EP2131044B1 - Device for electric connection of several electropneumatic valves arranged as a valve unit - Google Patents

Device for electric connection of several electropneumatic valves arranged as a valve unit Download PDF

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Publication number
EP2131044B1
EP2131044B1 EP20090161213 EP09161213A EP2131044B1 EP 2131044 B1 EP2131044 B1 EP 2131044B1 EP 20090161213 EP20090161213 EP 20090161213 EP 09161213 A EP09161213 A EP 09161213A EP 2131044 B1 EP2131044 B1 EP 2131044B1
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EP
European Patent Office
Prior art keywords
valve
valve unit
valves
electrically conductive
conductive plastic
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EP20090161213
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German (de)
French (fr)
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EP2131044A3 (en
EP2131044A2 (en
Inventor
Theo Paulus
Klaus Bergmann
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803Modular units
    • F15B13/0846Electrical details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803Modular units
    • F15B13/0846Electrical details
    • F15B13/0857Electrical connecting means, e.g. plugs, sockets
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803Modular units
    • F15B13/0875Channels for electrical components, e.g. for cables or sensors

Description

Die vorliegende Erfindung betrifft eine Ventileinheit mit einer Einrichtung zur elektrischen Verbindung mehrerer im Rahmen der Ventileinheit aneinandergereihter elektropneumatischer Ventile mit einer zentralen Steuereinheit zur Ansteuerung der Ventile und/oder Verarbeitung von Signalen von in den Ventilen jeweils integrierten elektrischen Sensoren über elektrische Leitungsmittel.The present invention relates to a valve unit having a device for electrically connecting a plurality of electropneumatic valves lined up in the context of the valve unit with a central control unit for controlling the valves and / or processing signals of electrical sensors integrated in the valves via electrical line means.

Das Einsatzgebiet der vorliegenden Erfindung erstreckt sich auf Ventileinheiten, welche eine blockartige Zusammenfassung mehrerer aneinandergereihter pneumatischer Ventile bilden. Durch diese blockartige Aneinanderreihung wird eine effiziente Versorgung und Entsorgung mit bzw. von Druckluft erzielt und die zur elektrischen Ansteuerung erforderlichen elektrischen Leitungsmittel lassen sich über kurze Wege einfach anschließen. Über die so örtlich zusammengefassten Ventile, welche meist übliche Wegeventilfunktionen ausführen, lässt sich ein pneumatisches System mit Aktuatoren, wie Druckmittelzylindern, ansteuern.The field of application of the present invention extends to valve units, which form a block-like summary of several juxtaposed pneumatic valves. By this block-like juxtaposition an efficient supply and disposal is achieved with or from compressed air and required for electrical control electrical line means can be easily connected over short distances. About the so locally summarized valves, which usually perform common directional control valve functions, a pneumatic system with actuators, such as pressure cylinders, can be controlled.

Ventileinheiten existieren in zwei Hauptbauformen. Zum Einen ist jedem Ventil mindestens eine eigene fluidische und elektrische Anschlussplatte zugeordnet, welche die Versorgung und Entsorgung mit bzw. von Druckluft sowie den elektrischen Anschluss der Ventile, welche auf die Anschlussplatten aufgesetzt werden, übernimmt. Zum Anderen ist es auch denkbar, dass diese Funktionalität auch vom Ventilgehäuse selbst übernommen wird, welches insoweit die fluidischen Versorgungskanäle und die elektrischen Leitungsmittel zum Durchschleifen der elektrischen Verbindung von Ventil zu Ventil mit übernehmen.Valve units exist in two main types. On the one hand, at least one separate fluidic and electrical connection plate is assigned to each valve, which supply and disposal with or from compressed air and the electrical connection of the valves, which are placed on the connection plates be, takes over. On the other hand, it is also conceivable that this functionality is also taken over by the valve housing itself, which in so far take over the fluid supply channels and the electrical line means for looping through the electrical connection from valve to valve.

