EP0708458B1 - Switching device with contact - Google Patents

Switching device with contact Download PDF

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Publication number
EP0708458B1
EP0708458B1 EP95111951A EP95111951A EP0708458B1 EP 0708458 B1 EP0708458 B1 EP 0708458B1 EP 95111951 A EP95111951 A EP 95111951A EP 95111951 A EP95111951 A EP 95111951A EP 0708458 B1 EP0708458 B1 EP 0708458B1
Authority
EP
European Patent Office
Prior art keywords
pole tube
switching device
housing
switching
connection
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
EP95111951A
Other languages
German (de)
French (fr)
Other versions
EP0708458A1 (en
Inventor
Heinz Jacobus
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.)
BSO Steuerungstechnik GmbH
Original Assignee
BSO Steuerungstechnik 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 BSO Steuerungstechnik GmbH filed Critical BSO Steuerungstechnik GmbH
Publication of EP0708458A1 publication Critical patent/EP0708458A1/en
Application granted granted Critical
Publication of EP0708458B1 publication Critical patent/EP0708458B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a switching device for actuating Valves, with electrically mass-leading parts, such as a housing and a therein arranged bobbin, in which a pole tube with switching part and which is provided with a winding of a conductor by means of a connection device can be connected to a power source.
  • Such switching devices are known and freely available on the market. If the conductor winding of the switching device with a current or Connected to the voltage source, the excitation of the coil turns the switching part, this is also referred to as a magnet armature and can be moved longitudinally in the pole tube is arranged, operated and against the force of a spring accumulator or the like. a valve is opened, mostly when switching off the power supply the influence of this energy accumulator, the switching part in its unactuated rest position moved back.
  • the connection device has in the known Switching devices on two connecting pins that are comparable in function a plug for establishing the power connection in a power supply system are insertable.
  • the object of the invention based on improving this known switching device so that for a Operator any danger when handling the switching device due to an electric shock.
  • This Security also includes a possible replacement process in which the pole tube with the switching part remains with the valve device and the housing with the bobbin and the connecting device from the pole tube by hand Will get removed.
  • the contacting has a roll pin, which in a Hole can be used on the rear wall of the housing and with a Overhang in the for guiding the pole tube within the device provided recording space protrudes. Due to the internal tension of the dowel pin this ensures secure contacting that goes beyond that is inexpensive to manufacture.
  • the switching device is explained in more detail below with reference to the drawing.
  • the switching device has a housing 10 made of a metallic, electrically conductive material.
  • a coil former 12 arranged, in turn in the usual and therefore not shown as well as described a pole tube with switching part is.
  • the coil former 12 is provided with a conductor winding 14, the Conductor of the winding by means of a connection device 16 to a power source (not shown) can be connected.
  • the connection device points for the connected to a power source, two contacts in the form of Connection pin 18 on.
  • the switching device can end and to the recording room 20 facing sealant for the pole tube, for example in the form of an O-ring 22.
  • at least the conductor winding 14 be cast or extrusion-coated with a plastic compound 24.
  • the contact shows one Roll pin 28 as shown in Figures 5 and 6, in the kind of a ferrule is formed.
  • Existing metal dowel pin 28 can be a standard part, according to the DIN standard 7346 and have ends 30 chamfered at an angle of 30 °.
  • the roll pin 28 is hollow-cylindrical and has a longitudinal slot 32 Mistake.
  • the dowel pin 28 can be made using suitable and known handling tools along its adjacent, delimiting the longitudinal slot 32 Press the edges together and into a longitudinal hole provided for this purpose Insert 34 in the rear wall 36.
  • the spring pin 28 is then fixed under the internal stress of the spring steel to the bore wall and stands with a certain protrusion in the for the receiving tube 20 provided the pole tube.
  • This supernatant can be best seen in Fig.5.
  • the longitudinal slot 32 is in the inserted state of the dowel pin 28 arranged facing downwards and with in FIG a double arrow angle between the longitudinal axis of the longitudinal slot 32 and the vertical through the center of the dowel pin 28 is approx. 45 °.
  • the supernatant is preferably selected on the one hand in such a way that always secure contact between housing 10 and pole tube (not shown) is manufactured; on the other hand, the retraction of the pole tube in the receiving space 20 is not difficult.
  • the mentioned longitudinal bore 34 is so arranged in the rear wall 36 that the receiving space 20 there remains an opening which is circumferential of the dowel pin 28 can be closed with its overhang. If the longitudinal slot 32 with the points addressed angle in the direction of the receiving space 20, can under the influence of the pole tube to be inserted, the two free ends of the Dowel pin 28, which limit the longitudinal slot 32, relatively easily against each other move, but at all times secure contact with the pole tube is reached.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Push-Button Switches (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Breakers (AREA)

