EP0640243A1 - Polarized power relay. - Google Patents

Polarized power relay.

Info

Publication number
EP0640243A1
EP0640243A1 EP93908825A EP93908825A EP0640243A1 EP 0640243 A1 EP0640243 A1 EP 0640243A1 EP 93908825 A EP93908825 A EP 93908825A EP 93908825 A EP93908825 A EP 93908825A EP 0640243 A1 EP0640243 A1 EP 0640243A1
Authority
EP
European Patent Office
Prior art keywords
contact
relay according
coil
armature
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93908825A
Other languages
German (de)
French (fr)
Other versions
EP0640243B1 (en
Inventor
Helmut Schedele
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0640243A1 publication Critical patent/EP0640243A1/en
Application granted granted Critical
Publication of EP0640243B1 publication Critical patent/EP0640243B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/026—Details concerning isolation between driving and switching circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement

Definitions

  • the invention relates to a polarized electromagnetic relay with a coil, an elongated permanent magnet arranged above the coil parallel to the coil axis, which has end poles of the same name at both ends and a central pole of the same name in the middle thereof. with a core arranged inside the coil, which is coupled at both ends via yoke legs to the two ends of the permanent magnet, and with an elongated rocker armature, which is supported over the central pole of the permanent magnet and forms a working air gap with both yoke legs.
  • Such a relay with a -; - ⁇ -pole magnet and a rocker armature mounted above these magnets is known for example from EP-A-0 197 391.
  • the contact system is also arranged above the coil in the area of the armature, the contact springs arranged on both sides of the armature being connected directly to the armature and executing their switching movements directly with the armature.
  • this object is achieved in a relay of the type mentioned in the introduction in that a contact set with at least one contact spring arranged at least approximately to the coil axis and at least one fixed contact element is arranged underneath the coil, and in front of one end of the coil a movable one perpendicular to the coil axis.
  • Slider made of insulating material is arranged, which is coupled on the one hand to a movable end of the armature and on the other hand to a movable end of the contact spring.
  • the contact elements on the underside of the relay are already arranged in the vicinity of the connection side, so that short connection elements do not generate excessive heat loss even when carrying high currents. Since the anchor with the iron parts of the magnet system Eagle ⁇ set to "is the contact elements on the upper side of the coil, is obtained already by the spatial distance-a large insulating distance between the contact system and the magnet system. The coil and the entire magnet system gron ⁇ NEN moreover are shielded from the contact system by means of a corresponding constructive design of a base body with the creation of long insulating sections.
  • This partition can additionally have a laterally open slot into which an insulating plate is inserted. In this way, three superposed insulating material walls between the contact set and the coil are obtained, which ensures the dielectric strength required for certain applications.
  • the arranged on a front side DER coil insulation-shifter which provides a connection between the armature and the contact system her ⁇ ", can by appropriate overlaps with the base body • provide labyrinth-like insulating clearances.
  • FIGS. 1 to 3 show a first embodiment of a relay designed according to the invention in three different sectional views
  • FIG. 4 shows an exploded illustration of the relay from FIGS. 1 to 3 with an additional illustration of the preassembled magnet system
  • FIGS. 5 and 6 show two details of the coupling between armature and slide modified in comparison to FIG.
  • FIG. 7 shows an embodiment of the coupling between the contact spring and slide
  • FIGS. 1 to 4 show a second embodiment of a relay designed according to the invention in three sectional views.
  • the relay shown in FIGS. 1 to 4 has a base body 1 with a central partition 3 arranged parallel to the bottom side, on the side walls 4 and 5 and 6 and 7 which are formed upwards, a trough-shaped receptacle for a plug-in which can be inserted from above Form magnet system 2.
  • the partition wall 3, together with a parallel bottom wall 8 and an extension of the side wall 4 encloses an approximately U-shaped contact space 9, which is open to the right in FIG. 1.
  • the base body 1, together with a cap 10 which can be fitted from above, forms an all-round closed housing.
  • the magnet system 2 has a tubular coil body 11 with end flanges 12 and 13, between which a winding 14 is arranged.
  • a core yoke 15 or 16 with a core leg 15a or 16a is inserted into the tubular opening of the coil former 11 "from both sides, so that the two yoke legs 15b and 16b bent at right angles are parallel and upward. Between them Both yoke legs are arranged above the coil and parallel to the coil axis, a rod-shaped, three-pole magnetized permanent magnet 17, which in the area
  • the permanent magnet consists for example of an AlNiCo alloy and can easily be cut in this case of a tape. By thermoplastic deformation of the reel flanges, the magnet may be attached body at Spulen ⁇ . Also, the core yokes 15 and 16 who - The fixed in a suitable manner on the bobbin.
  • the core legs 15a and 16a are designed so that they form a large overlap area lying next to one another.
  • the two core yokes can be identical and still have a good flow transition between the two Allow sharing. The number of parts and manufacturing steps is thus reduced.
  • An armature 18 designed as a rocker is mounted on the central pole N of the permanent magnet 17.
  • This anchor is slightly bent in a V-shape towards the permanent magnet in its central region, so that the ends 18a and 18b each form an air gap with the corresponding yoke legs 15b and 16b.
  • a bearing spring 19, which is preferably made of ferromagnetic material, is used to mount the armature, which is fastened to the underside of the armature with rivets 20 and is fastened with correspondingly bent latching flaps 21 in corresponding recesses in the permanent magnet 17 by latching.
  • the bearing spring 19 forms a Torsionsba ⁇ dlagerung for the armature.
  • This arrangement and shape of the bearing spring ensures that the armature is mounted without friction and that at the same time there is a good flow transition from the permanent magnet 17 to the armature 18. From above, the anchor is also held or secured in the bearing by a rib 22 formed on the cap 10. Since the armature is supported in its center of gravity, it is largely insensitive to vibrations in its switching state.
  • the armature movement is transmitted via a slide 23 to a contact spring set to be described, this slide being arranged between the side wall 5 of the base body and a side wall of the cap 10 and being movable perpendicular to the connection plane or to the coil axis.
  • This arrangement of the insulating slide between insulating walls results in long, labyrinthine creepage and air gaps between the metal parts of the magnet system and the contact spring set.
  • the coupling between armature 18 and slide 23 takes place through (two) extensions 24 of the armature end 18b, which engage in corresponding recesses 25 of the slide.
  • There is also a divider for securing 26 each provided with a retaining tab 26a, which can be bent upwards according to FIG.
  • FIG. 6 Another possibility of coupling is shown in the detailed illustration in FIG. 6.
  • a hook-shaped extension 27 is formed on the armature end 18b, which is hooked into a correspondingly designed recess 28 of the slide 23.
  • Other embodiments of this coupling are also conceivable.
