberliegt, an dem das Zentralgewinde vorgesehen ist. Um diese Bauteile in einer festen Anordnung auf dem Druckrohr zu halten, werden diese über einen Abschlußdeckel des Gehäuses auf dem Druckrohr in vorgespannter Einbaulage fixiert.In the DE 197 07 587 A1 which is considered as prior art state of the art, an electromagnetic actuator is described in which a pressure tube has a central thread to attach the actuator to a control valve. The components of a magnetic circuit and a Wegmeßsystems be pushed onto the end of the pressure tube, which is opposite to the end at which the central thread is provided. To hold these components in a fixed arrangement on the pressure tube, they are fixed via a cover plate of the housing on the pressure tube in pretensioned installation position.

Das Druckrohr übergreift das Wegmeßsystem und ein Gehäusedeckel ist auf ein an einem Ende des Druckrohres vorgesehenes Gewinde zum Verschließen des Gehäuses aufgeschraubt. Das Wegmeßsystem weist zur Signalübertragung an eine Elektronik der elektromagnetischen Stelleinrichtung ein elektrisch leitendes Kabel auf, welches durch einen Schlitz des Druckrohres geführt ist. Der Schlitz des Druckrohres führt jedoch dazu, daß eine Stabilität des Druckrohres herabgesetzt ist und die Befestigung des Gehäusedeckels zu einer Verformung des Schlitzes führen kann.The pressure tube engages over the measuring system and a housing cover is screwed onto a provided at one end of the pressure tube thread for closing the housing. The position measuring system has an electrically conductive cable for signal transmission to an electronic system of the electromagnetic setting device, which cable is guided through a slot in the pressure tube. However, the slot of the pressure tube results in that a stability of the pressure tube is reduced and the attachment of the housing cover can lead to a deformation of the slot.

Weiter ist es von Nachteil, daß die beschriebene Ausführung des Druckrohres mit einem Schlitz und dem zur Befestigung des Abschlußdeckels vorgesehenen Außengewinde hohe Fertigungskosten verursacht und eine aufwendige Montage zur Folge hat.Further, it is a disadvantage that the described embodiment of the pressure tube with a slot and provided for attachment of the end cap external thread causes high production costs and has a complicated assembly result.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße elektromagnetische Stelleinrichtung mit den Merkmalen des Patentanspruches 1 hat demgegenüber den Vorteil, daß sie sich durch eine besonders einfache Montage am Steuerventil auszeichnet, da das Druckrohr bei der Magnetherstellung bereits in die Magnetspule gesteckt wird und die elektromagnetische Stelleinrichtung somit bei der Ventilmontage als komplette Einheit vorliegt, die lediglich an das Steuerventil geschraubt wird.The electromagnetic actuator according to the invention with the features of claim 1 has the advantage that it is characterized by a particularly simple mounting on the control valve, since the pressure tube is already inserted in the magnetic production in the solenoid and the electromagnetic actuator thus in the valve assembly as a complete unit is present, which is screwed only to the control valve.

Weiter ist es von Vorteil, daß die Haltefunktion der Bauteile an dem Druckrohr, insbesondere der Magnetspule, von dem mit dem Ankerrohr fest verbundenen und dieses überragenden Bund direkt übernommen wird. Damit besteht die Möglichkeit, das Druckrohr im Vergleich zu den aus dem Stand der Technik bekannten elektromagnetischen Stelleinrichtungen erheblich kürzer auszubilden und den Bereich zwischen dem Wegmeßsystem und der damit korrespondierenden Elektronik derart offen zu gestalten, daß eine geschlitzte Ausführung des Druckrohres nicht erforderlich ist. Dies führt in vorteilhafter Weise zu einer erheblichen Reduzierung der Herstellkosten und vereinfacht darüber hinaus die Montage, da ein elektronischer Anschluß der Sensorspule ohne zusätzliche fertigungstechnische Maßnahmen auf einfache Art und Weise mit der Elektronik verbunden werden kann.Further, it is advantageous that the holding function of the components on the pressure tube, in particular the magnetic coil, is directly taken over by the fixed to the anchor tube and this superior collar. This makes it possible to design the pressure tube compared to the known from the prior art electromagnetic actuators considerably shorter and to make the area between the measuring system and the corresponding electronics so open that a slotted design of the pressure tube is not required. This leads advantageously to a significant reduction in manufacturing costs and also simplifies the assembly, since an electronic connection of the sensor coil without additional Manufacturing measures can be easily connected to the electronics.

