EP0408544B1 - Relay - Google Patents

Relay Download PDF

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Publication number
EP0408544B1
EP0408544B1 EP19900890209 EP90890209A EP0408544B1 EP 0408544 B1 EP0408544 B1 EP 0408544B1 EP 19900890209 EP19900890209 EP 19900890209 EP 90890209 A EP90890209 A EP 90890209A EP 0408544 B1 EP0408544 B1 EP 0408544B1
Authority
EP
European Patent Office
Prior art keywords
actuating device
guide
relay
test pin
armature
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
EP19900890209
Other languages
German (de)
French (fr)
Other versions
EP0408544A2 (en
EP0408544A3 (en
Inventor
Peter Casari
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.)
Tyco Electronics Austria GmbH
Original Assignee
EH Schrack Components AG
Schrack Components AG
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 EH Schrack Components AG, Schrack Components AG filed Critical EH Schrack Components AG
Publication of EP0408544A2 publication Critical patent/EP0408544A2/en
Publication of EP0408544A3 publication Critical patent/EP0408544A3/en
Application granted granted Critical
Publication of EP0408544B1 publication Critical patent/EP0408544B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/326—Latching movable parts mechanically with manual intervention, e.g. for testing, resetting or mode selection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/286—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a removable locking part acting directly on the operating part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/06—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using tools as locking means
    • H01H2300/066—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using tools as locking means for locking a switch in a test or an "installation" position

Definitions

  • the invention relates to a relay, in particular plug-in relay, with a housing supporting the magnet system, with an armature held in its rest position by a spring device and with a test pin movably mounted in the housing for manual actuation of the armature, which test pin has one end on the armature or can be brought into contact with a part attached to this and holds the anchor in its working position in its working position.
  • test pin is held substantially perpendicular to the hinged anchor in a wall of the cap of the relay and can be moved against the hinged anchor.
  • a generic locking relay is known from US-A-4 378 543, the armature of which is held by a spring in its rest position and can be brought into its working position for test purposes via a displaceable actuating element, and which is actuated from this by excitation the working position in which the armature is locked can be released again.
  • wire brackets have been provided in other known relays which are pivotally attached to the relay housing and which can be pivoted over the test pin in order to press it down.
  • the disadvantage of these known solutions is that this test and test bar always remains on the relay and is therefore available for misuse at any time.
  • such a bracket is inconspicuous and it is therefore very often forgotten to remove the fixings after the test in order to enable normal operation of the relays.
  • the invention therefore aims to avoid these disadvantages and to propose a relay of the type mentioned in the introduction, in which the test pin can only be locked in the working position by an authorized person and it is clearly evident whether the relay is in the test position or in normal operation is.
  • an actuating device for actuating the test pin which is separate from the relay and which can be inserted into the relay and can be locked with the relay in its working position in which it holds the test pin in its working position and which can only be separated from the relay again when force is applied is.
  • the actuating device can be locked with the relay by means of a bayonet lock. This creates a key-like type of locking for the actuator, which is easy and quick to use.
  • An embodiment of the invention can be characterized in that the actuating device can be inserted at one end into the guide of the test pin and has at this end radially outwardly directed pins which can be inserted into recesses in the guide and upon rotation of the actuating device into the working position in the guide reach behind radially inward projections.
  • slotted surfaces projecting into the interior of the guide in the region of its outer end can be arranged on the guide of the test pin, between which recesses are provided, into which the actuating device has the corresponding, radially projecting pin is insertable.
  • each link section extend over an angle of e.g. extend almost 180 ° and each link section has two inclined surfaces with opposite inclinations, between which a surface extending perpendicular to the axis of the guide is arranged.
  • the actuating device can be locked by a quarter turn and released again by a further quarter turn, irrespective of the direction.
  • the recesses of the guide and the Pin of the actuator preferably have inclined side walls against the diametral of the guide or the actuator.
  • the test pin is rotatably held in the guide and is provided with at least one radially projecting pin which can be brought into contact with a link arranged on the guide with surfaces inclined against the axis of the guide and that at the end of the test pin facing away from the armature axially projects an extension onto which the actuating device can be plugged, which is provided with radially projecting pins, which, when the actuating device is inserted, has a number of recesses corresponding to the number of pins of the actuating device, reach behind the flange facing inwards.
  • test pin is controlled during its rotation by the link arranged in the guide, the rotation being effected by the actuating device.
  • the inward flange ensures that the actuating device cannot be removed in the working position of the test pin, but can only be removed when the test pin is in the rest position.
  • a resilient stop cooperating with the radially projecting pin of the test pin is provided, which defines a detent position corresponding to the working position of the actuating device.
  • test pin can be brought into abutment on an inclined surface of a butt part arranged on the hinged anchor.
  • the actuating device is designed as a key. This makes their function as a key clearly recognizable for the user.
  • the actuating device has a conspicuously marked, for example by colors or inscriptions, which preferably serves at the same time as a handle. This makes it very easy to ensure that an actuating device that is used is no longer overlooked after the tests have been completed and is properly removed again.
  • the guide runs essentially perpendicular to the base plate of the relay, so that the actuating device can be used from the side facing away from the installation side of the relay, which is most easily accessible in most cases.
  • the relay has a base plate 1, on which a magnet system 2 is held in a manner not shown, which has a hinged armature 3 held in its rest position by a spring device 9, on which a contact is held is. Furthermore, a butt part 4 is arranged on the armature, which is made of an insulating material.
  • the magnet system 2 together with the contacts is surrounded by a cap 5 in which a test pin 6 'is guided in a guide 13'.
  • This test pin 6 ' can be pressed against the inclined surface 7 of the butt part 4, whereby the armature 3 can be pressed into its working position.
  • an actuator 8' is provided.
  • the actuating device 8 ' is designed as a key and has a handle 14, which is also designed as an information part with clear labeling (e.g. "TEST") and has a correspondingly striking color. This ensures that an actuating device that is used stands out and that the risk that an actuating device that is used remains inadvertently on a relay after the end of a test is avoided.
  • TEST clear labeling
  • the guide 13 ' has in its outer region on the inside a backdrop 20, which is shown in the developed state in Figs. 2b to 2d and which projects into the interior of the guide 13'.
  • the setting 20 has two sections 21, 22 which are separated by two recesses 23 which are offset from one another by 180 ° in the exemplary embodiment shown. These recesses correspond radially from the key 8 'projecting pin 24 which are arranged in the region of the free end of the key 8'.
  • This end region of the key 8 ' has a diametrically extending slot 25, whereby this region can be compressed, as can be seen in Fig. 2a.
  • the slot 25 of the key 8 ' extends at an angle of 90 ° to the connecting line of the diametrically opposite pin 24 of the key.
  • the depth of the recesses 23 of the guide 13 ' is dimensioned such that the pin 24 of the key can be inserted into the recesses 23 without narrowing the slot 25. This position of the key 8 'is shown in Fig.2b.
  • the guide 13 ' has 90 ° offset from the recesses 23 arranged further recesses 26 which are closed in the region of their upper end by the link portions 21, 22 upwards.
  • the link portions 21, 22 in the area of these recesses perpendicular to the axis of the guide 13 'extending surfaces 27 to which connect obliquely against the axis of the guide 13' extending surfaces 28, 29, the surfaces 28 and 29 having an opposite slope exhibit.
  • the depth of these recesses 26, which serve as run-up surfaces, corresponds to that of Recesses 23.
  • Both the recesses 26 and 23 have rounded side edges 32 and 33.
  • the diameter of the guide 13 'below the backdrop 20 is such that it corresponds to the distance between the outer surfaces of the pin 24 of the key 8' with the slot 25 largely compressed.
  • the side walls of the pin 24 have a slight inclination, so that the pin 24, which has fallen into the recesses 26, can be unscrewed from these recesses 26 by a corresponding effort when turning the key 8 '.
  • the test pin 6 ' has a guide portion 30 held in the guide 13' which engages with a spring-like projection in a recess 26 and is thus held non-rotatably.
  • At the end of this guide section 30 there is an eccentrically arranged pin 31 which bears against the abutment part 4 of the armature 3.
  • the force of the return spring 9 of the hinged armature 3 is sufficient to press the test pin 6 'over the inclined surface against which it rests when the armature falls.
  • test pin 6 ' is actuated in such a way that the key 8' is inserted into the guide 13 ', the pins 24 in the recesses 23 open at the top, which also have side walls 33 inclined against the diametral, between the link sections 21, 22 are introduced (Fig.2b) until the pin 24 can be rotated under the link portions 21, 22, wherein when turning the key 8 ', the pin 24 with their oblique side surfaces on the also oblique side walls 33 of the recesses 23, where the slot 25 of the key 8 'is narrowed (Fig.2c).
  • the key 8 Due to the inclined surfaces 28, 29 of the backdrop 20, the key 8 'pushes further down as it rotates further and presses the test pin 6' against the abutment part 4 of the armature 3, whereby this is pressed against its working position.
  • the actuating device is also formed by a key 8 ⁇ . This has on its one end face a slot 40 which meshes with an oppositely shaped axial extension 41 of the test pin 6 'in the attached state.
  • This key 8 ⁇ has radially projecting pins 42, which engage in the inserted state of the key 8g behind an inward flange 43, which is provided with a number of pins 42 corresponding number of recesses 43 'through which the key 8 ⁇ in the guide 13 ⁇ is insertable and rotatable in this.
  • the position when the key 8 ⁇ is introduced is shown in FIGS. 4a, 5a and 6a, a rotational position during rotation of the key 8 ⁇ in the direction of the working position in FIGS. 4b, 5b and 6b.
  • the test pin 6 ⁇ has a radially projecting pin 44 which slides along the link 45 arranged in the region of one end of the guide 13 ⁇ .
  • the backdrop 45 is formed by the lower end face of the substantially cylindrical guide 13 ⁇ against the The axis of the guide 13 ⁇ is inclined, as indicated by the broken line in FIG.
  • This guide 13 ⁇ also has a slot 47 into which a resilient tongue, which serves as a resilient stop 46, engages. This makes it possible to safely feel that the test pin 6 ⁇ and thus the armature 3 ⁇ have been reached.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Breakers (AREA)