  • the contact spring set arranged in the contact space 9 below the coil has a contact spring 30 attached to a spring support 29, which at its free end is split in a fork shape into two spring legs 31 and 32.
  • a fixed make contact element 33 is arranged above the contact spring 30.
  • a movable main contact piece 34 fastened on the spring leg 31 forms a main contact with an opposite fixed main contact piece 35 of the contact element 33, the contact pieces of which are made of noble metal.
  • a forward contact is formed with a movable forward contact piece 36 on the spring leg 32 and an opposite fixed forward contact piece 37 on the contact element 33, the contact pieces of which, in a known manner, consist of tungsten or a comparable metal.
  • the contact spring support 29 and the fixed NO contact element 33 are inserted from different sides into the base body 1 which is U-shaped in the lower part, namely the spring support 29 from one side, in FIG. 2 from the left, and the NO contact element 33 in Figure 2 from the right.
  • the attachment takes place in each case by pressing into corresponding plug-in grooves.
  • the magnet system 2 is pressed between the side walls 4, 5, 6 and 7 during assembly from above and is additionally fixed by gluing. Subsequent adjustment is therefore not necessary.
  • an insulating film 39 is inserted into a longitudinal body slot 40 at the point where the distance between the magnet system and the contact area is less than 1 * 2 *. This measure creates the three insulating walls required by VDE regulations.
  • the spring support 29 is made of a non-magnetic, electrically highly conductive material, for example a copper alloy. Since the connecting pin 29a of the spring support is in FIG. 1 near the right edge of the base body, while the attachment point of the contact spring. is close to the left edge, the spring support extends almost the entire length of the relay. In this way, the current path of the spring carrier is deliberately designed to be so long between the connecting pin and the spring attachment that opposite current directions in the spring carrier on the one hand and in the contact spring on the other hand can generate electrodynamic forces which increase the make contact force. In this way, very high contact forces are to be generated in the event of a short circuit that reduce the contact resistance and thus reduce the risk of welding.
  • the normally open contact element consists of ferromagnetic material; in addition, it is cranked in its central part 33a (through which the switching current does not flow), so that it is as close as possible to the contact spring 30 in this area.
  • a short-circuit current flowing in the middle spring generates a magnetic field which the ferromagnetic make contact element would like to attract.
  • the contact spring together with its contact piece " 34 is attracted to the fixed normally open contact element 33. The smaller the distance between the contact spring 30 and the normally open contact element 33, the greater the attraction force.
  • the type of contact force amplification has the very special advantage that the attractive force and thus also the contact force increase with increasing contact erosion.
  • the two different types of contact force amplification add up, namely, on the one hand, the repulsion of the contact spring from its current-carrying spring support 29 and, on the other hand, the attraction to the ferromagnetic normally open contact element 33 , the other effect increases at the same time, so that the relay remains fully functional even during a short circuit during its entire service life.
  • the high short-circuit contact forces that occur prevent the contacts from welding due to the resulting low contact resistance.
  • the ferromagnetic normally open contact element 33 also has the advantage that it attracts the arc which arises when the tungsten lead contact 36, 37 is switched on and off. As a result, the main contact 34, 35 made of silver, for example, is less contaminated by the tungsten evaporation.
  • the electrical conductivity of tungsten is namely 3.5 times lower than that of silver with the same contact force.
  • the lower conductivity of the make contact element 33 is taken into account by two parallel connecting pins 33b.
  • a particular advantage of the combination according to the invention of the polarized rocker armature magnet system with the contact set described above also consists in the fact that the contact is closed when the armature arm 18b moves upward.
  • the shorter make contact element can be arranged above the longer spring support 29, between the contact spring 30 and the coil 14. This results in a particularly favorable use of space beneath the coil former, which also enables a particularly compact design of the relay.
  • the relay it would also be conceivable for the relay to be modified in such a way that a further mating contact element would additionally be arranged below the contact spring in order to form a changeover contact.
  • the spring support 29 would then have to be shaped differently.
  • FIGS. 8 to 10 A further embodiment of a relay designed according to the invention is shown in FIGS. 8 to 10. As far as individual parts of this embodiment are not described in detail, they are the same or similar to the previous embodiment.
  • the relay according to FIGS. 8 to 10 has a basic body 41 which is essentially trough-shaped at the top and U-shaped in the lower part, similar to the basic body 1.
  • a magnet system 42 is inserted in the upper part of the basic body. which has a coil former 43 with a winding 44 and two L-shaped core yokes 45 and 46.
  • the core buildings are graded in such a way that they lie one above the other in the central region and thus have larger contact surfaces in the overlap region. In this case, however, they cannot be identical.
  • a three-pole magnet 47 lying on the coil is made thicker in the region of its central pole and is beveled towards the two end poles, so that the armature 48, which is mounted over the central pole and is designed as a flat plate, can optionally rock a movement to one of the can execute both core yokes.
  • the anchor 48 is extrusion-coated in its central region with a plastic ring 49, which forms a bearing pin 50 on each side of the anchor.
  • the armature is rotatably supported on both sides in bearing bores 51 of the base body via these bearing journals 50.
  • An actuating finger 52 is formed on the right end of the armature, which is coupled to a slide 53 and, as in the previous case, moves the front end of the coil and perpendicularly to its axis.
  • a contact spring 54 Via the slide 53, a contact spring 54 is actuated which a spring support 55 is fastened in the base body.
  • a contact piece 56 of the contact spring interacts with a contact piece of a normally open contact element 58, which is also anchored in plug-in grooves in the base body.
  • a base plate 59 forms, together with a cap 60, a housing which surrounds the relay on all sides.

Abstract

PCT No. PCT/DE93/00383 Sec. 371 Date Nov. 8, 1994 Sec. 102(e) Date Nov. 8, 1994 PCT Filed May 3, 1993 PCT Pub. No. WO93/23866 PCT Pub. Date Nov. 25, 1993.A relay has a polarized magnetic system (2) with a three-pole magnet (17) arranged above a coil (14) and rocking armature (18) which actuates a contact spring (30) arranged beneath the coil by means of a frontally arranged slide (23). The contact spring (30) is inserted from one side into the base body, by means of an elongated spring carrier (29), whereas a counter contact element (33) is inserted therein from the opposite side. This relay allows with a compact design long insulating sections between the magnetic system and the set of contacts, as well as a short circuit-resistant design of the set of contacts.