Description

Die Erfindung betrifft eine Schaltvorrichtung zum Betätigen von Ventilen, mit elektrisch masseführenden Teilen, wie einem Gehäuse und einem darin angeordneten Spulenkörper, in dem ein Polrohr mit Schaltteil geführt und der mit einer Wicklung eines Leiters versehen ist, der mittels einer Anschlußeinrichtung an eine Stromquelle anschließbar ist.The invention relates to a switching device for actuating Valves, with electrically mass-leading parts, such as a housing and a therein arranged bobbin, in which a pole tube with switching part and which is provided with a winding of a conductor by means of a connection device can be connected to a power source.

Dahingehende Schaltvorrichtungen sind bekannt und auf dem Markt frei erhältlich. Wird die Leiterwicklung der Schaltvorrichtung mit einer Strom- oder Spannungsquelle verbunden, wird mit der Erregung der Spule das Schaltteil, das auch mit Magnetanker bezeichnet und in dem Polrohr längsverfahrbar angeordnet ist, betätigt und hierbei entgegen der Kraft eines Federspeichers od.dgl. ein Ventil geöffnet, wobei mit Abschalten der Stromzufuhr meist unter dem Einfluß dieses Kraftspeichers das Schaltteil in seine unbetätigte Ruhestellung zurückverfährt. Die Anschlußeinrichtung weist bei den bekannten Schaltvorrichtungen zwei Anschlußzapfen auf, die vergleichbar der Funktion eines Steckers zum Herstellen der Stromverbindung in ein Stromversorgungssystem einsteckbar sind. Im Rahmen von Wartungsarbeiten oder bei einem sonstigen Austausch der Schaltvorrichtung ist es möglich, daß das Polrohr mit Schaltteil bei der zu betätigenden Ventileinrichtung verbleibt und die Anschlußeinrichtung zusammen mit dem Gehäuse und dem Spulenkörper von dem Polrohr abgezogen wird, wobei es zu einer Unterbrechung der hergestellten Verbindung mit der Stromquelle kommt. Bei Schaltungsdefekten, aber auch bei Störungen oder Fehlern innerhalb der Schaltvorrichtung, kann nicht ausgeschlossen werden, daß es bei einer dahingehenden Trennung, zumindest kurzfristig, dazu kommt, daß der Bedienperson zugängliche Teile der Schaltvorrichtung, beispielsweise in Form ihres Außengehäuses, unter Strom gesetzt sind, was eine erhebliche Gefahr für die Bedienperson darstellt.Such switching devices are known and freely available on the market. If the conductor winding of the switching device with a current or Connected to the voltage source, the excitation of the coil turns the switching part, this is also referred to as a magnet armature and can be moved longitudinally in the pole tube is arranged, operated and against the force of a spring accumulator or the like. a valve is opened, mostly when switching off the power supply the influence of this energy accumulator, the switching part in its unactuated rest position moved back. The connection device has in the known Switching devices on two connecting pins that are comparable in function a plug for establishing the power connection in a power supply system are insertable. As part of maintenance work or at a other exchange of the switching device, it is possible that the pole tube with Switching part remains in the valve device to be actuated and the connection device together with the housing and the bobbin from the The pole tube is withdrawn, causing an interruption in the manufactured Connection to the power source comes. With circuit defects, but also with Faults or errors within the switching device cannot be ruled out be that with such a separation, at least in the short term, in addition there are parts of the switching device accessible to the operator, for example in the form of its outer casing, energized are, which represents a significant danger to the operator.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, diese bekannte Schaltvorrichtung derart zu verbessern, daß für eine Bedienperson bei der Handhabung der Schaltvorrichtung jegliche Gefahr bedingt durch einen Stromschlag ausgeschlossen ist.Starting from this prior art, the object of the invention based on improving this known switching device so that for a Operator any danger when handling the switching device due to an electric shock.