Description

Die Erfindung bezieht sich auf ein Relais, insbesondere Steckrelais, mit einem das Magnetsystem abstützenden Gehäuse, mit einem durch eine Federeinrichtung in seiner Ruhelage gehaltenen Anker und mit einem im Gehäuse beweglich gelagerten Prüfstift zur Handbetätigung des Ankers, welcher Prüfstift mit seinem einen Ende an dem Anker oder an einem an diesem angebrachten Teil zur Anlage bringbar ist und in seiner Arbeitsstellung den Anker in dessen Arbeitsstellung hält.The invention relates to a relay, in particular plug-in relay, with a housing supporting the magnet system, with an armature held in its rest position by a spring device and with a test pin movably mounted in the housing for manual actuation of the armature, which test pin has one end on the armature or can be brought into contact with a part attached to this and holds the anchor in its working position in its working position.

Bei bekannten derartigen Relais ist der Prüfstift im wesentlichen senkrecht zum Klappanker in einer Wand der Kappe des Relais gehalten und ist gegen den Klappanker bewegbar.In known relays of this type, the test pin is held substantially perpendicular to the hinged anchor in a wall of the cap of the relay and can be moved against the hinged anchor.

Dazu ist aus der US-A-4 378 543 ein gattungsgemäßes Verriegelungs-Relais bekannt, dessen durch eine Feder in seiner Ruhestellung gehaltener Anker über ein verschiebbares Betätigungselement zu Prüfzwecken in seine Arbeitsstellung gebracht werden kann, und der durch dieses Betätigungselement aus einer durch eine Erregung der Spule bewirkten Arbeitsstellung, in der der Anker verriegelt ist, wieder befreit werden kann.For this purpose, a generic locking relay is known from US-A-4 378 543, the armature of which is held by a spring in its rest position and can be brought into its working position for test purposes via a displaceable actuating element, and which is actuated from this by excitation the working position in which the armature is locked can be released again.