Description

Polarisiertes LeistungsrelaisPolarized power relay
Die Erfindung betrifft ein polarisiertes elektromagneti¬ sches Relais mit einer Spule, einem über der Spule paral¬ lel zur Spulenachse angeordneten, langgestreckten Dauerma¬ gneten, welcher an seinen beiden Enden jeweils gleichna i- ge Endpole und in seiner Mitte einen dazu ungleichnamigen Mittelpol aufweist, mit einem innerhalb der Spule angeord¬ neten Kern, der an beiden Enden über Jochschenkel mit den beiden Enden des Dauermagneten- gekoppelt ist sowie mit ei¬ nem langgestreckten Wippanker, der über dem Mittelpol des Dauermagneten gelagert ist und mit beiden Jochschenkeln je einen Arbeitsluftspalt bildet.The invention relates to a polarized electromagnetic relay with a coil, an elongated permanent magnet arranged above the coil parallel to the coil axis, which has end poles of the same name at both ends and a central pole of the same name in the middle thereof. with a core arranged inside the coil, which is coupled at both ends via yoke legs to the two ends of the permanent magnet, and with an elongated rocker armature, which is supported over the central pole of the permanent magnet and forms a working air gap with both yoke legs.
Ein derartiges Relais mit einem -;-ι-eipoligen Magneten und einem oberhalb diese Magneten gelagerten Wippanker ist beispielsweise aus der EP-A-0 197 391 bekannt. Dort ist allerdings auch das Kontaktsystem oberhalb der Spule im Bereich des Ankers angeordnet, wobei die zu beiden Seiten des Ankers angeordneten Kontaktfedern direkt mit diesem verbunden und unmittelbar mit dem Anker ihre Schaltbewe- gungen ausführen.Such a relay with a -; - ι-pole magnet and a rocker armature mounted above these magnets is known for example from EP-A-0 197 391. There, however, the contact system is also arranged above the coil in the area of the armature, the contact springs arranged on both sides of the armature being connected directly to the armature and executing their switching movements directly with the armature.
Das gleiche Magnetsystem mit einem dreipoligen Dauer¬ magneten und einem Wippanker ist auch . bereits in der DE-A-21 48 377 verwendet. Allerdings sind dort Dauermagnet und Anker seitlich von der Spule angeordnet, und an den Ankerenden befestigte Betätigungsstifte wirken auf Kon¬ taktfedern, die unterhalb der Spule liegen und in einer zur Grundebene des Relais parallelen Ebene bewegbar sind.The same magnet system with a three-pole permanent magnet and a rocker armature is also. already used in DE-A-21 48 377. However, the permanent magnet and armature are arranged there to the side of the coil, and actuating pins attached to the armature ends act on contact springs which lie below the coil and can be moved in a plane parallel to the base plane of the relay.
Diesen bekannten Relais ist- gemeinsam, daß die Kontaktele¬ mente mit geringen Abständen im Bereich des Ankers und des Magnetsystems liegen. Damit sind diese Systeme nur zum Schalten von geringen Strömen geeignet.These known relays have in common that the contact elements with small distances in the area of the armature and the Magnet system lie. These systems are therefore only suitable for switching low currents.
Aufgabe der vorliegenden Erfindung ist es, die Vorteile des eingangs beschriebenen polarisierten Systems, nämlich die hohe Empfindlichkeit bei wahlweise einstellbarer mono¬ stabiler oder bistabiler Schaltcharakteristik, und die ge¬ ringe Empfindlichkeit des mittig gelagerten Ankers gegen Erschütterungen, zum Schalten höherer Ströme und Spannun- gen auszunutzen.It is an object of the present invention to take advantage of the polarized system described at the outset, namely the high sensitivity with selectively adjustable monostable or bistable switching characteristics, and the low sensitivity of the centrally positioned armature to shocks, for switching higher currents and voltages to take advantage of.
Erfindungsgemäß wird dieses Ziel bei einem Relais der ein¬ gangs genannten Art dadurch erreicht, daß unterhalb der Spule ein Kontaktsatz mit mindestens einer annähernd zur Spulenachse angeordneten Kontaktfeder und mindestens einem feststehenden Kontaktelement angeordnet ist und daß vor einer Stirnseite der Spule ein senkrecht zur Spulenachse bewegbarer. Schieber aus Isolierstoff angeordnet ist, der einerseits mit einem beweglichen Ende des Ankers und ande- rerseits mit einem beweglichen Ende der Kontaktfeder ge¬ koppelt ist.According to the invention, this object is achieved in a relay of the type mentioned in the introduction in that a contact set with at least one contact spring arranged at least approximately to the coil axis and at least one fixed contact element is arranged underneath the coil, and in front of one end of the coil a movable one perpendicular to the coil axis. Slider made of insulating material is arranged, which is coupled on the one hand to a movable end of the armature and on the other hand to a movable end of the contact spring.
Bei der Erfindung sind also die Kontaktelemente an der Un¬ terseite des Relais bereits in der Nähe der Anschlußseite angeordnet, so daß kurze Anschlußelemente auch beim Führen hoher Ströme keine zu hohe Verlustwärme erzeugen. Da sich der Anker mit den Eisenteilen des Magnetsystems entgegen¬ gesetzt zu "den Kontaktelementen an der Oberseite der Spule befindet, ergibt sich bereits durch die räumliche Entfer- nung eine große Isolierstrecke zwischen Kontaktsystem und Magnetsystem. Die Spule und das gesamte Magnetsystem kön¬ nen überdies durch entsprechende konstruktive Ausgestal¬ tung eines Grundkörpers unter Schaffung langer Isolier¬ strecken gegenüber dem Kontaktsystem abgeschirmt werden. Ein solcher Grundkörper, in dem beispielsweise der Kon¬ taktsatz mit zur Unterseite herausgeführten Anschlußele- enten angeordnet ist, bildet vorzugsweise eine Trennwand zwischen Kontaktsatz und Spule, an der nach unten ange¬ formte Seitenwände den Kontaktsatz und/oder nach oben an¬ geformte Seitenwände das Magnetsystem U-förmig bzw. wan- nenförmig umgeben. Diese Trennwand kann zusätzlich einen seitlich offenen Schlitz aufweisen, in welchen eine Iso¬ lierstoffplatte eingeschoben ist. Auf diese Weise erhält man drei übereinanderliegende Isolierstoffwände zwischen Kontaktsatz und Spule, was die für bestimmte Anwendungen geforderte Spannungsfestigkeit gewährleistet. Der an einer Stirnseite der- Spule angeordnete Isolierstoff-Schieber, der eine Verbindung zwischen Anker und Kontaktsystem her¬ stellt", kann durch entsprechende Überlappungen mit dem Grundkörper • labyrinthartige Isolierstrecken schaffen. Zweckmäßigerweise besitzt der Schieber jeweils Ausnehmun¬ gen, in welche deformierbare Enden der Kontaktfeder einer¬ seits und des Ankers andererseits eingreifen.In the invention, therefore, the contact elements on the underside of the relay are already arranged in the vicinity of the connection side, so that short connection elements do not generate excessive heat loss even when carrying high currents. Since the anchor with the iron parts of the magnet system entgegen¬ set to "is the contact elements on the upper side of the coil, is obtained already by the spatial distance-a large insulating distance between the contact system and the magnet system. The coil and the entire magnet system kön¬ NEN moreover are shielded from the contact system by means of a corresponding constructive design of a base body with the creation of long insulating sections. Such a base body in which, for example, the contact set with connection elements led out to the underside is preferably arranged, forms a partition between the contact set and the coil, on which downwardly formed side walls surround the contact set and / or upwardly formed side walls surround the magnet system in a U-shaped or trough-shaped manner. This partition can additionally have a laterally open slot into which an insulating plate is inserted. In this way, three superposed insulating material walls between the contact set and the coil are obtained, which ensures the dielectric strength required for certain applications. The arranged on a front side DER coil insulation-shifter which provides a connection between the armature and the contact system her¬ ", can by appropriate overlaps with the base body • provide labyrinth-like insulating clearances. Advantageously, has the slider respectively Ausnehmun¬ gene into which deformable ends of the Engage contact spring on the one hand and the armature on the other hand.