Eine dahingehende Aufgabe löst eine Schaltvorrichtung mit den Merkmalen des Anspruches 1. Dadurch, daß gemäß dem kennzeichnenden Teil des Anspruches 1 das Polrohr über eine Kontaktierung mit den masseführenden Teilen der Vorrichtung zumindest bis zu einer Trennung der Anschlußeinrichtung von der Stromquelle leitend verbunden ist, ist eine sichere Masseverbindung von dem Gehäuse zu dem Polrohr erreicht, so daß auch bei Auftreten von Störungen oder einem Versagen der Schaltvorrichtung die Gefahr für die Bedienperson, einen elektrischen Schlag zu erhalten, mit Sicherheit vermieden ist. Diese Sicherheit schließt auch einen etwaigen Auswechselvorgang mit ein, bei dem das Polrohr mit Schaltteil bei der Ventileinrichtung verbleibt und das Gehäuse mit dem Spulenkörper und der Anschlußeinrichtung vom Polrohr von Hand entfernt wird.A switching device with the features of Claim 1. Characterized in that according to the characterizing part of the claim 1 the pole tube via a contact with the mass-carrying parts of the Device at least up to a separation of the connection device from the Power source is conductively connected, is a safe ground connection from the Housing reached to the pole tube, so that even when malfunctions occur or a failure of the switching device, the danger to the operator, getting an electric shock is definitely avoided. This Security also includes a possible replacement process in which the pole tube with the switching part remains with the valve device and the housing with the bobbin and the connecting device from the pole tube by hand Will get removed.

Bei der erfindungsgemäßen Schaltvorrichtung ist die Kontaktierung an dem der Anschlußeinrichtung entgegengesetzten Ende der Vorrichtung angeordnet und die Masseverbindung besteht zwischen dem Polrohr und dem Gehäuse als masseführendem Teil. Hierdurch bleibt das Polrohr über die Kontaktierung mit Sicherheit masseführend mit dem Gehäuse verbunden, bis eine sichere Trennung der Anschlußeinrichtung von der Stromquelle erfolgt ist.In the switching device according to the invention is the contact on the opposite of the connection device Arranged end of the device and the ground connection exists between the pole tube and the housing as a mass-leading part. This will keep it Pole tube certainly leads to the housing via the contact connected until a safe disconnection of the connection device from the power source is done.

Bei einer weiteren bevorzugten Ausführungsform der erfindungsgemäßen Schaltvorrichtung weist die Kontaktierung einen Spannstift auf, der in eine Bohrung an der Rückwand des Gehäuses einsetzbar ist und der mit einem Überstand in den für die Führung des Polrohres innerhalb der Vorrichtung vorgesehenen Aufnahmeraum ragt. Aufgrund der Eigenspannung des Spannstiftes gewährleistet dieser eine sichere Kontaktierung, die darüber hinaus kostengünstig herstellbar ist.In a further preferred embodiment of the invention Switching device, the contacting has a roll pin, which in a Hole can be used on the rear wall of the housing and with a Overhang in the for guiding the pole tube within the device provided recording space protrudes. Due to the internal tension of the dowel pin this ensures secure contacting that goes beyond that is inexpensive to manufacture.

Im folgenden wird die Schaltvorrichtung anhand der Zeichnung näher erläutert.The switching device is explained in more detail below with reference to the drawing.

Es zeigen:

Fig.1
teilweise in Ansicht, teilweise im Längsschnitt die Schaltvorrichtung ohne Polrohr und ohne Schaltteil;
Fig.2
eine Draufsicht auf die Schaltvorrichtung nach der Fig.1;
Fig.3
im Längsschnitt das in der Schaltvorrichtung verwendete Gehäuse;
Fig.4
eine Stirnansicht auf das Gehäuse nach der Fig.3;
Fig.5
eine vergrößerte Darstellung des mit Strichen umrandeten, kreisförmigen Bildausschnittes in Fig.4;
Fig.6
eine Seitenansicht auf einen Spannstift, der Teil der Kontaktierung ist.
Show it:
Fig. 1
partly in view, partly in longitudinal section, the switching device without pole tube and without switching part;
Fig. 2
a plan view of the switching device according to Figure 1;
Fig. 3
in longitudinal section the housing used in the switching device;
Fig. 4
an end view of the housing of Figure 3;
Fig. 5
an enlarged view of the circular image section surrounded by lines in Figure 4;
Fig. 6
a side view of a roll pin, which is part of the contact.