Weitere Vorteile und vorteilhafte Ausführungen des Gegenstandes nach der Erfindung sind der Beschreibung, der Zeichnung und den Patentansprüchen entnehmbar.Further advantages and advantageous embodiments of the article according to the invention are the description, the drawings and the claims removed.

Zwei Ausführungsbeispiele der Stelleinrichtung nach der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigt

  • Figur 1 einen Längsschnitt durch eine elektromagnetische Stelleinrichtung in vereinfachter Darstellung, wobei der Bund einstückig mit dem Druckrohr ausgebildet ist;
  • Figur 2 einen Längsschnitt durch eine elektromagnetische Stelleinrichtung in vereinfachter Darstellung, wobei der Bund einstückig mit dem Sensorrohr ausgebildet ist; und
  • Figur 3 eine vergrößerte Darstellung des Ausschnittes Z aus Figur 2.
Two embodiments of the adjusting device according to the invention are illustrated in the drawing and explained in more detail in the following description. It shows
  • Figure 1 shows a longitudinal section through an electromagnetic actuator in a simplified representation, wherein the collar is formed integrally with the pressure tube;
  • Figure 2 shows a longitudinal section through an electromagnetic actuator in a simplified representation, wherein the collar is formed integrally with the sensor tube; and
  • FIG. 3 shows an enlarged illustration of the detail Z from FIG. 2.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die Figur 1 zeigt in vereinfachter Darstellung einen Längsschnitt durch eine elektromagnetische Stelleinrichtung 1, bei der ein Druckrohr 2 ein stirnseitiges Zentralgewinde 3 aufweist, mit dem es in einem nicht näher dargestellten Ventilgehäuse oder dergleichen befestigt wird. Auf das Druckrohr 2 ist eine Hülse 4 mit Magnetspule 5, Wegmeßsystem 6 und Elektronik 33 aufgeschoben und befestigt.1 shows a simplified representation of a longitudinal section through an electromagnetic actuator 1, in which a pressure tube 2 has a frontal central thread 3, with which it is fixed in a valve housing, not shown, or the like. On the pressure tube 2, a sleeve 4 with magnetic coil 5, measuring system 6 and electronics 33 is pushed and fixed.

Das Druckrohr 2 ist in an sich bekannter Weise druckdicht aufgebaut und besteht aus einem Ankerrohr 7 und einem im Ankerrohr 7 dicht und fest angeordneten Sensorrohr 8. Das Ankerrohr 7 weist ein Polstück 9 auf, an dem neben dem Zentralgewinde 3 erste Schlüsselflächen 10 angeordnet sind und an den sich ein magnetisch nicht leitendes erstes Rohrteil sowie ein magnetisch leitendes zweites Rohrteil anschließt.The pressure tube 2 is constructed in a pressure-tight manner in a conventional manner and consists of an anchor tube 7 and a tight and fixed in the anchor tube 7 sensor tube 8. The anchor tube 7 has a pole piece 9, in addition to the central thread 3 first key surfaces 10 are arranged and to which a magnetically non-conductive first pipe part and a magnetically conductive second pipe part connects.

Das Ankerrohr 7 weist an seinem offenen freien Ende einen Bund 13 auf, der zum Verspannen der auf dem Druckrohr 2 aufgesattelten Bauelemente, d. h. der Magnetspule 5, der Hülse 4 und einem Gehäuseteil 14 dient. Der Bund 13 ist einstückig mit dem Ankerrohr 7 ausgebildet und überragt dieses in radialer Richtung. Zwischen dem Bund 13 und der Magnetspule 5 bzw. einem Gehäuse 15 ist eine nicht näher dargestellte Feder 16 zum Toleranzausgleich eingebaut, über welche der Bund 13 auf das Gehäuse 15 drückt. Die Feder 16 ist im vorliegenden Ausführungsbeispiel als Wellfeder ausgebildet, die sich an einem Vorsprung des Gehäuses 15 abstützt und die die auf dem Druckrohr 2 aufgesattelten Bauteile bzw. die Einzelteile des Magnetkreises in ihrer Einbauanlage vorspannt.The anchor tube 7 has at its open free end a collar 13, which is used to clamp the aufgesattelten on the pressure tube 2 components, d. H. the solenoid 5, the sleeve 4 and a housing part 14 is used. The collar 13 is formed integrally with the anchor tube 7 and projects beyond this in the radial direction. Between the collar 13 and the solenoid 5 and a housing 15, a spring 16, not shown, is installed for tolerance compensation, via which the collar 13 presses on the housing 15. The spring 16 is formed in the present embodiment as a corrugated spring, which is supported on a projection of the housing 15 and biases the saddled on the pressure tube 2 components or the items of the magnetic circuit in their installation system.