Der Nachteil dieser Relais besteht darin, daß der Prüfstift in seiner Arbeitslage nicht fixiert werden kann, was insbesondere bei einer Anordnung einer größeren Anzahl von solchen Relais bei deren Überprüfung sehr unangenehm ist.The disadvantage of these relays is that the test pin cannot be fixed in its working position, which is very uncomfortable when checking a large number of such relays, in particular.

Deshalb wurden bei anderen bekannten Relais Drahtbügel vorgesehen, die schwenkbar am Relaisgehäuse befestigt sind und die zum Niederdrücken des Prüfstiftes über diesen geschwenkt werden können.
Der Nachteil dieser bekannten Lösungen ist jedoch, daß dieser Prüf- und Testbügel stets am Relais verbleibt und daher zu einer mißbräuchlichen Verwendung jederzeit zur Verfügung steht.
Darüberhinaus ist ein derartiger Bügel unauffällig und es wird daher sehr häufig vergessen, die Fixierungen nach dem Test wieder zu entfernen, um einen normalen Betrieb der Relais zu ermöglichen.For this reason, wire brackets have been provided in other known relays which are pivotally attached to the relay housing and which can be pivoted over the test pin in order to press it down.
The disadvantage of these known solutions, however, is that this test and test bar always remains on the relay and is therefore available for misuse at any time.
In addition, such a bracket is inconspicuous and it is therefore very often forgotten to remove the fixings after the test in order to enable normal operation of the relays.

Die Erfindung setzt sich daher zum Ziel, diese Nachteile zu vermeiden und ein Relais der eingangs erwähnten Art vorzuschlagen, bei dem der Prüfstift nur von einer authorisierten Person in der Arbeitslage arretiert werden kann und wobei eindeutig ersichtlich ist, ob das Relais in Prüfstellung oder im Normalbetrieb ist.The invention therefore aims to avoid these disadvantages and to propose a relay of the type mentioned in the introduction, in which the test pin can only be locked in the working position by an authorized person and it is clearly evident whether the relay is in the test position or in normal operation is.

Erfindungsgemäß wird dies erreicht durch eine vom Relais getrennte Betätigungseinrichtung zur Betätigung des Prüfstiftes, die in das Relais einsetzbar ist und in ihrer Arbeitsstellung, in der sie den Prüfstift in dessen Arbeitsstellung hält, mit dem Relais verriegelbar ist und die nur unter Krafteinwirkung wieder vom Relais trennbar ist. Durch diese Maßnahmen ist sichergestellt, daß nur ein Benützer, der eine passende Betätigungseinrichtung besitzt, das Relais in die Prüfstellung versetzen kann und daß die Betätigungseinrichtung vom Relais vollständig gelöst werden muß, um wieder den Normalbetrieb des Relais herzustellen. Eine eingesetzte Betätigungseinrichtung ist darüberhinaus auch ausreichend auffällig, um auf ein in den Testbetrieb versetztes Relais wirksam hinzuweisen zu können.According to the invention this is achieved by an actuating device for actuating the test pin which is separate from the relay and which can be inserted into the relay and can be locked with the relay in its working position in which it holds the test pin in its working position and which can only be separated from the relay again when force is applied is. These measures ensure that only a user who has a suitable actuating device can put the relay in the test position and that the actuating device must be completely detached from the relay in order to restore normal operation of the relay. An actuating device used is also sufficiently conspicuous to be able to effectively indicate a relay that has been put into test mode.

Dabei ist es von Vorteil, wenn die Betätigungseinrichtung durch einen Bajonettverschluß mit dem Relais verriegelbar ist. Dadurch wird eine schlüsselähnliche Verriegelungsart für die Betätigungseinrichtung geschaffen, die einfach und schnell bedienbar ist.It is advantageous if the actuating device can be locked with the relay by means of a bayonet lock. This creates a key-like type of locking for the actuator, which is easy and quick to use.

Eine Ausführungsform der Erfindung kann dadurch gekennzeichnet sein, daß die Betätigungseinrichtung mit einem Ende in die Führung des Prüfstiftes einsetzbar ist und an diesem Ende radial auswärts gerichtete Zapfen aufweist, die in Ausnehmungen der Führung einführbar sind und bei Verdrehung der Betätigungseinrichtung in die Arbeitsstellung in der Führung radial einwärts gerichtete Vorsprünge hintergreifen. Dies stellt eine einfache und sichere Art der Verriegelung der Betätigungseinrichtung dar und ist daher besonders vorzuziehen.An embodiment of the invention can be characterized in that the actuating device can be inserted at one end into the guide of the test pin and has at this end radially outwardly directed pins which can be inserted into recesses in the guide and upon rotation of the actuating device into the working position in the guide reach behind radially inward projections. This represents a simple and safe way of locking the actuating device and is therefore particularly preferable.

Als eine mögliche Ausführungsform der Erfindung können dabei an der Führung des Prüfstiftes im Bereich ihres äußeren Endes in das Innere der Führung vorspringende, schräge Flächen aufweisende Kulissenabschnitte angeordnet sein, zwischen denen Aussparungen vorgesehen sind, in die die Betätigungseinrichtung, die entsprechende, radial abstehende Zapfen aufweist, einführbar ist.
Durch diese Maßnahmen wird die Steuerung des Prüfstiftes durch die Betätigungseinrichtung besonders einfach sichergestellt. So kann der Schlüssel in die Ausnehmungen eingesetzt und danach verdreht werden. Dadurch wird der Schlüssel aufgrund der Neigung der Flächen der Kulissen nach unten gedrückt, wodurch auch der Prüfstift nach unten gedrückt wird und dadurch auch der Anker in seine Arbeitslage gebracht wird.As a possible embodiment of the invention, slotted surfaces projecting into the interior of the guide in the region of its outer end can be arranged on the guide of the test pin, between which recesses are provided, into which the actuating device has the corresponding, radially projecting pin is insertable.
These measures ensure the control of the test pin by the actuating device is particularly simple. So the key can be inserted into the recesses and after be twisted. As a result, the key is pressed down due to the inclination of the surfaces of the links, which also pushes the test pin down and thereby also brings the anchor into its working position.