Aus der DE 198 40 700 A1 geht eine gattungsgemäße Ventileinheit hervor. Diese besteht im Wesentlichen aus mehreren scheibenförmigen Ventilen, die aneinandergereiht die Bauform einer Ventileinheit ergeben. Die Ventile sind miteinander befestigt. Hierdurch ergibt sich ein von Ventil zu Ventil längs durch die Ventileinheit verlaufender Speisedruckkanal sowie Entlüftungskanäle, von denen jeweils Querkanäle abzweigen, um zum Bereich der jeweiligen Ventilbohrung zu führen, in welcher ein Ventilschieber zum Schalten des Druckluftflusses zwischen den Anschlüssen vorgesehen ist. Die Anschlüsse zum Befestigen von Arbeitsleitungen befinden sich stirnseitig an jedem Ventil. Als elektrische Leitungsmittel sind hier parallel zu den längsverlaufenden Druckluftkanälen angeordnete elektrische Verkettungselemente vorgesehen. Durch diese elektrischen Verkettungselemente, welche nach dem Prinzip einer parallelen Verdrahtung aufgebaut sind, werden die Ansteuersignale an Pilotventile jedes Ventils geleitet. Zu diesem Zwecke sind abzweigende elektrische Leitungen vorgesehen.From the DE 198 40 700 A1 goes out a generic valve unit. This consists essentially of a plurality of disc-shaped valves, which line up the design of a valve unit yield. The valves are fastened together. This results in a valve running from valve to valve longitudinally through the valve unit feed pressure channel and vent channels, each of which cross channels branch to lead to the region of the respective valve bore, in which a valve spool is provided for switching the flow of compressed air between the terminals. The connections for attaching working lines are located on the front side of each valve. As electrical conduit means arranged here parallel to the longitudinal compressed air ducts electrical linking elements are provided. By means of these electrical linking elements, which are constructed on the principle of a parallel wiring, the drive signals are passed to pilot valves of each valve. For this purpose branching electrical lines are provided.

Als nachteilig bei diesem Stand der Technik erweist sich die hohe Anzahl von Einzelbauteilen. Insbesondere die elektrischen Bauteile sind im Zuge einer Montage in das Ventilgehäuse einzusetzen und dort zu befestigen. Dies erfordert wiederum einen beträchtlichen Bauraumbedarf innerhalb des Ventils.A disadvantage of this prior art, the high number of individual components proves. In particular, the electrical components are used in the course of assembly in the valve housing and fasten there. This in turn requires a considerable space requirement within the valve.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Ventileinheit mit einer Einrichtung zur elektrischen Verbindung mehrerer im Rahmen der Ventileinheit aneinandergereihter elektropneumatischer Ventile zu schaffen, welche in fertigungstechnischer einfacher Weise eine kompaktbauende und sichere elektrische Anbindung der Ventile mit einer zentralen Steuereinheit gewährleistet.It is therefore the object of the present invention to provide a valve unit with a device for the electrical connection of several juxtaposed within the valve unit electro-pneumatic valves, which ensures a compact design and safe electrical connection of the valves with a central control unit in a simple manufacturing technology.

Die Aufgabe wird ausgehend von einer Ventileinheit gemäß dem Oberbegriff von Anspruch 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Die nachfolgenden abhängigen Ansprüche geben vorteilhafte Weiterbildungen der Erfindung wieder.The object is achieved on the basis of a valve unit according to the preamble of claim 1 in conjunction with its characterizing features. The following dependent claims give advantageous developments of the invention.

Die Erfindung schließt die technische Lehre ein, dass die elektrischen Leitungsmittel als mindestens eine von Ventil zu Ventil innerhalb der Ventileinheit geschleifte elektrisch leitende Kunststoffader ausgebildet sind, welche von elektrisch nichtleitendem Gehäusekunststoff umspritzt ist, so dass sich ein einstückiges Gehäuse bildet.The invention includes the technical teaching that the electrical conduit means are formed as at least one electrically conductive plastic core looped from valve to valve within the valve unit, which is encapsulated by electrically non-conductive housing plastic, so that forms a one-piece housing.