Das Ankerrohr 7 nimmt in seinem Inneren das Sensorrohr 8 auf, das mit einem nicht näher dargestellten verdickten Flansch konzentrisch im Ankerrohr 7 geführt ist und an einer Befestigungsstelle dicht und fest mit ihm verbunden ist.The anchor tube 7 receives in its interior the sensor tube 8, which is guided concentrically with an unillustrated thickened flange in the anchor tube 7 and is connected to an attachment point tightly and firmly with him.

Von dem verdickten Flansch aus ragt ein rohrförmiger Abschnitt 19 des Sensorrohres 8 mit gegenüber dem Ankerrohr 7 wesentlich kleineren Durchmesser aus dem Ankerrohr heraus. An diesem Abschnitt 19 ist außen ein Spulenträger 20 mit Sensormeßspulen 21 gleitend geführt und durch eine am Flansch sich abstützende weitere Feder gegen eine Mutter 23 gedrückt, die als Justiermittel für die Sensorspulen 21 dient.From the thickened flange protrudes a tubular portion 19 of the sensor tube 8 with respect to the anchor tube. 7 much smaller diameter out of the anchor tube out. At this section 19, a coil carrier 20 is outside slidably guided with Sensorungsmeßspulen 21 and pressed by a flange on the other supporting spring against a nut 23, which serves as an adjusting means for the sensor coils 21.

Die Sensorspulen 21 weisen steckbare elektrische Anschlüsse 24 auf, welche am äußeren Durchmesser der Sensorspulen 21 angeordnet sind. Der Außendurchmesser des Wegmeßsystems 6 ist derart ausgeführt, daß ein nicht dargestelltes Montagewerkzeug über dieses geführt und an zweiten Schlüsselflächen 25 des Bundes 13 angesetzt werden kann, um die elektromagnetische Stelleinrichtung 1 an einem Steuerventil festzuschrauben. Das Gehäuse des Steuerventiles kommt an einer Stirnfläche 26 der Hülse 4 zum Anliegen, wodurch letztendlich die Verspannung der auf dem Ankerrohr 7 aufgesattelten Bauteile durch den Bund 13 erfolgt.The sensor coils 21 have pluggable electrical connections 24, which are arranged on the outer diameter of the sensor coils 21. The outer diameter of the measuring system 6 is designed such that an unillustrated mounting tool can be performed on this and attached to second key surfaces 25 of the collar 13 to tighten the electromagnetic actuator 1 to a control valve. The housing of the control valve comes to an end face 26 of the sleeve 4 for concern, which ultimately takes place the tension of the saddled on the anchor tube 7 components through the collar 13.

Alternativ hierzu kann es vorgesehen sein, daß der Bund 13 anstatt der zweiten Schlüsselflächen 25 mit Aussparungen versehen ist, in welche ein geeignetes Werkzeug eingreift, wobei es selbstverständlich im Ermessen des Fachmannes liegt, die Einrichtung, welche mit einem Montagewerkzeug korrespondiert, in einer anderen geeigneten Art und Weise auszuführen.Alternatively, it may be provided that the collar 13 is provided instead of the second key surfaces 25 with recesses in which a suitable tool engages, it being of course at the discretion of the skilled person, the device which corresponds to a mounting tool in another suitable Fashion way.