Die Schaltvorrichtung nach der Fig.1 weist ein Gehäuse 10 aus einem metallischen, elektrisch leitenden Material auf. In dem Gehäuse 10 ist ein Spulenkörper 12 angeordnet, in dem wiederum in üblicher und daher nicht näher dargestellter sowie beschriebenen Art und Weise ein Polrohr mit Schaltteil geführt ist. Der Spulenkörper 12 ist mit einer Leiterwicklung 14 versehen, wobei der Leiter der Wicklung mittels einer Anschlußeinrichtung 16 an eine Stromquelle (nicht dargestellt) anschließbar ist. Die Anschlußeinrichtung weist für den dahingehenden Anschluß an eine Stromquelle, zwei Kontakte in Form von Anschlußzapfen 18 auf. Die Schaltvorrichtung kann endseitig und zum Aufnahmeraum 20 für das Polrohr zugewandt Dichtmittel, beispielsweise in Form eines O-Ringes 22, aufweisen. Ferner kann zumindest die Leiterwicklung 14 mit einer Kunststoffmasse 24 umgossen oder umspritzt sein. Der dahingehend beschriebene Aufbau einer Schaltvorrichtung ist bekannt und wird demgemäß an dieser Stelle nicht mehr näher erläutert.The switching device according to Figure 1 has a housing 10 made of a metallic, electrically conductive material. In the housing 10 is a coil former 12 arranged, in turn in the usual and therefore not shown as well as described a pole tube with switching part is. The coil former 12 is provided with a conductor winding 14, the Conductor of the winding by means of a connection device 16 to a power source (not shown) can be connected. The connection device points for the connected to a power source, two contacts in the form of Connection pin 18 on. The switching device can end and to the recording room 20 facing sealant for the pole tube, for example in the form of an O-ring 22. Furthermore, at least the conductor winding 14 be cast or extrusion-coated with a plastic compound 24. The matter Structure of a switching device described is known and is accordingly not explained in more detail here.

Damit das Polrohr (nicht dargestellt) über eine Kontaktierung mit den masseführenden Teilen der Schaltvorrichtung zumindest bis zur Trennung der Anschlußeinrichtung 16 von der Stromquelle (nicht dargestellt) leitend verbunden ist, ist die Kontaktierung an dem der Anschlußeinrichtung 16 entgegengesetzten Ende 26 (Fig.3) der Schaltvorrichtung angeordnet. Die Kontaktierung weist einen Spannstift 28 gemäß den Darstellungen nach den Fig.5 und 6 auf, der in der Art einer Klemmhülse ausgebildet ist. Der beispielsweise aus einem Federstahl bestehende metallische Spannstift 28 kann ein Normteil sein, nach der DIN-Norm 7346 und um einen Winkel von 30° angephaste Enden 30 aufweisen. Der Spannstift 28 ist hohlzylindrisch ausgebildet und mit einem Längsschlitz 32 versehen. Der Spannstift 28 läßt sich über geeignete und bekannte Handhabungs-Werkzeuge entlang seiner benachbarten, den Längsschlitz 32 begrenzenden Ränder zusammendrücken und in eine hierfür vorgesehene Längsbohrung 34 in der Gehäuserückwand 36 einsetzen.So that the pole tube (not shown) via a contact with the mass-leading Parts of the switching device at least until the connection device is disconnected 16 is conductively connected from the power source (not shown) the contacting at the end opposite the connecting device 16 26 (Fig.3) of the switching device. The contact shows one Roll pin 28 as shown in Figures 5 and 6, in the Kind of a ferrule is formed. For example, from a spring steel Existing metal dowel pin 28 can be a standard part, according to the DIN standard 7346 and have ends 30 chamfered at an angle of 30 °. The roll pin 28 is hollow-cylindrical and has a longitudinal slot 32 Mistake. The dowel pin 28 can be made using suitable and known handling tools along its adjacent, delimiting the longitudinal slot 32 Press the edges together and into a longitudinal hole provided for this purpose Insert 34 in the rear wall 36.