Der Vorteil der erfindungsgemäßen Lösung liegt insbesondere darin, dass mit spritzgießtechnischer Herstellung des Gehäuses bereits die Voraussetzungen nicht allein für die interne Druckluftleitung sondern auch für die elektrische Leitung geschaffen sind. Eine Montage elektrischer Leitungsmittel innerhalb des Gehäuses erübrigt sich somit vollständig. Hierdurch wird auch eine Fehlerquelle ausgeschlossen, welche hier durch Fehlmontage und hierdurch verursachte Fehlkontaktierungen entstehen könnte.The advantage of the solution according to the invention is, in particular, that with the production of the housing by injection molding, the prerequisites have not already been created not only for the internal compressed air line but also for the electrical line. An assembly of electrical line means within the housing is thus completely unnecessary. As a result, a source of error is excluded, which could be caused by incorrect assembly and thus caused faulty contacts.

Die erfindungsgegenständlichen elektrisch leitenden Kunststoffadern lassen sich sowohl zur Spannungsversorgung der Pilotventile, und damit zu deren Ansteuerung verwenden, als auch zur Weiterleitung von Daten in Form von Sensorsignalen und dergleichen von und zum Ventil.The electrically conductive plastic cores according to the invention can be used both for supplying voltage to the pilot valves, and thus for their control, as well as for forwarding data in the form of sensor signals and the like from and to the valve.

Vorzugsweise bestehen die erfindungsgegenständlich elektrisch leitenden Kunststoffadern innerhalb des Gehäuses aus Polyamid mit Kupferfaser - und/oder Lotanteilen. Eine derartige Materialmischung lässt sich spritzgusstechnisch verarbeiten und bildet einen zuverlässigen Verbund mit dem umgebenden nicht-leitenden Gehäusekunststoff. Der Anteil an Kupferfasern und/oder Lotanteilen sorgt für die elektrische Leitfähigkeit der Kunststoffader und ist so zu bemessen, dass diese zuverlässig und verlustarm erfolgt. Anstelle von Kupfer können auch andere elektrische Leiter, wie insbesondere Aluminium oder Silber verwendet werden.Preferably, the electrically conductive plastic cores according to the invention within the housing consist of polyamide with copper fiber and / or solder components. Such a material mixture can be processed by injection molding technology and forms a reliable bond with the surrounding non-conductive housing plastic. The proportion of copper fibers and / or Lotanteilen ensures for the electrical conductivity of the plastic core and is to be dimensioned so that it is reliable and low-loss. Instead of copper, other electrical conductors, in particular aluminum or silver can be used.

Mit den erfindungsgegenständlichen elektrisch leitenden Kunststoffadern lassen sich unterschiedliche Verdrahtungskonzepte umsetzen. Zum Einen ist es möglich, dass die elektrisch leitenden Kunststoffadern eine von Ventil zu Ventil verlaufende Parallelverdrahtung bilden. Durch diese Parallelverdrahtung ist im Prinzip jedes anzuschließende Pilotventil der einzelnen Ventile über zwei Adern mit der zentralen elektrischen Steuereinheit verbunden. Dabei kann ein gemeinsamer Nullleiter verwendet werden. Alternativ hierzu ist es auch denkbar, mit den elektrisch leitenden Kunststoffadern eine von Ventil zu Ventil verlaufende serielle Busleitung für jedem Ventil zugeordnete Pilotventile zu bilden. Diese Busleitung erfordert ventilseitig allerdings ein elektronisches Dekodierelement, um die seriellen Daten in parallele Ansteuersignale für die Pilotventile umzusetzen. Andererseits wird hierdurch die Anzahl der von Ventil zu Ventil verlaufenden Kunststoffadern erheblich reduziert, da im einfachsten Fall eine zweiadrige Busleitung ausreichend ist, über welche zudem auch andere Daten, wie Sensorsignale transportiert werden können.With the electrically conductive plastic cores according to the invention, different wiring concepts can be implemented. On the one hand, it is possible for the electrically conductive plastic cores to form a parallel wiring extending from valve to valve. By virtue of this parallel wiring, in principle each pilot valve of the individual valves to be connected is connected via two wires to the central electrical control unit. In this case, a common neutral conductor can be used. Alternatively, it is also conceivable to form with the electrically conductive plastic cores extending from valve to valve serial bus line for each valve associated pilot valves. However, this bus line valve side requires an electronic decoding element to implement the serial data in parallel control signals for the pilot valves. On the other hand, this considerably reduces the number of plastic cores extending from valve to valve since, in the simplest case, a two-core bus line is sufficient, via which, in addition, other data such as sensor signals can be transported.