Die Erfindung wird nachfolgend an Ausführungsbeispielen anhand der Zeichnung näher erläutert. Es zeigenThe invention is explained in more detail below using exemplary embodiments with reference to the drawing. Show it
Figuren 1 bis 3 eine erste Ausführungsform eines erfin¬ dungsgemäß gestalteten Relais in drei verschiedenen Schnittansichten,FIGS. 1 to 3 show a first embodiment of a relay designed according to the invention in three different sectional views,
Figur 4 eine Explosionsdarstellung des Relais von Figur 1 bis 3 mit einer zusätzlichen Darstellung des vormontierten Magnetsystems,FIG. 4 shows an exploded illustration of the relay from FIGS. 1 to 3 with an additional illustration of the preassembled magnet system,
Figur 5 und 6 zwei gegenüber Figur 1 abgewandelte Details der Ankopplung zwischen Anker und Schieber,FIGS. 5 and 6 show two details of the coupling between armature and slide modified in comparison to FIG.
Figur 7 eine Ausführungsform der Ankopplung zwischen Kon¬ taktfeder und Schieber,FIG. 7 shows an embodiment of the coupling between the contact spring and slide,
Figur 8 bis 10 eine zweite Ausführungsform eines erfin¬ dungsgemäß gestalteten Relais in drei Schnittansichten. Das in den Figuren 1 bis 4 dargestellte Relais besitzt ei¬ nen Grundkörper 1 mit einer parallel zur Bodenseite ange¬ ordneten mittleren Trennwand 3, an der nach oben angeform¬ te Seitenwände 4 und 5 sowie 6 und 7 eine wannenförmige Aufnahme für ein von oben einsteckbares Magnetsystem 2 bilden. Nach unten umschließt die Trennwand 3 zusammen mit einer parallelen Bodenwand 8 und einer Verlängerung der Seitenwand 4 angenähert U-förmig einen Kontaktraum 9, der in Figur 1 nach rechts offen ist. Der Grundkörper 1 bildet zusammen mit einer von oben aufsetzbaren Kappe 10 ein ringsum geschlossenes Gehäuse.8 to 10 show a second embodiment of a relay designed according to the invention in three sectional views. The relay shown in FIGS. 1 to 4 has a base body 1 with a central partition 3 arranged parallel to the bottom side, on the side walls 4 and 5 and 6 and 7 which are formed upwards, a trough-shaped receptacle for a plug-in which can be inserted from above Form magnet system 2. At the bottom, the partition wall 3, together with a parallel bottom wall 8 and an extension of the side wall 4, encloses an approximately U-shaped contact space 9, which is open to the right in FIG. 1. The base body 1, together with a cap 10 which can be fitted from above, forms an all-round closed housing.
Das Magnetsystem 2 besitzt einen rohrförmigen Spulenkörper 11 mit endseitigen Flanschen 12 und 13, zwischen denen ei- ne Wicklung 14 angeordnet ist. In die rohrförmige Öffnung des Spulenkörpers 11 "ist von beiden Seiten je ein Kernjoch 15 bzw. 16 mit einem Kernschenkel 15a bzw. 16a einge¬ steckt, so daß die beiden rechtwinkelig abgebogenen Joch¬ schenkel 15b bzw. 16b parallel nach oben stehen. Zwischen diesen beiden Jochschenkeln ist oberhalb der Spule und parallel zur Spulenachse ein stabfδrmiger, dreipolig auf- magnetisierter Dauermagnet 17 angeordnet, der im BereichThe magnet system 2 has a tubular coil body 11 with end flanges 12 and 13, between which a winding 14 is arranged. A core yoke 15 or 16 with a core leg 15a or 16a is inserted into the tubular opening of the coil former 11 "from both sides, so that the two yoke legs 15b and 16b bent at right angles are parallel and upward. Between them Both yoke legs are arranged above the coil and parallel to the coil axis, a rod-shaped, three-pole magnetized permanent magnet 17, which in the area
'der beiden Jochschenkel jeweils gleichnamige Pole, z. B. 'of the two yoke legs poles of the same name, z. B.
S, und im Mittelbereich einen dazu ungleichnamigen Pol, z. B. " N, aufweist. Der Dauermagnet besteht beispielsweise aus einer AlNiCo-Legierung und kann in diesem Fall einfach aus einem Band geschnitten werden. Durch thermoplastische Verformung der Spulenflansche kann der Magnet am Spulen¬ körper befestigt werden. Auch die Kernjoche 15 und 16 wer- den auf geeignete Weise am Spulenkörper fixiert.S, and a pole of the same name, z. B. "N has. The permanent magnet consists for example of an AlNiCo alloy and can easily be cut in this case of a tape. By thermoplastic deformation of the reel flanges, the magnet may be attached body at Spulen¬. Also, the core yokes 15 and 16 who - The fixed in a suitable manner on the bobbin.
Aus Figur 4 ist zu erkennen, daß die Kernschenkel 15a und 16a so abgestuft ausgebildet sind, daß sie nebeneinander¬ liegend einen großen Überlappungsbereich bilden. Auf diese Weise können die beiden Kernjoche identisch ausgebildet sein und trotzdem einen guten Flußübergang zwischen beiden Teilen ermöglichen. Die Anzahl der Teile und Fertigungs¬ schritte wird somit verringert.It can be seen from FIG. 4 that the core legs 15a and 16a are designed so that they form a large overlap area lying next to one another. In this way, the two core yokes can be identical and still have a good flow transition between the two Allow sharing. The number of parts and manufacturing steps is thus reduced.