In einer hier nicht dargestellten Sacklochbohrung des Sensorrohrs 8 ist ein Ferritkern des induktiv arbeitenden Wegmeßsystem 6 angeordnet, der mit einem in dem Druckrohr 2 geführten Anker mechanisch in Wirkverbindung steht. Der im Druckrohr 2 zwischen dem Polstück 9 und dem verdickten Flansch gelagerte Anker ist mit einem Stößel fest verbunden, über den z.B. ein Ventilschieber eines Wegeventils betätigbar ist. Das Druckrohr 2 hat auf diese Weise ausgehend vom Zentralgewinde 3 bis zum Bund 13 einen durchgehend konstanten Außendurchmesser, wobei seine Rohrteile aus einem durchgehend gleich dicken Rohrstück gebildet werden.In a blind hole, not shown here, of the sensor tube 8, a ferrite core of the inductively operating measuring system 6 is arranged, which is mechanically in operative connection with a guided in the pressure tube 2 anchor. The im Pressure tube 2 between the pole piece 9 and the thickened flange mounted armature is fixedly connected to a plunger, on the example, a valve spool of a directional control valve is actuated. The pressure tube 2 has in this way, starting from the central thread 3 to the collar 13 a continuously constant outer diameter, with its pipe parts are formed from a continuously equal thick piece of pipe.

Die auf das Druckrohr 2 aufgeschobene becherförmige Hülse 4 nimmt in ihrem Inneren die Magnetspule 5 auf und der zum Wegmeßsystem 6 hin offene Ringraum der Hülse 4 ist durch das Gehäuseteil 14 verschlossen. Die Hülse 4 läßt sich aus Rundmaterial herstellen, wobei es selbstverständlich im Ermessen des Fachmannes liegt, die Hülse 4 als ein kostengünstiges Tiefziehteil auszuführen.The pushed onto the pressure tube 2 cup-shaped sleeve 4 receives in its interior, the magnetic coil 5 and the Wegmeßsystem 6 towards open annular space of the sleeve 4 is closed by the housing part 14. The sleeve 4 can be made of round material, it being of course at the discretion of the skilled person to perform the sleeve 4 as a cost-effective deep-drawn part.

Zwischen der Magnetspule 5 und dem Gehäuseteil 14 ist eine Abdichtung über miteinander korrespondierende Schrägen 31A, 31B ausgebildet, wobei die Winkel der Schrägen 31A, 31B derart vorgesehen sind, daß im montierten Zustand der Stelleinrichtung 1 zwischen den Schrägen 31A, 31B eine dichtende Linienberührung vorliegt, die ein Ausfließen von Gießharz aus der Magnetspule verhindert.A seal is formed between the magnet coil 5 and the housing part 14 via mutually corresponding bevels 31A, 31B, wherein the angles of the bevels 31A, 31B are provided such that in the assembled state of the actuator 1 there is a sealing line contact between the bevels 31A, 31B, which prevents leakage of casting resin from the solenoid.

An dem Gehäuse 15 ist ein weiteres Gehäuseteil 32 festgeschraubt, in welchem die Elektronik 33 angeordnet ist. Die Elektronik 33 ist in leicht zugänglicher und gut geschützter sowie abgedichteter Weise an der Stelleinrichtung 1 angeordnet. Zum Anschließen der Magnetspule 5 sowie der Sensorspulen 21 an die Elektronik 33 sind teilweise nicht dargestellte mehrpolige Kabel 34 und Steckverbindungen 24 vorgesehen.On the housing 15, a further housing part 32 is screwed, in which the electronics 33 is arranged. The electronics 33 is arranged in easily accessible and well-protected and sealed manner on the adjusting device 1. For connecting the magnetic coil 5 and the sensor coils 21 to the electronics 33 are partially not shown multipolar cable 34 and connectors 24 are provided.

Die Wirkungsweise der Stelleinrichtung 1 ist an sich bekannt. Über das Wegmeßsystem 6 wird der Ist-Wert der Position des Ankers im Druckrohr 2 stets mit dem in der Elektronik 33 eingespeisten Lage-Soll-Wert so lange verglichen und der Anker über die Magnetspule 5 entsprechend angesteuert, bis die beiden Werte übereinstimmen.The mode of action of the adjusting device 1 is known per se. About the measuring system 6, the actual value of the position of the armature in the pressure tube 2 is always compared with the fed into the electronics 33 position-target value as long and the armature via the solenoid 5 driven accordingly until the two values match.

In der Figur 2 ist eine weitere Ausführungsform der elektromagnetischen Stelleinrichtung 1 dargestellt, wobei sich diese Ausführungsform von der in der Figur 1 dargestellten Ausführungsform im wesentlichen darin unterscheidet, daß der Bund 13 einstückig mit dem Sensorrohr 8 ausgebildet ist. Bei der Beschreibung der Figur 2 werden für funktionsgleiche Bauteile die gleichen Bezugszeichen wie bei der Beschreibung von der Figur 1 verwendet und es wird nur auf die wesentlichen Unterschiede eingegangen.FIG. 2 shows a further embodiment of the electromagnetic setting device 1, wherein this embodiment differs from the embodiment illustrated in FIG. 1 substantially in that the collar 13 is formed integrally with the sensor tube 8. In the description of Figure 2, the same reference numerals are used for functionally identical components as in the description of Figure 1 and it will only discuss the essential differences.