Unter der Eigenspannung des Federstahls legt sich dann der Spannstift 28 fest an die Bohrungswand an und steht mit einem gewissen Überstand in den für das Polrohr vorgesehenen Aufnahmeraum 20 vor. Dieser Überstand läßt sich am besten in der Fig.5 ersehen. Der Längsschlitz 32 ist im eingesetzten Zustand des Spannstiftes 28 nach unten weisend angeordnet und der in der Fig.5 mit einem Doppelpfeil dargestellte Winkel zwischen der Längsachse des Längsschlitzes 32 und der Vertikalen durch den Mittelpunkt des Spannstiftes 28 beträgt ca. 45°. Der Überstand ist vorzugsweise zum einen derart gewählt, daß immer eine sichere Kontaktierung zwischen Gehäuse 10 und Polrohr (nicht dargestellt) hergestellt ist; zum anderen jedoch das Einfahren des Polrohres in den Aufnahmeraum 20 nicht erschwert ist. Die angesprochene Längsbohrung 34 ist also derart in der Gehäuserückwand 36 angeordnet, daß zum Aufnahmeraum 20 hin eine Öffnung verbleibt, die umfangsseitig von dem Spannstift 28 mit seinem Überstand verschließbar ist. Sofern der Längsschlitz 32 mit dem angesprochenen Winkel in Richtung des Aufnahmeraumes 20 weist, lassen sich unter dem Einfluß des einzuschiebenden Polrohres die beiden freien Enden des Spannstiftes 28, die den Längsschlitz 32 begrenzen, relativ leicht gegeneinander bewegen, wobei dennoch zu jedem Zeitpunkt eine sichere Kontaktierung mit dem Polrohr erreicht ist.The spring pin 28 is then fixed under the internal stress of the spring steel to the bore wall and stands with a certain protrusion in the for the receiving tube 20 provided the pole tube. This supernatant can be best seen in Fig.5. The longitudinal slot 32 is in the inserted state of the dowel pin 28 arranged facing downwards and with in FIG a double arrow angle between the longitudinal axis of the longitudinal slot 32 and the vertical through the center of the dowel pin 28 is approx. 45 °. The supernatant is preferably selected on the one hand in such a way that always secure contact between housing 10 and pole tube (not shown) is manufactured; on the other hand, the retraction of the pole tube in the receiving space 20 is not difficult. The mentioned longitudinal bore 34 is so arranged in the rear wall 36 that the receiving space 20 there remains an opening which is circumferential of the dowel pin 28 can be closed with its overhang. If the longitudinal slot 32 with the points addressed angle in the direction of the receiving space 20, can under the influence of the pole tube to be inserted, the two free ends of the Dowel pin 28, which limit the longitudinal slot 32, relatively easily against each other move, but at all times secure contact with the pole tube is reached.

Claims (2)

  1. Switching device for actuating valves, with electrically earthed parts consisting of a housing (10) and a coil body (12) located therein, in which a pole tube with a switching part is guided and which is provided with a winding (14) of a conductor, which can be connected by means of a connection device (16) to a current source, characterised in that the pole tube is connected in a conducting manner by way of contacts to the earthed parts of the device at least until the time of a separation of the connection device (16) from the current source, in that the contacts are located at the end (26) of the device opposite the connection device (16) and that the earth connection between the pole tube and the housing (10) exists as an earthed part.
  2. Switching device according to Claim 2, characterised in that the contacts comprise a clamping pin (28), which can be inserted in a bore (34) on the rear wall (36) of the housing (10) and which projects by a projecting length into the receiving chamber (20) provided for the guidance of the pole tube within the device.
EP95111951A 1994-10-19 1995-07-29 Switching device with contact Expired - Lifetime EP0708458B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9416832U DE9416832U1 (en) 1994-10-19 1994-10-19 Switching device with contact
DE9416832U 1994-10-19

Publications (2)

Publication Number Publication Date
EP0708458A1 EP0708458A1 (en) 1996-04-24
EP0708458B1 true EP0708458B1 (en) 1999-06-02

Family

ID=6915083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111951A Expired - Lifetime EP0708458B1 (en) 1994-10-19 1995-07-29 Switching device with contact

Country Status (3)

Country Link
EP (1) EP0708458B1 (en)
DE (2) DE9416832U1 (en)
ES (1) ES2134381T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10213696C1 (en) * 2002-03-27 2003-10-30 Pierburg Gmbh Electromagnetic actuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3152325A1 (en) * 1981-04-09 1983-02-03 A. u. K. Müller GmbH & Co KG, 4000 Düsseldorf Solenoid valve
DE3309771C1 (en) * 1983-03-18 1984-07-12 Murrelektronik GmbH, 7155 Oppenweiler Housing for holding the electrical components which are required for connection of a magnetic coil of a hydraulic valve or the like
DE3546401A1 (en) * 1985-12-31 1987-07-02 Staiger Steuerungstech Magnetic head
DE4222239A1 (en) * 1992-07-07 1994-01-13 Wabco Westinghouse Fahrzeug Housing for a magnetic coil
JPH06112053A (en) * 1992-09-25 1994-04-22 Toshiba Corp Resin-molded equipment and manufacture thereof

Also Published As

Publication number Publication date
EP0708458A1 (en) 1996-04-24
DE9416832U1 (en) 1994-12-08
ES2134381T3 (en) 1999-10-01
DE59506090D1 (en) 1999-07-08

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