Die elektrisch leitenden Kunststoffadern können durch ein Gehäuse verlaufen, welches direkt das Ventilgehäuse darstellt, worin daneben auch das Schaltglied, meist Ventilschieber zum Schalten des Druckluftflusses untergebracht ist. Zum Anderen können die elektrisch leitenden Kunststoffadern auch seitens einer fluidischen und elektrischen Anschlussplatte, auf welches ein austauschbares Ventil montierbar ist, verlaufen. Diesbezüglich ist es auch denkbar, eine einzige mehreren Ventilen zugeordnete fluidische und elektrische Anschlussplatte zu verwenden.The electrically conductive plastic cores can pass through a housing which directly represents the valve housing, wherein next to the switching element, usually valve spool is housed for switching the flow of compressed air. On the other hand, the electrically conductive plastic cores can also run from a fluidic and electrical connection plate on which an exchangeable valve can be mounted. In this regard, it is also conceivable to use a single multiple valves associated fluidic and electrical connection plate.

Gemäß einer weiteren, die Erfindung verbessernden Maßnahme wird vorgeschlagen, dass zur elektrischen Kontaktierung der elektrisch leitenden Kunststoffadern benachbarter Gehäuse, die Ventilgehäuse oder Anschlussplattengehäuse sein können, durch gegeneinander zur Anlage kommende Kontaktflächen erfolgt. Diese können eine die elektrische Kontaktierung begünstigende Formgebung durch Aufwölbung nach außen oder dergleichen besitzen. Alternativ hierzu ist es jedoch auch denkbar, die Kontaktierung über zusätzliche Metallspitzen, welche in die Stirnseiten der Kunststoffadern eindringen, herzustellen. Diese sind vorzugsweise einseitig vorzumontieren, um eine kontaktsichere Endmontage zu gewährleisten.According to a further measure improving the invention, it is proposed that for electrical contacting of the electrically conductive plastic cores of adjacent housings, which may be valve housings or terminal block housings, takes place by contact surfaces coming into contact with each other. These may have a shape that promotes electrical contacting by bulging outward or the like. Alternatively, however, it is also conceivable to produce the contact via additional metal tips, which penetrate into the end faces of the plastic wires. These are preferably pre-assembled on one side to ensure a contact-secure final assembly.

In analoger Weise wird vorgeschlagen, dass zur elektrischen Kontaktierung des Pilotventils mit der zugeordneten elektrisch leitenden Kunststoffader einseitig fest am Pilotventil angebrachte und in die Kunststoffadern eindringende Metallspitzen vorgesehen sind. Kommt eine separate fluidische Anschlussplatte zur Anwendung, so sind die Metallspitzen vorzugsweise seitens des Ventils ausgebildet, so dass mit einer Befestigung des Ventils an der Anschlussplatte über die einander gegenüberliegenden Anschlussflächen, beispielsweise durch Schrauben, auch die elektrische Verbindung hergestellt wird.In an analogous manner, it is proposed that for the electrical contacting of the pilot valve with the associated electrically conductive plastic core fixedly mounted on the pilot valve and penetrating into the plastic cores metal tips are provided. If a separate fluidic connection plate is used, the metal tips are preferably formed on the part of the valve, so that with an attachment of the valve to the connection plate via the opposing connection surfaces, for example by screws, and the electrical connection is made.