Dabei ist es besonders vorteilhaft, wenn sich die Kulissenabschnitte über einen Winkel von z.B. nahezu 180° erstrecken und jeder Kulissenabschnitt zwei Schrägflächen mit einander entgegengesetzter Neigung aufweist, zwischen denen eine senkrecht zur Achse der Führung verlaufende Fläche angeordnet ist.It is particularly advantageous if the link sections extend over an angle of e.g. extend almost 180 ° and each link section has two inclined surfaces with opposite inclinations, between which a surface extending perpendicular to the axis of the guide is arranged.

Dadurch ist die Betätigungseinrichtung durch eine Vierteldrehung verriegelbar und durch eine weitere Vierteldrehung, gleichgültig in welche Richtung, wieder lösbar.As a result, the actuating device can be locked by a quarter turn and released again by a further quarter turn, irrespective of the direction.

Weiters kann vorgesehen sein, daß außer den die Kulisse unterteilenden Ausnehmungen weitere Ausnehmungen in der Führung angeordnet sind, die in Abziehrichtung der Betätigungseinrichtung durch die Kulisse abgeschlossen sind und in die die radial abstehenden Zapfen der Betätigungseinrichtung federnd einfallen können, wobei die Ausnehmungen der Führung und die Zapfen der Betätigungseinrichtung vorzugsweise gegen die Diametrale der Führung bzw. der Betätigungseinrichtung geneigte Seitenwände aufweisen. Durch diese Maßnahmen ist es möglich, die Arbeitsstellung des Prüfstiftes, die durch das Einfallen der Zapfen des Schlüssels markiert ist, sicher erfühlen zu können. Außerdem wird diese dadurch auch entsprechend gesichert, daß es eben eines entsprechenden Kraftaufwandes bedarf, um den Schlüssel aus dieser Raststellung wieder entfernen zu können.Furthermore, it can be provided that in addition to the recesses dividing the link, further recesses are arranged in the guide, which are closed by the link in the pulling-off direction of the actuating device and into which the radially projecting pins of the actuating device can spring in, the recesses of the guide and the Pin of the actuator preferably have inclined side walls against the diametral of the guide or the actuator. These measures make it possible to feel the working position of the test pin, which is marked by the protrusion of the key. In addition, this is also appropriately secured in that a corresponding effort is required to be able to remove the key from this locked position again.

Bei einer anderen Ausführungsform der Erfindung kann vorgesehen sein, daß der Prüfstift drehbar in der Führung gehalten und mit mindestens einem radial abstehenden Zapfen versehen ist, der mit einer an der Führung angeordneten Kulisse mit gegen die Achse der Führung geneigt verlaufenden Flächen in Anlage bringbar ist und daß an dem vom Anker abgekehrten Ende des Prüfstiftes ein Ansatz axial absteht, auf den die Betätigungseinrichtung aufsteckbar ist, die mit radial abstehenden Zapfen versehen ist, die im eingesteckten Zustand der Betätigungseinrichtung einen mit einer der Anzahl der Zapfen der Betätigungseinrichtung entsprechenden Anzahl von Ausnehmungen versehenen, nach innen gerichteten Flansch hintergreifen.In another embodiment of the invention it can be provided that the test pin is rotatably held in the guide and is provided with at least one radially projecting pin which can be brought into contact with a link arranged on the guide with surfaces inclined against the axis of the guide and that at the end of the test pin facing away from the armature axially projects an extension onto which the actuating device can be plugged, which is provided with radially projecting pins, which, when the actuating device is inserted, has a number of recesses corresponding to the number of pins of the actuating device, reach behind the flange facing inwards.

Bei dieser Ausführungsform wird der Prüfstift bei seiner Drehung durch die in der Führung angeordneten Kulisse gesteuert, wobei die Drehung durch die Betätigungseinrichtung bewirkt wird. Dabei wird durch den nach innen gerichteten Flansch sichergestellt, daß die Betätigungseinrichtung in der Arbeitsstellung des Prüfstiftes nicht entfernt werden kann, sondern nur bei in Ruhestellung befindlichem Prüfstift abgezogen werden kann.In this embodiment, the test pin is controlled during its rotation by the link arranged in the guide, the rotation being effected by the actuating device. The inward flange ensures that the actuating device cannot be removed in the working position of the test pin, but can only be removed when the test pin is in the rest position.

Um hierbei die Arbeitsstellung des Prüfstiftes deutlich erkennen zu können, ist vorgesehen, daß ein mit dem radial abstehenden Zapfen des Prüfstiftes zusammenwirkender federnder Anschlag vorgesehen ist, der eine der Arbeitsstellung der Betätigungseinrichtung entsprechende Raststellung definiert. Durch diese Maßnahmen wird die Erkennbarkeit, ob bei einem Relais die Betätigungseinrichtung den Prüfstift in dessen Arbeitsstellung hält, noch weiter verbessert.In order to be able to clearly recognize the working position of the test pin, it is provided that a resilient stop cooperating with the radially projecting pin of the test pin is provided, which defines a detent position corresponding to the working position of the actuating device. These measures further improve the detectability of whether the actuating device in a relay holds the test pin in its working position.

Bei all diesen Ausführungsformen kann der Prüfstift an einer Schrägfläche eines an dem Klappanker angeordneten Stoßteiles zur Anlage bringbar sein. Durch diese Maßnahmen ist eine besonders schlanke Bauweise des Relais möglich.In all of these embodiments, the test pin can be brought into abutment on an inclined surface of a butt part arranged on the hinged anchor. These measures enable the relay to be of particularly slim design.

Desweiteren ist es vorteilhaft, wenn die Betätigungseinrichtung als Schlüssel ausgebildet ist. Dadurch wird ihre Funktion als Schlüssel auch für den Benützer deutlich erkennbar.Furthermore, it is advantageous if the actuating device is designed as a key. This makes their function as a key clearly recognizable for the user.