Auf dem mittleren Pol N des Dauermagneten 17 ist ein als Wippe ausgebildeter Anker 18 gelagert. Dieser Anker ist in seinem Mittelbereich leicht V-förmig zum Dauermagneten hin geknickt, so daß die Enden 18a und 18b jeweils einen Luft¬ spalt mit dem entsprechenden Jochschenkel 15b bzw. 16b bilden. Zur Lagerung des Ankers dient eine vorzugsweise aus ferromagnetischem Material bestehende Lagerfeder 19, welche an der Unterseite des Ankers mit Nietungen 20 an diesem befestigt ist und mit seitlich abgebogenen Rastlap¬ pen 21 in entsprechenden Ausnehmungen des Dauermagneten 17 durch Rastung befestigt ist. Die Lagerfeder 19 bildet eine Torsionsbaπdlagerung für den Anker. Durch diese Anordnung und Form der Lagerfeder wird sichergestellt, daß der Anker reibfrei gelagert wird und daß zugleich ein guter Flu߬ übergang vom Dauermagneten 17 zum Anker 18 erfolgt. Von oben wird der Anker außerdem durch eine an der Kappe 10 aπgefor te Rippe 22 in der Lagerung gehalten bzw. gesi¬ chert. Da der Anker in seinem Schwerpunkt gelagert ist, ist er in seinem Schaltzustand weitgehend unempfindlich gegen Erschütterungen.An armature 18 designed as a rocker is mounted on the central pole N of the permanent magnet 17. This anchor is slightly bent in a V-shape towards the permanent magnet in its central region, so that the ends 18a and 18b each form an air gap with the corresponding yoke legs 15b and 16b. A bearing spring 19, which is preferably made of ferromagnetic material, is used to mount the armature, which is fastened to the underside of the armature with rivets 20 and is fastened with correspondingly bent latching flaps 21 in corresponding recesses in the permanent magnet 17 by latching. The bearing spring 19 forms a Torsionsbaπdlagerung for the armature. This arrangement and shape of the bearing spring ensures that the armature is mounted without friction and that at the same time there is a good flow transition from the permanent magnet 17 to the armature 18. From above, the anchor is also held or secured in the bearing by a rib 22 formed on the cap 10. Since the armature is supported in its center of gravity, it is largely insensitive to vibrations in its switching state.
Die Ankerbewegung wird über einen Schieber 23 auf einen noch zu beschreibenden Kontaktfedersatz übertragen, wobei dieser Schieber zwischen der Seitenwand 5 des Grundkörpers und einer Seitenwand der Kappe 10 angeordnet und senkrecht zur Anschlußebene bzw. zur Spulenachse bewegbar ist. Diese Anordnung des isolierenden Schiebers zwischen isolierenden Wänden ergibt lange, labyrinthartige Kriech- und Luft¬ strecken zwischen den Metallteilen des Magnetsystems und dem Kontaktfedersatz. Die Kopplung zwischen Anker 18 und Schieber 23 erfolgt durch (zwei) Fortsätze 24 des Ankeren- des 18b, die in entsprechende Ausnehmungen 25 des Schie¬ bers eingreifen. Zur Sicherung ist außerdem ein Trennblech 26 mit jeweils einem Haltelappen 26a versehen, der gemäß Figur 1 nach oben oder gemäß der Detaildarstellung in Fi¬ gur 5 nach unten abgebogen sein kann. Eine andere Möglich¬ keit der Kopplung ist in der Detaildarstellung von Figur 6 gezeigt. In diesem Fall ist am Ankerende 18b jeweils ein hakenförmiger Fortsatz 27 angeformt, der in eine entspre¬ chend gestaltete Ausnehmung 28 des Schiebers 23 eingehängt wird. Auch -andere Ausführungsformen dieser Kopplung sind denkbar.The armature movement is transmitted via a slide 23 to a contact spring set to be described, this slide being arranged between the side wall 5 of the base body and a side wall of the cap 10 and being movable perpendicular to the connection plane or to the coil axis. This arrangement of the insulating slide between insulating walls results in long, labyrinthine creepage and air gaps between the metal parts of the magnet system and the contact spring set. The coupling between armature 18 and slide 23 takes place through (two) extensions 24 of the armature end 18b, which engage in corresponding recesses 25 of the slide. There is also a divider for securing 26 each provided with a retaining tab 26a, which can be bent upwards according to FIG. 1 or downwards according to the detailed illustration in FIG. 5. Another possibility of coupling is shown in the detailed illustration in FIG. 6. In this case, a hook-shaped extension 27 is formed on the armature end 18b, which is hooked into a correspondingly designed recess 28 of the slide 23. Other embodiments of this coupling are also conceivable.
Der im Kontaktraum 9 unterhalb der Spule angeordnete Kon¬ taktfedersatz besitzt eine an einem Federträger 29 befe¬ stigte Kontaktfeder 30, welche an ihrem freien Ende gabel¬ förmig in zwei Federschenkel 31 und 32 aufgespalten ist. Oberhalb der Kontaktfeder 30 ist ein feststehendes Schlie¬ ßerkontaktelement 33 angeordnet. Dabei bildet ein auf dem Federschenkel 31 befestigtes bewegliches Hauptkontaktstück 34 mit einem gegenüberliegenden feststehenden Hauptkon¬ taktstück 35 des Kontaktelementes 33 einen Hauptkontakt, dessen Kontaktstücke aus Edelmetall bestehen. Zusätzlich ist mit einem beweglichen Vorlaufkontaktstück 36 auf dem Federschenkel 32 und einem gegenüberliegenden feststehen¬ den Vorlaufkontaktstück 37 am Kontaktelement 33 ein Vor¬ laufkontakt gebildet, dessen Kontaktstücke in bekannter Weise aus Wolfram oder einem vergleichbaren Metall beste¬ hen.The contact spring set arranged in the contact space 9 below the coil has a contact spring 30 attached to a spring support 29, which at its free end is split in a fork shape into two spring legs 31 and 32. A fixed make contact element 33 is arranged above the contact spring 30. In this case, a movable main contact piece 34 fastened on the spring leg 31 forms a main contact with an opposite fixed main contact piece 35 of the contact element 33, the contact pieces of which are made of noble metal. In addition, a forward contact is formed with a movable forward contact piece 36 on the spring leg 32 and an opposite fixed forward contact piece 37 on the contact element 33, the contact pieces of which, in a known manner, consist of tungsten or a comparable metal.