Weitere, die Erfindung verbessernden Maßnahmen werden nachstehend mit der Beschreibung eines bevorzugten Ausführungsbeispiels anhand der Figuren näher dargestellt. Es zeigt:

Fig.1
eine perspektivische Ansicht einer Ventileinheit mit mehreren über jeweils zugeordnete Anschlussplatten aneinander gereihten elektropneumatischen Ventilen, und
Fig.2
eine schematische Darstellung der elektrischen Verbindung zwischen benachbarten Anschlussplatten.
Further measures which improve the invention are described in more detail below with the description of a preferred embodiment with reference to the figures. It shows:
Fig.1
a perspective view of a valve unit with several juxtaposed via each associated terminal plates juxtaposed electropneumatic valves, and
Fig.2
a schematic representation of the electrical connection between adjacent connection plates.

Gemäß Fig.1 besteht die hier dargestellte pneumatische Ventileinheit 1 aus mehreren aneinandergereihten elektropneumatischen Ventilen 2a-2e. Die Ansteuerung der elektropneumatischen Ventile 2a-2e, welche je mit einem Pilotventil 3a-3e bestückt sind, erfolgt über eine bezüglich der Ventileinheit 1 zentrale Steuereinheit 4. Zwischen der zentralen Steuereinheit 4 und den Pilotenventilen 3a und 3e der elektropneumatischen Ventile 2a-2e sind von Ventil zu Ventil entsprechende elektrische Leitungsmittel - welche an späterer Stelle eingehender erläutert werden - geführt.According to Fig.1 the pneumatic valve unit 1 shown here consists of several juxtaposed electropneumatic valves 2a-2e. The control of the electropneumatic valves 2a-2e, which are each equipped with a pilot valve 3a-3e, via a valve unit 1 with respect to the central control unit 4. Between the central control unit 4 and the pilot valves 3a and 3e of the electropneumatic valves 2a-2e are of Valve to valve corresponding electrical conduit means - which will be explained in more detail later - out.

Die Versorgung der einzelnen Ventile 2a-2e mit Druckluft sowie auch die Entsorgung verbrauchter Druckluft erfolgt in diesem Ausführungsbeispiel über eine jedem Ventil 2a-2e zugeordnete separate Anschlussplatte 5 (exemplarisch). Über längsverlaufende Druckluftkanäle P zur Speisedruckversorgung sowie R und S zur Entlüftung wird die Ankopplung durch hiervon abzweigende Querkanäle zu den Ventilen 2a-2e hin durchgeführt. An jedem Ventil 2a-2e sind außerdem zwei Arbeitsanschlüsse A und B stirnseitig angeordnet. Über die Arbeitsanschlüsse A und B können - nicht weiter dargestellte - Druckmittelleitungen angeschlossen werden, um Aktuatoren, wie Druckmittelzylinder, mit Arbeitsdruck zu versorgen. Der Druckluftfluss zwischen den Anschlüssen wird hier durch einen innerhalb jedes Ventils 2a-2e angeordneten Ventilschieber gesteuert. Der Ventilschieber wird nach Maßgabe einer Vorsteuerung über die Pilotventile 3a-3e mit Steuerdruck versorgt. Das Schaltverhalten des Ventils 2a-2e lässt sich über einen ebenfalls hierin integrierten Drucksensor 6 ermitteln und elektrisch an die Steuereinheit 4 rückmelden.The supply of the individual valves 2a-2e with compressed air as well as the disposal of used compressed air takes place in this embodiment via a separate connection plate 5 assigned to each valve 2a-2e (by way of example). About longitudinally extending compressed air channels P for feed pressure supply and R and S for venting the coupling is carried out by thereof branching transverse channels to the valves 2a-2e out. At each valve 2a-2e also two working ports A and B are arranged frontally. About the working ports A and B can - not shown - pressure medium lines are connected to supply actuators, such as pressure cylinder, with working pressure. The flow of compressed air between the ports is here controlled by a valve spool located within each valve 2a-2e. The valve spool is supplied with control pressure in accordance with pilot control via the pilot valves 3a-3e. The switching behavior of the valve 2a-2e can be determined via a pressure sensor 6, which is likewise integrated therein, and can be fed back to the control unit 4 electrically.