Dabei kann weiters vorgesehen sein, daß die Betätigungseinrichtung einen auffällig, z.B. durch Farben oder Aufschriften, markierten Hinweisteil aufweist, der vorzugsweise gleichzeitig als Handgriff dient.
Dadurch läßt sich auf sehr einfache Weise erreichen, daß eine eingesetzt Betätigungseinrichtung nach Abschluß der Tests nicht mehr übersehen wird und ordnungsgemäß wieder entfernt wird.It can further be provided that the actuating device has a conspicuously marked, for example by colors or inscriptions, which preferably serves at the same time as a handle.
This makes it very easy to ensure that an actuating device that is used is no longer overlooked after the tests have been completed and is properly removed again.

Ebenso ist es vorteilhaft, wenn die Führung im wesentlichen senkrecht zur Grundplatte des Relais verläuft, wodurch die Betätigungseinrichtung von der der Einbauseite des Relais abgewandten Seite, die in den meisten Fällen am leichtesten zugänglich ist, einsetzbar ist.It is also advantageous if the guide runs essentially perpendicular to the base plate of the relay, so that the actuating device can be used from the side facing away from the installation side of the relay, which is most easily accessible in most cases.

Die Erfindung wird nun anhand der Zeichnung näher erläutert. Dabei zeigt:

  • Fig.1 eine erste Ausführungsform des erfindungsgemäßen Relais in Seitenansicht im Querschnitt,
  • Fig.2a-d Querschnitte entlang der Linie A-A in Fig.1, wobei in den Fig. 2 b) bis d) noch jeweils darunter die abgewickelte Kulisse der Führung und der Zapfen der Betätigungseinrichtung in verschiedenen Drehstellungen dargestellt ist,
  • Fig.3 eine zweite Ausführungsform des erfindungsgemäßen Relais in Seitenansicht im Querschnitt,
  • Fig.4a,b Querschnitte entlang der Linie A-A in Fig.3 in verschiedenen Drehstellungen der Betätigungseinrichtung,
  • Fig.5a,b Querschnitte entlang der Linie B-B in Fig.3 in verschiedenen Drehstellungen der Betätigungseinrichtung,
  • Fig.6a,b die abgewickelte Kulisse der Führung und der Zapfen der Betätigungseinrichtung der Ausführungsform aus der Fig.3 in verschiedenen Drehstellungen.
The invention will now be explained in more detail with reference to the drawing. It shows:
  • 1 shows a first embodiment of the relay according to the invention in side view in cross section,
  • 2a-d cross-sections along the line AA in FIG. 1, the unfolded backdrop of the guide and the pin of the actuating device being shown in different rotational positions in FIGS. 2b) to d),
  • 3 shows a second embodiment of the relay according to the invention in side view in cross section,
  • 4 a, b cross sections along the line AA in FIG. 3 in different rotational positions of the actuating device,
  • 5a, b cross sections along the line BB in Figure 3 in different rotational positions of the actuating device,
  • 6a, b the developed backdrop of the guide and the pin of the actuating device of the embodiment from FIG. 3 in different rotational positions.

Wie Fig.1 zeigt, weist das Relais bei allen Ausführungsformen eine Grundplatte 1 auf, an der ein Magnetsystem 2 in einer nicht näher dargestellten Weise gehalten ist, das einen durch eine Federeinrichtung 9 in seiner Ruhelage gehaltenen Klappanker 3 aufweist, an dem ein Kontakt gehalten ist. Weiters ist an dem Anker noch ein Stoßteil 4 angeordnet, der aus einem Isoliermaterial hergestellt ist.As shown in FIG. 1, in all embodiments the relay has a base plate 1, on which a magnet system 2 is held in a manner not shown, which has a hinged armature 3 held in its rest position by a spring device 9, on which a contact is held is. Furthermore, a butt part 4 is arranged on the armature, which is made of an insulating material.

Das Magnetsystem 2 samt den Kontakten ist von einer Kappe 5 umgeben, in der ein Prüfstift 6′ in einer Führung 13′ geführt ist. Dieser Prüfstift 6′ ist gegen die Schrägfläche 7 des Stoßteiles 4 preßbar, wodurch der Anker 3 in seine Arbeitsstellung preßbar ist.The magnet system 2 together with the contacts is surrounded by a cap 5 in which a test pin 6 'is guided in a guide 13'. This test pin 6 'can be pressed against the inclined surface 7 of the butt part 4, whereby the armature 3 can be pressed into its working position.

Um den Prüfstift 6′ in dessen Arbeitsstellung zu halten, wie dies in der Fig. 1 dargestellt ist, ist eine Betätigungseinrichtung 8′ vorgesehen.In order to hold the test pin 6 'in its working position, as shown in Fig. 1, an actuator 8' is provided.

Die Betätigungseinrichtung 8′ ist als Schlüssel ausgebildet und weist eine Handgriff 14 auf, der gleichzeitig als Hinweisteil mit deutlicher Beschriftung (z.B. "TEST") ausgebildet ist und eine entsprechend auffällige Färbung besitzt. Dadurch ist sichergestellt, daß eine eingesetzte Betätigungseinrichtung auffällt und daß daher die Gefahr, daß eine eingesetzte Betätigungseinrichtung nach Beendigung eines Tests versehentlich an einem Relais verbleibt, vermieden wird.The actuating device 8 'is designed as a key and has a handle 14, which is also designed as an information part with clear labeling (e.g. "TEST") and has a correspondingly striking color. This ensures that an actuating device that is used stands out and that the risk that an actuating device that is used remains inadvertently on a relay after the end of a test is avoided.

Die Führung 13′ weist in ihrem äußeren Bereich an der Innenseite eine Kulisse 20 auf, die im abgewickelten Zustand in den Fig. 2b bis 2d dargestellt ist und die in das Innere der Führung 13′ vorragt.The guide 13 'has in its outer region on the inside a backdrop 20, which is shown in the developed state in Figs. 2b to 2d and which projects into the interior of the guide 13'.