Bei der Ausführung der elektromagnetischen Stelleinrichtung 1 gemäß der Darstellung in der Figur 2 ist das Sensorrohr 8 nicht nur mit dem Bund 13 einstückig ausgeführt, sondern es bildet auch eine integrale bauliche Einheit mit dem verdickten Flansch, der als Gewindenippel 17 ausgeführt ist und über ein Außengewinde 35 in das Druckrohr 2 eingeschraubt ist. Der Gewindenippel 17 bildet genauso wie in Figur 1 der verdickte Flansch zugleich einen Anschlag für den Anker 30 aus.In the embodiment of the electromagnetic control device 1 as shown in Figure 2, the sensor tube 8 is not only integral with the collar 13, but it also forms an integral structural unit with the thickened flange, which is designed as a threaded nipple 17 and an external thread 35 is screwed into the pressure tube 2. The threaded nipple 17 forms as well as in Figure 1, the thickened flange at the same time a stop for the armature 30.

Zwischen dem Bund 13 und dem Gehäuse 15 ist die Feder 16 zum Toleranzausgleich in axialer Richtung der Stelleinheit 1 und zum vorgespannten Einbau der auf dem Druckrohr 2 aufgesattelten Bauteile vorgesehen.Between the collar 13 and the housing 15, the spring 16 is provided for tolerance compensation in the axial direction of the actuating unit 1 and for prestressed installation of the saddled on the pressure tube 2 components.

Auch in dieser Ausführungsform ist es vorgesehen, den Bund 13 mit einer mit einem Montagewerkzeug korrespondierenden Einrichtung, wie den dargestellten Schlüsselflächen 2 oder alternativ mit Aussparungen für das Montagewerkzeug, zur Erleichterung des Einschraubvorganges des Gewindenippels 17 bzw. des verdickten Flansches vorzusehen.Also in this embodiment, it is provided to provide the collar 13 with a device corresponding to an assembly tool, such as the illustrated key surfaces 2 or alternatively with recesses for the assembly tool, to facilitate the screwing of the threaded nipple 17 and the thickened flange.

In Figur 3 ist der Ausschnitt Z gemäß den Figuren 1 und 2 in vergrößerter Darstellung gezeigt. Das Druckrohr 2 ist im Bereich der Magnetspule 5 auf seiner Außenseite mit einer Aussparung 36 versehen, in welche die Magnetspule 5 mit einem an seiner dem Druckrohr 2 zugewandten Innenseite ausgebildeten Vorsprung 37 eingreift. Die Aussparung 36 ist als Einstich derart ausgeführt, daß der als Kunststoffnippel der Magnetspule ausgebildete Vorsprung 37 hinein ragt und das Druckrohr 2 mit der montierten Magnetspule bei einem Transport zur Endmontage mit einem Steuerventil als eine bauliche Einheit erhalten bleibt. Die Aussparung 36 ist in axialer Richtung größer bzw. länger als der Vorsprung 37 ausgebildet, womit die Magnetspule 5 in axialer Richtung in nicht verspannter Einbaulage auf dem Druckrohr 2 verschoben werden kann.In Figure 3, the detail Z according to Figures 1 and 2 is shown in an enlarged view. The pressure tube 2 is provided in the region of the magnetic coil 5 on its outer side with a recess 36, in which the magnetic coil 5 engages with a projection 37 formed on its inner side facing the pressure tube 2. The recess 36 is designed as a puncture such that the formed as a plastic nipple of the solenoid projection 37 projects into it and the pressure tube 2 is maintained with the assembled magnetic coil in a transport for final assembly with a control valve as a structural unit. The recess 36 is formed in the axial direction is larger or longer than the projection 37, whereby the magnetic coil 5 can be moved in the axial direction in unclamped mounting position on the pressure tube 2.