Die elektrischen Leitungsmittel sind erfindungsgemäß als zwei zueinander parallel verlaufende und von Ventil zu Ventil innerhalb der Ventileinheit 1 geschleifte elektrisch leitende Kunststoffader 7 ausgeführt. Die elektrisch leitende Kunststoffader 7 besteht aus Polyamid mit Kupferfaser- und Lotanteilen. Die elektrisch leitende Kunststoffader 7 bildet hier eine von Ventil zu Ventil verlaufende zweiadrige serielle Busleitung, welche elektrisch mit jedem Pilotventil 3a-3e in Verbindung steht. Seitens der Pilotventile 3a-3e sind jeweils Dekodierchips zum Umwandeln der seriellen Ansteuersignale in parallele Signale zur Betätigung der hierin integrierten Magnetventile vorgesehen. Über die elektrisch leitende, durchgeschleifte Kunststoffader 7 erfolgt gleichzeitig auch die Stromversorgung der Magnetspulen der Pilotventile 3a-3e. Die elektrisch leitende Kunststoffader 7 ist von einem diesen umgebenden elektrisch nicht-leitfähigen Gehäusekunststoff umspritzt, welcher in diesem Ausführungsbeispiel ein einstückiges Gehäuse 8 der einzelnen fluidischen und elektrischen Anschlussplatten 5 bildet. Die elektrisch leitenden Kunststoffadern 7 innerhalb des Gehäuses 8 dienen neben der Stromversorgung der angeschlossenen Pilotventile 3a und 3e auch einem bidirektionalen Datenaustausch mit der Steuereinheit 4 und leiten insoweit auch die Signale des Drucksensors 6 an die Steuereinheit 4 zur Auswertung weiter.The electrical conduit means according to the invention as two mutually parallel and looped from valve to valve within the valve unit 1 electrically conductive plastic core 7 executed. The electrically conductive plastic core 7 consists of polyamide with copper fiber and Lotanteilen. The electrically conductive plastic core 7 forms here from one valve to valve two-wire serial bus line electrically connected to each pilot valve 3a-3e. The pilot valves 3a-3e respectively provide decoding chips for converting the serial drive signals into parallel signals for actuating the solenoid valves integrated therein. At the same time, the power supply of the magnetic coils of the pilot valves 3a-3e takes place via the electrically conductive, looped-through plastic core 7. The electrically conductive plastic core 7 is encapsulated by a surrounding this non-electrically conductive housing plastic, which forms a one-piece housing 8 of the individual fluidic and electrical connection plates 5 in this embodiment. The electrically conductive plastic cores 7 within the housing 8 serve in addition to the power supply of the connected pilot valves 3a and 3e also a bidirectional data exchange with the control unit 4 and to that extent also forward the signals of the pressure sensor 6 to the control unit 4 for evaluation.