Die Kulisse 20 weist zwei Abschnitte 21, 22 auf, die durch zwei Ausnehmungen 23, die beim dargestellten Ausführungsbeispiel um 180° gegeneinander versetzt sind, getrennt sind. Diese Ausnehmungen entsprechen radial vom Schlüssel 8′ abstehenden Zapfen 24, die im Bereich des freien Endes des Schlüssels 8′ angeordnet sind. Dabei weist dieser Endbereich des Schlüssels 8′ einen diametral verlaufenden Schlitz 25 auf, wodurch dieser Bereich zusammengedrückt werden kann, wie dies in der Fig. 2a zu ersehen ist. Dabei verläuft der Schlitz 25 des Schlüssels 8′ in einem Winkel von 90° zur Verbindungslinie der ebenfalls einander diametral gegenüberliegenden Zapfen 24 des Schlüssels.The setting 20 has two sections 21, 22 which are separated by two recesses 23 which are offset from one another by 180 ° in the exemplary embodiment shown. These recesses correspond radially from the key 8 'projecting pin 24 which are arranged in the region of the free end of the key 8'. This end region of the key 8 'has a diametrically extending slot 25, whereby this region can be compressed, as can be seen in Fig. 2a. The slot 25 of the key 8 'extends at an angle of 90 ° to the connecting line of the diametrically opposite pin 24 of the key.

Die Tiefe der Ausnehmungen 23 der Führung 13′ ist so bemessen, daß die Zapfen 24 des Schlüssels, ohne eine Verengung des Schlitzes 25 in die Ausnehmungen 23 eingeführt werden können. Diese Stellung des Schlüssels 8′ ist in Fig.2b gezeigt.The depth of the recesses 23 of the guide 13 'is dimensioned such that the pin 24 of the key can be inserted into the recesses 23 without narrowing the slot 25. This position of the key 8 'is shown in Fig.2b.

Die Führung 13′ weist um 90° gegenüber den Ausnehmungen 23 versetzt angeordnete weitere Ausnehmungen 26 auf, die im Bereich ihres oberen Endes von den Kulissenabschnitten 21, 22 nach oben zu geschlossen sind. Dabei weisen die Kulissenabschnitte 21, 22 im Bereich dieser Ausnehmungen senkrecht zur Achse der Führung 13′ verlaufende Flächen 27 auf, an die schräg gegen die Achse der Führung 13′ verlaufende Flächen 28, 29 anschließen, wobei die Flächen 28 und 29 eine einander entgegengesetzte Steigung aufweisen. Die Tiefe dieser Ausnehmungen 26, die als Auflaufflächen dienen, entspricht jener der Ausnehmungen 23. Sowohl die Ausnehmungen 26 als auch 23 besitzen abgerundete Seitenkanten 32 und 33.The guide 13 'has 90 ° offset from the recesses 23 arranged further recesses 26 which are closed in the region of their upper end by the link portions 21, 22 upwards. The link portions 21, 22 in the area of these recesses perpendicular to the axis of the guide 13 'extending surfaces 27 to which connect obliquely against the axis of the guide 13' extending surfaces 28, 29, the surfaces 28 and 29 having an opposite slope exhibit. The depth of these recesses 26, which serve as run-up surfaces, corresponds to that of Recesses 23. Both the recesses 26 and 23 have rounded side edges 32 and 33.

Der Durchmesser der Führung 13′ unterhalb der Kulisse 20 ist so bemessen, daß er dem Abstand der äußeren Flächen der Zapfen 24 des Schlüssels 8′ bei weitgehend zusammengepreßtem Schlitz 25 entspricht. Dabei weisen die Seitenwände der Zapfen 24 eine geringfügige Schrägstellung auf, sodaß die in die Ausnehmungen 26 eingefallenen Zapfen 24 durch einen entsprechenden Kraftaufwand beim Verdrehen des Schlüssels 8′ aus diesen Ausnehmungen 26 wieder herausgedreht werden können.The diameter of the guide 13 'below the backdrop 20 is such that it corresponds to the distance between the outer surfaces of the pin 24 of the key 8' with the slot 25 largely compressed. The side walls of the pin 24 have a slight inclination, so that the pin 24, which has fallen into the recesses 26, can be unscrewed from these recesses 26 by a corresponding effort when turning the key 8 '.

Der Prüfstift 6′ weist einen in der Führung 13′ gehaltenen Führungsabschnitt 30 auf, der mit einem federartigen Vorsprung in eine Ausnehmung 26 eingreift und so unverdrehbar gehalten ist. An diesen Führungsabschnitt 30 schließt sich stirnseitig ein außermittig angeordneter Stift 31 an, der an dem Stoßteil 4 des Ankers 3 anliegt. Dabei reicht im Normalbetrieb die Kraft der Rückzugsfeder 9 des Klappankers 3 aus, um beim Abfallen des Ankers den Prüfstift 6′ über die Schrägfläche, an der dieser anliegt, nach oben zu drücken.The test pin 6 'has a guide portion 30 held in the guide 13' which engages with a spring-like projection in a recess 26 and is thus held non-rotatably. At the end of this guide section 30 there is an eccentrically arranged pin 31 which bears against the abutment part 4 of the armature 3. In normal operation, the force of the return spring 9 of the hinged armature 3 is sufficient to press the test pin 6 'over the inclined surface against which it rests when the armature falls.

Die Betätigung des Prüfstiftes 6′ erfolgt in der Weise, daß der Schlüssel 8′ in die Führung 13′ eingesteckt wird, wobei die Zapfen 24 in die oben offenen Ausnehmungen 23, die ebenfalls gegen die Diametrale geneigte Seitenwände 33 aufweisen, zwischen den Kulissenabschnitten 21, 22 eingeführt werden (Fig.2b), bis die Zapfen 24 unter die Kulissenabschnitte 21, 22 gedreht werden können, wobei beim Verdrehen des Schlüssels 8′ die Zapfen 24 mit ihren schrägen Seitenflächen auf den ebenfalls schrägen Seitenwänden 33 der Ausnehmungen 23 auf laufen, wobei der Schlitz 25 des Schlüssels 8′ verengt wird (Fig.2c).The test pin 6 'is actuated in such a way that the key 8' is inserted into the guide 13 ', the pins 24 in the recesses 23 open at the top, which also have side walls 33 inclined against the diametral, between the link sections 21, 22 are introduced (Fig.2b) until the pin 24 can be rotated under the link portions 21, 22, wherein when turning the key 8 ', the pin 24 with their oblique side surfaces on the also oblique side walls 33 of the recesses 23, where the slot 25 of the key 8 'is narrowed (Fig.2c).