Bei der Montage werden der Kontaktfederträger 29 und das feststehende Schließerkontaktelement 33 von verschiedenen Seiten in den im unteren Teil U-förmigen Grundkörper 1 eingesteckt, und zwar der Federträger 29 von der einen Seite, in Figur 2 von links, und das Schließerkontaktele¬ ment 33 in Figur 2 von rechts. Die Befestigung erfolgt je¬ weils durch Einpressen in entsprechende Stecknuten.During assembly, the contact spring support 29 and the fixed NO contact element 33 are inserted from different sides into the base body 1 which is U-shaped in the lower part, namely the spring support 29 from one side, in FIG. 2 from the left, and the NO contact element 33 in Figure 2 from the right. The attachment takes place in each case by pressing into corresponding plug-in grooves.
Durch zusätzliches Verdrallen des Anschlußstifts 29a er- reicht man ein sattes Aufliegen des Federträgers 29 auf der Bodenwand 8. Durch diese Maßnahme ergibt sich für den Kontaktabstand ein enges Toleranzfeld, das die Vorausset¬ zung schafft, geringe Streuungen der Relaiskennwerte zu erhalten.By additionally twisting the connecting pin 29a enough to rest the spring support 29 on the bottom wall 8. This measure results in a narrow tolerance field for the contact spacing, which creates the prerequisite for obtaining low scattering of the relay characteristic values.
Weiterhin wird bei der Montage der Schieber 23 mit seinem unteren Ende mit einer Ausnehmung 38 über die hakenförmig gestalteten Enden 31a und 32a der Kontaktfeder gesteckt und verrastet. Dies ist in Figur 7 gezeigt.Furthermore, during assembly of the slide 23, its lower end with a recess 38 is inserted and locked over the hook-shaped ends 31a and 32a of the contact spring. This is shown in Figure 7.
Im übrigen wird das Magnetsystem 2 bei der Montage von oben maßgenau zwischen die Seitenwände 4, 5, 6 und 7 ein¬ gepreßt und zusätzlich durch Klebung fixiert. Damit ent- fällt eine nachträgliche Justierung. Zur zusätzlichen Ver¬ besserung der Isolation zwischen Magnetsystem und Kontakt¬ raum wird an der Stelle, wo der Abstand zwischen Magnetsy¬ stem und Kontaktbereich kleiner aϊ^ *-2 mm ist, eine isolie¬ rende Folie 39 in einen längsseitigen Grundkörperschlitz 40 eingeschoben. Durch diese Maßnahme entstehen die nach VDE-Vorschriften geforderten drei Isolierwände.Moreover, the magnet system 2 is pressed between the side walls 4, 5, 6 and 7 during assembly from above and is additionally fixed by gluing. Subsequent adjustment is therefore not necessary. To additionally improve the insulation between the magnet system and the contact space, an insulating film 39 is inserted into a longitudinal body slot 40 at the point where the distance between the magnet system and the contact area is less than 1 * 2 *. This measure creates the three insulating walls required by VDE regulations.
Im vorliegenden Fall ist der Federträger 29 aus einem un¬ magnetischen, elektrisch gut leitenden Werkstoff, bei- spielsweise einer Kupferlegierung, hergestellt. Da der An¬ schlußstift 29a des Federträgers sich in Figur 1 in der Nähe des rechten Randes des Grundkörpers befindet, während die Befestigungsstelle der Kontaktfeder . nahe am linken Rand liegt, erstreckt sich der Federträger fast über die gesamte Länge des Relais. Der Strompfad des Federträgers ist auf diese Weise zwischen Anschlußstift und Federbefe¬ stigung bewußt so lang gestaltet, damit gegenläufige Stromrichtungen im Federträger einerseits und in der Kon¬ taktfeder andererseits elektrodynamische Kräfte erzeugen können, die die Schließerkontaktkraft erhöhen. Damit sol¬ len bei einem Kurzschluß sehr hohe Kontaktkräfte erzeugt werden, die den Kontaktübergangswiderstand verringern uno damit die Verschweißgefahr vermindern.In the present case, the spring support 29 is made of a non-magnetic, electrically highly conductive material, for example a copper alloy. Since the connecting pin 29a of the spring support is in FIG. 1 near the right edge of the base body, while the attachment point of the contact spring. is close to the left edge, the spring support extends almost the entire length of the relay. In this way, the current path of the spring carrier is deliberately designed to be so long between the connecting pin and the spring attachment that opposite current directions in the spring carrier on the one hand and in the contact spring on the other hand can generate electrodynamic forces which increase the make contact force. In this way, very high contact forces are to be generated in the event of a short circuit that reduce the contact resistance and thus reduce the risk of welding.
Allerdings könnte die Kontaktkrafterhöhung aufgrund der oben genannten gegenläufigen Stromrichtungen zwischen Fe¬ derträger und Feder bei längerer .Lebensdauer des Relais unter Umständen nicht ausreichen, weil .sich der Abstand zwischen dem Federträger 29 und der Kontaktfeder 30 im Laufe der Zeit wegen des Kontaktabbrandes an den Kontakt- stücken zunehmend vergrößert. Durch diesen zunehmenden Ab- brand sind auch die Kontaktkräfte, die vom Magnetsystem über den Schieber auf die Kontaktfeder ausgeübt werden, ebenfalls reduziert. Somit bestünde bei einem Kurzschluß unter Umständen trotzdem die Gefahr eines Funktionsaus- falls, wenn das Relais eine größere Zahl von Schaltspielen ausgeführt hat.However, the increase in contact force due to the opposite current directions between spring carrier and spring mentioned above may not be sufficient if the relay has a longer service life, because the distance between the spring carrier 29 and the contact spring 30 increases over time due to the contact erosion at the contact - pieces increasingly enlarged. As a result of this increasing fire, the contact forces exerted by the magnet system on the slide on the contact spring are also reduced. Thus, in the event of a short circuit, there may still be a risk of a functional failure if the relay has carried out a large number of switching cycles.