Gemäß Fig.2 erfolgt die Kontaktierung der verschiedenen Abschnitte von elektrisch leitenden Kunststoffadern 7 innerhalb der aneinandergereihten Anschlussplatten 5 durch stirnseitig gegeneinander zur Anlage kommende Kontaktflächen 9a und 9b. Zur elektrischen Kontaktierung des Pilotventils 3b mit dem zugeordneten Abschnitt der elektrisch leitenden Kunststoffader 7 ist dagegen eine ortsfest am Pilotventil 3b (exemplarisch) angebrachte eindringende Metallspitze 10 vorgesehen, welche bei der Montage des Pilotventils neben der elektrischen Kontaktierung auch eine mechanische Befestigung am Gehäuse 8b der Anschlussplatte 5 herstellt.According to Fig.2 the contacting of the various sections of electrically conductive plastic cores 7 takes place within the juxtaposed connection plates 5 by contact surfaces 9a and 9b coming into abutment against one another at the front side. For electrical contacting of the pilot valve 3b with the associated portion of the electrically conductive plastic core 7, however, a stationary on the pilot valve 3b (exemplary) attached penetrating metal tip 10 is provided which in the assembly of the pilot valve in addition to the electrical contacting and a mechanical attachment to the housing 8b of the connection plate 5 produces.

Die Erfindung ist nicht beschränkt auf das vorstehend beschriebene bevorzugte Ausführungsbeispiel. Es sind vielmehr auch Abwandlungen hiervon denkbar, welche vom Schutzbereich der nachfolgenden Ansprüche mit umfasst sind. So ist es beispielsweise auch möglich, mit den erfindungsgemäßen elektrisch leitfähigen Kunststoffadern 7, welche vom elektrisch nicht-leitenden Gehäusekunststoff umspritzt sind, eine Parallelverdrahtung auszuführen, so dass jedes einzelne Ventil 2a-2e durch ein Leitungspaar mit der Steuereinheit 4 verbunden ist. Hierbei kann ein gemeinsamer Nullleiter genutzt werden. Ebenso ist es auch möglich, die erfindungsgemäßen elektrisch leitenden Kunststoffadern 7 unter Verzicht auf separate fluidische und elektrische Anschlussplatten 5 direkt in das Gehäuse der Ventile 2a-2e zu integrieren, welche zur Zusammenfassung im Rahmen einer Ventileinheit insoweit die elektrischen und fluidischen Versorgungsfunktionen mit erfüllen.The invention is not limited to the preferred embodiment described above. On the contrary, modifications are conceivable which are included in the scope of protection of the following claims. Thus, for example, it is also possible to carry out parallel wiring with the electrically conductive plastic wires 7 according to the invention, which are encapsulated by the electrically non-conductive housing plastic, so that each individual valve 2a-2e is connected to the control unit 4 by a line pair. This can be a common neutral can be used. Likewise, it is also possible to integrate the inventive electrically conductive plastic wires 7, dispensing with separate fluidic and electrical connection plates 5 directly in the housing of the valves 2a-2e, which meet to summarize in the context of a valve unit insofar the electrical and fluidic supply functions.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Ventileinheitvalve unit
22
VentilValve
33
Pilotventilpilot valve
44
Steuereinheitcontrol unit
55
Anschlussplatteconnecting plate
66
Sensorsensor
77
KunststoffaderPlastic wire
88th
Gehäusecasing
99
Kontaktflächecontact area
1010
Metallspitzemetal tip

Claims (10)