Aufgrund der schrägen Flächen 28, 29 der Kulisse 20 schiebt sich der Schlüssel 8′ beim weiteren Verdrehen weiter nach unten und drückt dabei den Prüfstift 6′ gegen den Stoßteil 4 des Ankers 3, wodurch dieser gegen seine Arbeitsstellung gepreßt wird.Due to the inclined surfaces 28, 29 of the backdrop 20, the key 8 'pushes further down as it rotates further and presses the test pin 6' against the abutment part 4 of the armature 3, whereby this is pressed against its working position.

Ist eine gegen die Einsteckstellung des Schlüssels 8′ um 90° versetzte Stellung des Schlüssels 8′ erreicht, so fallen die Zapfen 24 in die Ausnehmungen 26 ein, wobei aber, da die Kulissenabschnitte 21, 22 die Ausnehmungen 26 nach oben zu abschließen, der Schlüssel 8′ nicht abgezogen werden kann (Fig.2d).Is a against the insertion position of the key 8 'offset by 90 ° position of the key 8' reached, the pins 24 fall into the recesses 26, but, since the link portions 21, 22 to complete the recesses 26, the key 8 'cannot be removed (Fig.2d).

In dieser Stellung, die durch das Einrasten der Zapfen 24 in die Ausnehmungen 26 bei der Betätigung des Schlüssels 8′ erfühlt werden kann, ist die Arbeitsstellung des Prüfstiftes 6′ und damit auch des Ankers 3 erreicht.In this position, which can be felt by the engagement of the pin 24 in the recesses 26 when the key 8 'is actuated, the working position of the test pin 6' and thus also the armature 3 is reached.

Durch Weiter- oder Zurückdrehen des Schlüssels 8′ gleiten die Seitenflächen der Zapfen 24 an den schrägen Seitenwänden 32 entlang, wobei sich der Schlitz 25 wieder verengt (FIg.2c) Ist die eine Stellung des Schlüssels erreicht, in der dessen Zapfen 24 in die Ausnehmungen 23 einfallen (Fig.2b), kann der Schlüssel wieder abgezogen werden, wodurch das Relais wieder seine Ruhestellung einnimmt und normal betrieben werden kann.By turning the key 8 'further or back, the side surfaces of the pin 24 slide along the inclined side walls 32, the slot 25 narrowing again (FIG. 2c), the position of the key having been reached in which the pin 24 is in the recesses 23 occur (Fig.2b), the key can be removed again, whereby the relay resumes its normal position and can be operated normally.

Bei der Ausführungsform nach den Fig. 3 bis 6 ist die Betätigungseinrichtung ebenfalls durch einen Schlüssel 8˝ gebildet. Dieser weist an seiner einen Stirnseite einen Schlitz 40 auf, der im aufgesteckten Zustand mit einem gegengleich geformten axialen Ansatz 41 des Prüfstiftes 6˝ kämmt.In the embodiment according to FIGS. 3 to 6, the actuating device is also formed by a key 8˝. This has on its one end face a slot 40 which meshes with an oppositely shaped axial extension 41 of the test pin 6 'in the attached state.

Dieser Schlüssel 8˝ weist radial abstehende Zapfen 42 auf, die im eingesteckten Zustand des Schlüssels 8˝ einen nach innengerichteten Flansch 43 hintergreifen, der mit einer der Anzahl der Zapfen 42 entsprechenden Anzahl von Ausnehmungen 43′ versehen ist, durch die der Schlüssel 8˝ in die Führung 13˝ einführbar und in dieser verdrehbar ist.
Die Stellung bei Einführung des Schlüssels 8˝ ist in den Fig.4a, 5a und 6a dargestellt, eine Drehstellung während Drehung des Schlüssels 8˝ in Richtung der Arbeitsstellung in den Fig.4b, 5b und 6b.This key 8˝ has radially projecting pins 42, which engage in the inserted state of the key 8g behind an inward flange 43, which is provided with a number of pins 42 corresponding number of recesses 43 'through which the key 8˝ in the guide 13˝ is insertable and rotatable in this.
The position when the key 8˝ is introduced is shown in FIGS. 4a, 5a and 6a, a rotational position during rotation of the key 8˝ in the direction of the working position in FIGS. 4b, 5b and 6b.

Der Prüfstift 6˝ weist einen radial abstehenden Zapfen 44 auf, der an der im Bereich eines Endes der Führung 13˝ angeordneten Kulisse 45 entlanggleitet. Dadurch kommt es bei einem Verdrehen des Prüfstiftes 6˝ mittels des aufgesteckten Schlüssels 8˝ zu einem Verschieben des Prüfstiftes 6˝ in axialer Richtung, wodurch der Anker 3 in seine Arbeitsstellung gedrängt wird.The test pin 6˝ has a radially projecting pin 44 which slides along the link 45 arranged in the region of one end of the guide 13˝. As a result, when the test pin 6˝ is rotated by means of the attached key 8˝, the test pin 6 einem is displaced in the axial direction, as a result of which the armature 3 is forced into its working position.

Dabei ist die Kulisse 45 durch die untere Stirnfläche der im wesentlichen zylindrischen Führung 13˝ gebildet, die gegen die Achse der Führung 13˝ geneigt verläuft, wie in Fig.3 strichliert angedeutet ist. Diese Führung 13˝ weist weiters einen Schlitz 47 auf, in den eine federnde Zunge, die als federnder Anschlag 46 dient, eingreift. Dies ermöglicht es, die Erreichung der Arbeitsstellung des Prüfstiftes 6˝ und damit auch des Ankers 3˝ sicher zu erfühlen.The backdrop 45 is formed by the lower end face of the substantially cylindrical guide 13˝ against the The axis of the guide 13˝ is inclined, as indicated by the broken line in FIG. This guide 13˝ also has a slot 47 into which a resilient tongue, which serves as a resilient stop 46, engages. This makes it possible to safely feel that the test pin 6˝ and thus the armature 3˝ have been reached.