Abweichend von den beiden vorbeschriebenen Ausführungsbeispielen der elektromagnetischen Stelleinheit kann es vorgesehen sein, daß der Bund einstückig mit einer Buchse ausgebildet ist, welche wenigstens teilweise auf dem Ankerrohr oder in dem Ankerrohr angeordnet ist. Dabei besteht die Möglichkeit, die Buchse über eine Schraubverbindung mit dem Ankerrohr fest zu verbinden, wobei in Abhängigkeit davon, ob die Buchse auf oder in dem Ankerrohr angeordnet ist, die Buchse ein Außen- bzw. ein Innengewinde aufweist. Damit stellt der Bund vor der Montage ein eigenständiges Bauteil dar, wodurch die Herstellung des Druckrohres und auch des Sensorrohres vereinfacht wird.Notwithstanding the two above-described embodiments of the electromagnetic actuator, it may be provided that the federal government formed integrally with a socket is, which is at least partially disposed on the anchor tube or in the anchor tube. It is possible to firmly connect the socket via a screw with the anchor tube, wherein depending on whether the socket is arranged on or in the anchor tube, the socket has an outer or an internal thread. Thus, the federal government before assembly is an independent component, whereby the production of the pressure tube and the sensor tube is simplified.

Selbstverständlich sind an den gezeigten bzw. beschriebenen Ausführungsformen Änderungen möglich. Obwohl sich die Stelleinrichtung 1 besonders als einfach wirkender Proportionalmagnet eignet, bei dem der Hub des Ankers 30 mit Hilfe des Wegmeßsystems 6 geregelt wird, kann die Stelleinrichtung 1 auch als Schaltmagnet verwendet werden, wobei das Wegmeßsystem 6 lediglich zur Stellungsanzeige verwendet wird. Ferner lassen sich die Vorteile der Stelleinrichtung 1 auch erreichen, wenn anstelle einer einfach wirkenden Bauart eine doppelt wirkende Bauart, nämlich ein Doppelhubmagnet, verwendet wird.Of course, changes to the shown or described embodiments are possible. Although the adjusting device 1 is particularly suitable as a single-acting proportional solenoid in which the stroke of the armature 30 is controlled by means of the distance measuring system 6, the adjusting device 1 can also be used as a switching magnet, the position measuring system 6 is used only for position indication. Furthermore, the advantages of the adjusting device 1 can also be achieved if, instead of a single-acting design, a double-acting design, namely a double-stroke magnet, is used.

Claims (11)

  1. Electromagnetic regulating device (1) for a hydraulic control valve with a housing (14, 15, 32), which has a rotor of an electromagnet in a pressure pipe (2), with a distance measuring system (6) which determines the stroke of the rotor, where the pressure pipe (2) has a central thread (3) at one end to fasten it to the control valve and is comprised of a rotor conduit (7) and a sensor pipe (8), which is fixed and tightly connected to it, where the rotor conduit (7) accommodates the rotor and carries a magnet coil (5) and the sensor pipe (8) has a sensor coil (21) to determine the distance, as well as fastening means for the components straddling the pressure pipe (2); characterized in that there is a collar (13) to hold the components arranged on the rotor conduit (7) in the region of the end of the rotor conduit (7) that is turned toward the sensor pipe (8), which collar (13) is fixed to the rotor conduit (7) and extends past it.
  2. Electromagnetic regulating device according to claim 1, characterized in that the collar (13) is one piece with a bushing.
  3. Electromagnetic regulating device according to claim 2, characterized in that the bushing is at least partially arranged on the rotor conduit (7).
  4. Electromagnetic regulating device according to claim 2, characterized in that the bushing is at least partially arranged in the rotor conduit (7).
  5. Electromagnetic regulating device according to claim 1, characterized in that the collar (13) is one piece with the sensor pipe (8).
  6. Electromagnetic regulating device according to any one of claims 1 to 5, characterized in that the collar (13) has at least one device (25), which corresponds with an assembly tool in such a manner that a rotationally secured but releasable connection can be made between the collar (13) and the assembly tool for assembly.
  7. Electromagnetic regulating device according to any one of claims 1 to 6, characterized in that an outer diameter of the distance measuring system (6) is formed in such a manner that the assembly tool can be passed over the distance measuring system (6) and can be attached to the collar (13).
  8. Electromagnetic regulating device according to claim 1, characterized in that the collar (13) is formed integrally with the rotor conduit (7).
  9. Electromagnetic regulating device according to any one of claims 1 to 8, characterized in that there is a spring (16) for tolerance compensation between the side of the collar (13) turned toward the magnetic coil (5) and the housing (14, 15, 32).
  10. Electromagnetic regulating device according to any one of claims 1 to 9, characterized in that a seal between the magnetic coil (5) and the housing (14, 15, 32) is formed using inclines (31A, 31 B) corresponding to each other, whereby the angles of the inclines (31A, 31 B) are provided so that there is a line contact between inclines (31A, 31 B) in the assembled state of the regulating device (1).
  11. Electromagnetic regulating device according to claims 1 to 10, characterized in that the pressure pipe (2) has a recess (36) in the area of the magnetic coil (5) on the outer side of the pipe, into which recess (36) the magnetic coil (5) extends with a projection (37) formed on its inner side, turned toward the pressure pipe.
EP02740319A 2001-05-04 2002-05-06 Electromagnetic regulating device Expired - Lifetime EP1386332B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10121770 2001-05-04
DE10121770A DE10121770A1 (en) 2001-05-04 2001-05-04 Electromagnetic actuator
PCT/DE2002/001627 WO2002091404A1 (en) 2001-05-04 2002-05-06 Electromagnetic regulating device