  1. A valve unit for electrical connection of at least two electro-pneumatic valves (2a-2e), which are arranged in series within said valve unit (1), comprising a central control unit (4) for controlling the valves (2a-2e) and/or for processing of signals generated by electric sensors (6), each integrated in the valves (2a-2e) by means of electric transmission means, characterized in that the electric transmission means are embodied as one or more , electrically conductive plastic sheathed cables, which are drawn from one valve to the next within the valve unit (1), which is overmolded with electrically non-conductive plastic housing material such that a one-part housing (8) is obtained.
  2. A valve unit according to claim 1,
    characterized in that the electrically conductive plastic sheathed cable (7) consists of polyamide with a certain percentage of copper fibre content and/or lead content.
  3. A valve unit according to claim 1,
    characterized in that the electrically conductive sheathed cables (7) are arranged to form a parallel wiring running from one valve (2a-2e) to the next, starting at pilot valves (3a-3e) which are allocated to each valve.
  4. A valve unit according to claim 1,
    characterized in that the electrically conductive plastic sheathed cables (7) are arranged to form a serial bus connection running from one valve (2a-2e) to the next, starting at pilot valves (3a-3e) which are allocated to each valve.
  5. A valve unit according to claim 1,
    characterized in that the one-piece housing (8) is allocated to a fluidic and electric connection plate (5).
  6. A valve unit according to claim 1,
    characterized in that the one-piece housing (8) is directly allocated to the valves (2a-2e).
  7. A valve unit according to any one of the preceding claims,
    characterized in that the electrically conductive plastic sheathed cables (7) of the housing (8) are arranged to supply the pilot valves (3a-3e) with electric power and, further, to enable a mono- or bidirectional data exchange with the central control unit (4).
  8. A valve unit according to any one of the preceding claims,
    characterized in that metal spikes (10), which pierce into the electrically conductive plastic sheathed cable, or contact areas, which come to bear upon one another, are provided to electrically contact the electrically conductive plastic sheathed cables (7) of adjacent housings (8).
  9. A valve unit according to any one of the preceding claims,
    characterized in that metal spikes (10) which are arranged locally fixed at the pilot valve (3a-3e) and pierce into the plastic sheathed cable (7) are provided to electrically contact the pilot valve (3a-3e) with the electrically conductive plastic sheathed cables (7) correspondingly allocated.
  10. A valve unit (1) according to any one of the preceding claims,
    comprising at least two serially arranged and fluidically coupled valves (2a-2e).
EP20090161213 2008-06-04 2009-05-27 Device for electric connection of several electropneumatic valves arranged as a valve unit Active EP2131044B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810026681 DE102008026681B3 (en) 2008-06-04 2008-06-04 Device for the electrical connection of several arranged as a valve unit electropneumatic valves

Publications (3)

Publication Number Publication Date
EP2131044A2 EP2131044A2 (en) 2009-12-09
EP2131044A3 EP2131044A3 (en) 2011-09-28
EP2131044B1 true EP2131044B1 (en) 2013-04-17

Family

ID=41055233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090161213 Active EP2131044B1 (en) 2008-06-04 2009-05-27 Device for electric connection of several electropneumatic valves arranged as a valve unit

Country Status (2)

Country Link
EP (1) EP2131044B1 (en)
DE (1) DE102008026681B3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010023319B4 (en) 2009-07-20 2023-03-02 Aventics Gmbh Connection plate for actuators
DE102010052481B4 (en) * 2010-11-26 2023-07-06 Hitachi Energy Switzerland Ag high voltage switching device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402735A1 (en) * 1994-01-29 1995-08-03 Teves Gmbh Alfred Electro-hydraulic pressure control device
US5909012A (en) * 1996-10-21 1999-06-01 Ford Motor Company Method of making a three-dimensional part with buried conductors
DE19704152C2 (en) * 1997-02-04 1998-11-05 Siemens Ag Control device for an anti-lock braking system
DE19722925C1 (en) * 1997-05-27 1998-09-10 Mannesmann Ag Electrical connecting element for valve unit electromagnets
EP0947408A3 (en) * 1998-03-30 2000-04-12 Siemens Aktiengesellschaft Control device for hydraulic brake control and its manufacturing method
DE19840700C2 (en) * 1998-08-21 2003-08-14 Rexroth Mecman Gmbh valve unit
DE19848039A1 (en) * 1998-10-17 2000-04-20 Bosch Gmbh Robert Arrangement for contacting component with electrical connection has electric circuit slotted connector with which electric circuit is plugged onto electrical connector on component

Also Published As

Publication number Publication date
DE102008026681B3 (en) 2010-01-07
EP2131044A3 (en) 2011-09-28
EP2131044A2 (en) 2009-12-09

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