Claims (12)

  1. Relay, in particular plug-in relay, comprising a housing which supports the magnet system (2), an armature (3) which is held in its quiescent position by a spring device (9), and a test pin (6′, 6˝), movably mounted in the housing, for manual actuation of the armature (3), which test pin (6′, 6˝) can be made to bear with its one end against the armature (3) or against a part fitted to said armature (3) and in its operating position holds the armature (3) in its operating position, characterized by an actuating device (8′, 8˝), separate from the relay, for actuating the test pin (6′, 6˝), which actuating device can be inserted into the relay and can be locked in its operating position, in which it holds the test pin (6′, 6˝) in its operating position, to the relay and which can be separated again from the relay only under the influence of force.
  2. Relay according to Claim 1, characterized in that the actuating device (8′, 8˝) can be locked to the relay by means of a bayonet catch.
  3. Relay according to Claim 1 or 2, characterized in that the actuating device (8′, 8˝) can be inserted with one end into the guide (13′, 13˝) of the test pin and has at this end pegs (24, 42), aligned radially outwards, which can be inserted into recesses (23, 43′) of the guide and upon rotation of the actuating device (8′, 8˝) into the operating position engage behind projections (27, 28, 29, 43) aligned radially inwards in the guide (13′, 13˝),
  4. Relay according to Claim 3, characterized in that on the guide (13′) of the test pin (6′) there are arranged in the region of its outer end slotted sections (21, 22) which have inclined surfaces (28, 29) projecting into the interior of the guide (13′), between which slotted sections cutouts (23) are provided into which the actuating device (8′), which has corresponding radially projecting pegs (24), can be inserted.
  5. Relay according to Claim 4, characterized in that the slotted sections (21, 22) extend over an angle of for example approximately 180° and each slotted section (21, 22) has two inclined surfaces (28, 29) with mutually opposite inclination, between which a surface (27) is arranged which runs perpendicularly to the axis of the guide (13′).
  6. Relay according to Claim 4 or 5, characterized in that in addition to the recesses (23) which subdivide the slotted member (20) there are arranged in the guide (13′) further recesses (26) which are closed in the pull-off direction of the actuating device (8′) by the slotted member (20) and into which the radially projecting pegs (24) of the actuating device (8′) can engage in a resilient manner, the recesses (23, 26) of the guide (13′) and the pegs (24) of the actuating device (8′) preferably having side walls (32, 33) which are inclined with respect to the diametral of the guide (13′) or the actuating device (8′).
  7. Relay according to Claim 3, characterized in that the test pin (6˝) is rotatably held in the guide (13˝) and is provided with at least one radially projecting peg (44) which can be made to bear against a slotted member (45), arranged on the guide (13˝), with surfaces extending in an inclined manner with respect to the axis of the guide (13˝), and in that at that end of the test pin (6˝) which faces away from the armature (3) an attachment (41) projects axially onto which the actuating device (8˝) can be plugged, which actuating device is provided with radially projecting pegs (42) which in the plugged-in state of the actuating device (8˝) engage behind a flange (43) which is aligned inwards and is provided with a number of recesses (43′) which corresponds to the number of pegs (42) of the actuating device.
  8. Relay according to Claim 7, characterized in that a resilient stop (46) is provided which interacts with a radially projecting peg (44) of the test pin (6˝) and defines a latching position which corresponds to the operating position of the actuating device (8˝).
  9. Relay according to one of Claims 1 to 8, characterized in that the test pin (6′, 6˝) can be made to bear against an inclined surface (7) of a push part (4) arranged on the hinged armature (3).
  10. Relay according to one of Claims 1 to 9, characterized in that the actuating device (8′, 8˝) is designed as a key.
  11. Relay according to one of Claims 1 to 10, characterized in that the actuating device (8′, 8˝) has an indication part which is marked in a conspicuous manner, for example by colours or inscriptions, and at the same time preferably serves as a handle (14).
  12. Relay according to one of Claims 1 to 11, characterized in that the guide (13′, 13˝) extends essentially at right angles to the baseplate (1) of the relay.
EP19900890209 1989-07-12 1990-07-10 Relay Expired - Lifetime EP0408544B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT169189 1989-07-12
AT1691/89 1989-07-12

Publications (3)

Publication Number Publication Date
EP0408544A2 EP0408544A2 (en) 1991-01-16
EP0408544A3 EP0408544A3 (en) 1991-11-27
EP0408544B1 true EP0408544B1 (en) 1995-10-18

Family

ID=3518913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900890209 Expired - Lifetime EP0408544B1 (en) 1989-07-12 1990-07-10 Relay

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EP (1) EP0408544B1 (en)
DE (1) DE59009783D1 (en)
ES (1) ES2081364T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524135A3 (en) * 1991-07-18 1994-07-27 Elesta Ag Elektronik Relay
IT1292317B1 (en) * 1997-05-20 1999-01-29 Finder Spa ELECTROMAGNETIC RELAY EQUIPPED WITH BISTABLE SAFETY TEST BUTTON.
DE19727990C1 (en) * 1997-07-01 1998-11-19 Schrack Components Ag Electromagnetic relay with manual actuator
DE202007015207U1 (en) * 2007-11-02 2008-01-31 Moeller Gmbh actuator
FR3120469A1 (en) 2021-03-03 2022-09-09 Alstom Transport Technologies Locking key for electrical contactor and method of locking such a contactor with such a key

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466848A1 (en) * 1979-09-28 1981-04-10 Alberti Rosette Thermally controlled electromagnetic relay - has bimetal strip armature whose deformation increases contact engagement pressure and delays opening after de-energising
US4378543A (en) * 1981-11-18 1983-03-29 Gulf & Western Manufacturing Company Latch relay with manual reset and test
US4502030A (en) * 1983-08-26 1985-02-26 Allied Corporation High reliability solenoid switch
DE8812573U1 (en) * 1988-10-06 1988-11-17 Christian Geyer Gmbh & Co, 8500 Nuernberg, De

Also Published As

Publication number Publication date
EP0408544A2 (en) 1991-01-16
DE59009783D1 (en) 1995-11-23
ES2081364T3 (en) 1996-03-01
EP0408544A3 (en) 1991-11-27

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