Um dieser Gefahr zu begegnen, besteht im vorliegenden Fall das Schließerkontaktelement aus ferromagnetischem Werk- stoff; außerdem ist es in seinem (nicht vom Schaltstrom durchflossenen) Mittelteil 33a abgekröpft, so daß es in diesem Bereich möglichst nahe an der Kontaktfeder 30 liegt. Dies hat folgenden Effekt: Ein in der Mittelfeder fließender Kurzschlußstrom erzeugt ein magnetisches Feld, das das ferromagnetische Schließerkpntaktelement anziehen möchte. Da dieses aber im Grundkörper fest verankert ist, wird umgekehrt die Kontaktfeder zusammen mit ihrem Kon¬ taktstück "34 an das feststehende Schließerkontaktelement 33 angezogen. Die Anziehungskraft wird umso größer, je kleiner der Abstand zwischen der Kontaktfeder 30 und dem Schließerkontaktelement 33 ist. Diese zusätzliche Art der Kontaktkraftverstärkung hat im Kurzschlußfall den ganz be¬ sonderen Vorteil, daß sich die Anziehungskraft und damit auch die Kontaktkraft mit zunehmendem Kontaktabbrand ver- größert. So addieren sich bei der hier vorliegenden Kombination die beiden unterschiedlichen Arten der Kontaktkraftverstär¬ kung, nämlich einerseits die Abstoßung der Kontaktfeder von ihrem stromdurchflossenen Federträger 29 und anderer- seits die Anziehung an das ferromagnetische Schließerkon¬ taktelement 33. Wenn bei Kontaktabbrand der eine Effekt geringer wird, vergrößert sich gleichzeitig der andere Ef¬ fekt, so daß das Relais während seiner gesamen Lebensdauer auch bei einem Kurzschluß voll funktionsfähig bleibt. Die hohen auftretenden Kurzschlußkontaktkräfte verhindern we¬ gen des entstehenden niedrigen Kontaktwiderstandes ein Verschweißen der Kontakte.In order to counter this danger, the normally open contact element consists of ferromagnetic material; in addition, it is cranked in its central part 33a (through which the switching current does not flow), so that it is as close as possible to the contact spring 30 in this area. This has the following effect: A short-circuit current flowing in the middle spring generates a magnetic field which the ferromagnetic make contact element would like to attract. However, since this is firmly anchored in the base body, conversely the contact spring together with its contact piece " 34 is attracted to the fixed normally open contact element 33. The smaller the distance between the contact spring 30 and the normally open contact element 33, the greater the attraction force. This additional one In the event of a short circuit, the type of contact force amplification has the very special advantage that the attractive force and thus also the contact force increase with increasing contact erosion. Thus, in the present combination, the two different types of contact force amplification add up, namely, on the one hand, the repulsion of the contact spring from its current-carrying spring support 29 and, on the other hand, the attraction to the ferromagnetic normally open contact element 33 , the other effect increases at the same time, so that the relay remains fully functional even during a short circuit during its entire service life. The high short-circuit contact forces that occur prevent the contacts from welding due to the resulting low contact resistance.
Das ferromagnetische Schließerkontaktelement 33 hat außer- dem noch den Vorteil, daß es den Lichtbogen anzieht, der beim Wolfram-Vorlaufkontakt 36, 37 beim Ein- und Ausschal¬ ten entsteht. Dadurch wird der beispielsweise aus Silber bestehende Hauptkontakt 34, 35 durch die Wolfram-Verdamp¬ fung weniger stark verunreinigt. Die elektrische Leitfä- higkeit von Wolfram ist nämlich gegenüber der von Silber bei gleicher Kontaktkraft um den Faktor 3,5 niedriger. Der geringeren Leitfähigkeit des Schließerkontaktelementes 33 wird übrigens durch zwei parallele Anschlußstifte 33b Rechnung getragen.The ferromagnetic normally open contact element 33 also has the advantage that it attracts the arc which arises when the tungsten lead contact 36, 37 is switched on and off. As a result, the main contact 34, 35 made of silver, for example, is less contaminated by the tungsten evaporation. The electrical conductivity of tungsten is namely 3.5 times lower than that of silver with the same contact force. The lower conductivity of the make contact element 33 is taken into account by two parallel connecting pins 33b.
Ein besonderer Vorteil der erfindungsgemäßen Kombination des polarisierten Wippanker-Magnetsystems mit dem oben be¬ schriebenen Kontaktsatz besteht auch darin, daß der Kon¬ takt mit einer Bewegung des Ankerarms 18b nach oben ge- schlössen wird. Dadurch kann das kürzere Schließerkontakt¬ element oberhalb des längeren Federtragers 29, zwischen der Kontaktfeder 30 und der Spule 14 angeordnet werden. Auf diese Weise ergibt sich eine besonders günstige Raum¬ ausnutzung unterhalb des Spulenkörpers, wodurch auch eine besonders kompakte Bauform des Relais ermöglicht wird. Es wäre aber auch eine Abwandlung des Relais in der Weise denkbar, daß zusätzlich unterhalb der Kontaktfeder ein weiteres Gegenkontaktelement angeordnet würde, um so einen Umschaltkontakt zu bilden. Der Federträger 29 müßte dann entsprechend anders geformt werden.A particular advantage of the combination according to the invention of the polarized rocker armature magnet system with the contact set described above also consists in the fact that the contact is closed when the armature arm 18b moves upward. As a result, the shorter make contact element can be arranged above the longer spring support 29, between the contact spring 30 and the coil 14. This results in a particularly favorable use of space beneath the coil former, which also enables a particularly compact design of the relay. However, it would also be conceivable for the relay to be modified in such a way that a further mating contact element would additionally be arranged below the contact spring in order to form a changeover contact. The spring support 29 would then have to be shaped differently.
In den Figuren 8 bis 10 ist noch eine weitere Ausführungs¬ form eines erfindungsgemäß gestalteten Relais gezeigt. So¬ weit einzelne Teile dieses Ausführungsbeispiels nicht im einzelnen beschrieben werden, sind sie gleich oder ähnlich wie bei dem vorherigen Ausführungsbeispiel.A further embodiment of a relay designed according to the invention is shown in FIGS. 8 to 10. As far as individual parts of this embodiment are not described in detail, they are the same or similar to the previous embodiment.
Das Relais gemäß Figuren 8 bis 10 besitzt einen Grundkör¬ per 41, der nach- oben im wesentlichen wannenför ig und im unteren Teil U-förmig gestaltet ist, ähnlich wie der Grundkörper 1. In den oberen Teil des Grundkörpers ist ein Magnetsystem 42 eingesetzt, welches einen Spulenkörper 43 mit einer Wicklung 44 und zwei L-förmigen Kernjochen 45 und 46 aufweist. Die Kernjdche sind in diesem Fall so ab- gestuft, daß sie im Mittelbereich übereinanderliegen und auf diese Weise größere Berührungsflächen im Übεrlappungs- bereich besitzen. Sie können in diesem Fall allerdings nicht identisch ausgebildet sein. Ein auf der Spule lie¬ gender Dreipolmagnet 47 ist im Bereich seines Mittelpols dicker ausgeführt und zu den beiden Endpolen hin abge¬ schrägt,- so daß der über den Mittelpol gelagerte, als ebe¬ ne Platte ausgeführte Anker 48 eine Wippbewegung jeweils wahlweise zu einem der beiden Kernjoche hin ausführen kann.The relay according to FIGS. 8 to 10 has a basic body 41 which is essentially trough-shaped at the top and U-shaped in the lower part, similar to the basic body 1. A magnet system 42 is inserted in the upper part of the basic body. which has a coil former 43 with a winding 44 and two L-shaped core yokes 45 and 46. In this case, the core buildings are graded in such a way that they lie one above the other in the central region and thus have larger contact surfaces in the overlap region. In this case, however, they cannot be identical. A three-pole magnet 47 lying on the coil is made thicker in the region of its central pole and is beveled towards the two end poles, so that the armature 48, which is mounted over the central pole and is designed as a flat plate, can optionally rock a movement to one of the can execute both core yokes.