Publications (2)

Publication Number Publication Date
EP1386332A1 EP1386332A1 (en) 2004-02-04
EP1386332B1 true EP1386332B1 (en) 2007-08-29

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EP02740319A Expired - Lifetime EP1386332B1 (en) 2001-05-04 2002-05-06 Electromagnetic regulating device

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US (1) US20040178377A1 (en)
EP (1) EP1386332B1 (en)
CN (1) CN1217354C (en)
AT (1) ATE371939T1 (en)
DE (2) DE10121770A1 (en)
WO (1) WO2002091404A1 (en)

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DE10328221B4 (en) * 2003-06-24 2006-06-14 Sauer-Danfoss Aps Electromagnetic valve actuator
DE102005004080A1 (en) * 2005-01-28 2006-08-03 Robert Bosch Gmbh Electromagnetic pressure control valve arrangement for hydraulic clutch, has electronic part with pressure sensor measuring hydraulic pressure applied to load connection, where sensor is placed on magnetic part end, which faces valve part
DE102006045162A1 (en) * 2006-09-25 2008-04-03 Robert Bosch Gmbh hydraulic block
US8718219B2 (en) 2007-06-14 2014-05-06 Passport Systems, Inc. Non-intrusive method to identify presence of nuclear materials using energetic prompt neutrons from photon-induced fission
DE102008008761A1 (en) * 2008-02-12 2009-08-13 Robert Bosch Gmbh actuating magnet
CN103388552B (en) * 2013-05-23 2015-12-02 国家电网公司 Hydropower Unit valve control device and controlling method thereof
DE102014113566B3 (en) * 2014-09-19 2016-02-04 Pierburg Gmbh Solenoid valve for an internal combustion engine
DE102015213206A1 (en) 2015-07-15 2017-01-19 Robert Bosch Gmbh Method and circuit arrangement for determining a position of a movable armature of an electromagnetic actuator

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US3727160A (en) * 1972-03-24 1973-04-10 Automatic Switch Co Retaining clip for a solenoid assembly
US4341241A (en) * 1980-10-20 1982-07-27 Brunswick Corporation Position indicating valve means
DE3704189A1 (en) * 1987-02-11 1988-08-25 Bosch Gmbh Robert CONTROL DEVICE FOR A HYDRAULIC, ELECTRICALLY CONTROLLABLE PROPORTIONAL VALVE
DE8813817U1 (en) * 1988-11-04 1990-03-01 Hydac Technology Gmbh, 6603 Sulzbach, De
JP3479353B2 (en) * 1994-10-17 2003-12-15 株式会社ケーヒン Exhaust gas recirculation valve
DE19655090C2 (en) * 1996-03-01 2000-04-27 Bosch Gmbh Robert Electromagnetically operated directional valve
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Also Published As

Publication number Publication date
CN1217354C (en) 2005-08-31
ATE371939T1 (en) 2007-09-15
US20040178377A1 (en) 2004-09-16
WO2002091404A1 (en) 2002-11-14
DE50210814D1 (en) 2007-10-11
EP1386332A1 (en) 2004-02-04
CN1507638A (en) 2004-06-23
DE10121770A1 (en) 2002-11-07

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