Der Anker 48 ist in seinem Mittelbereich mit einem Kunst¬ stoffring 49 umspritzt, welcher zu beiden Seiten des An¬ kers jeweils einen Lagerzapfen 50 bildet. Über diese La¬ gerzapfen 50 ist der Anker beiderseits in Lagerbohrungen 51 des Grundkörpers drehbar gelagert. Am rechten Ende des Ankers ist ein Betätigungsfinger 52 angeformt, der mit einem Schieber 53 gekoppelt ist und diesen wie im vorhergehenden Fall stirnseitig voτ der Spu¬ le und senkrecht zu deren Achse bewegt.- Über den Schieber 53 wird eine Kontaktfeder 54 betätigt, welche über einen Federträger 55 im Grundkörper befestigt ist. Ein Kontakt¬ stück 56 der Kontaktfeder wirkt mit einem Kontaktstück ei¬ nes Schließerkontaktelementes 58 zusammen, welches eben¬ falls in Stecknuten des Grundkörpers verankert ist. Eine Bodenplatte 59 bildet zusammen mit einer Kappe 60 ein Ge¬ häuse, welches das Relais allseitig umschließt.The anchor 48 is extrusion-coated in its central region with a plastic ring 49, which forms a bearing pin 50 on each side of the anchor. The armature is rotatably supported on both sides in bearing bores 51 of the base body via these bearing journals 50. An actuating finger 52 is formed on the right end of the armature, which is coupled to a slide 53 and, as in the previous case, moves the front end of the coil and perpendicularly to its axis. Via the slide 53, a contact spring 54 is actuated which a spring support 55 is fastened in the base body. A contact piece 56 of the contact spring interacts with a contact piece of a normally open contact element 58, which is also anchored in plug-in grooves in the base body. A base plate 59 forms, together with a cap 60, a housing which surrounds the relay on all sides.
Selbstverständlich sind auch verschiedene Kombinationen einzelner Elemente aus den beiden beschriebenen Ausfüh- rungsbeispielen möglich, insbesondere was die Gestaltung der Kontaktelemente und die Ausgestaltung als Öffner-, Schließer- oder Umschaltkontakt betrifft. Of course, different combinations of individual elements from the two exemplary embodiments described are also possible, in particular as regards the design of the contact elements and the configuration as normally closed, normally open or changeover contact.

Claims

Patentansprüche Claims
1. Polarisiertes elektromagnetisches Relais mit einer Spu¬ le (11, 14; 43, 44), einem über der 5pule parallel zur Spulenachse angeordneten, langgestreckten Dauermagneten (17; 47), welcher an seinen beiden Enden jeweils gleichna¬ mige Endpole und in seiner Mitte einen dazu ungleichnami¬ gen Mittelpol aufweist, einem innerhalb der Spule angeordneten Kern (15, 16; 45, 46) der an beiden Enden über Jochschenkel (15b, 16b; 45b, 46b) mit den beiden Enden des Dauermagneten gekoppelt ist, sowie mit einem langgestreckten Wippanker (18; 48), der über dem Mittelpol des Dauermagneten gelagert ist und mit beiden Jochschenkeln (15b, 16b; 45b, 46b) je einen Arbeitsluft¬ spalt bildet, d a d u r c h^ g e k e n n z e i c h n e t , daß unterhalb der Spule (11, 14; 43, 44) ein Kontaktsatz mit mindestens einer annähernd parallel zur Spulenachse angeordneten Kontaktfeder (30; 54) und mindestens einem feststehenden Kontaktelement (33; 58) angeordnet ist und daß vor einer Stirnseite der Spule (11, 14; 43, 44) ein senkrecht zur Spulenachse bewegbarer Schieber (23; 53) aus Isolierstoff angeordnet ist, der einerseits mit einem be- weglichen Ende des Ankers und andererseits mit einem be¬ weglichen Ende der-Kontaktfeder gekoppelt ist.1. Polarized electromagnetic relay with a coil (11, 14; 43, 44), an elongated permanent magnet (17; 47) arranged above the 5-coil parallel to the coil axis, which has respective end poles at its two ends and in it The center has a central pole which is not the same, a core (15, 16; 45, 46) arranged inside the coil, which is coupled at both ends to the two ends of the permanent magnet via yoke legs (15b, 16b; 45b, 46b), and with an elongated rocking armature (18; 48) which is mounted above the center pole of the permanent magnet and having two yoke legs (15b, 16b; 45b, 46b) forms a respective Arbeitsluft¬ gap, characterized ^ characterized in that below the coil (11, 14; 43, 44) a contact set with at least one contact spring (30; 54) arranged approximately parallel to the coil axis and at least one fixed contact element (33; 58) is arranged and that a lower one in front of an end face of the coil (11, 14; 43, 44) Slider (23; 53) made of insulating material, which is coupled on the one hand to a movable end of the armature and on the other hand to a movable end of the contact spring.
2. Relais nach Anspruch 1, d a d u r c h g e k e n n ¬ z e i c h n e t , daß der Kontaktsatz in einem Grundkör- per (1; 41) aus -Isolierstoff mit zur Unterseite herausge¬ führten Anschlußelementen angeordnet und durch diesen ge¬ genüber dem Magnetsystem Schachtel- bzw. labyrinthartig abgeschirmt ist.2. Relay according to claim 1, characterized in that the contact set is arranged in a base body (1; 41) made of insulating material with connection elements led out to the underside and is shielded by this against the magnet system in a box-like or labyrinth-like manner .
3. Relais nach Anspruch 2, d a d u r c h g e k e n n ¬ z e i c h n e t , daß der Grundkörper (1; 41) eine Trenn- wand (3) zwischen Kontaktsatz und Spule bildet, an der nach oben angeformte Seitenwände (4, 5, 6, 7) das Magnet¬ system und/oder nach unten angeformte Seitenwände den Kon¬ taktsatz umgeben.3. Relay according to claim 2, characterized in that the base body (1; 41) has a separating wall (3) forms between the contact set and the coil, on which upwardly formed side walls (4, 5, 6, 7) the magnet system and / or downwardly formed side walls surround the contact set.
4. Relais nach Anspruch 3, d a d u r c h g e k e n n ¬ z e i c h n e t , daß in der Trennwand (3) ein Schlitz (40) vorgesehen ist, in den von einer Seite her eine_ Iso¬ lierstoffplatte (39) eingesteckt ist.4. Relay according to claim 3, d a d u r c h g e k e n n ¬ z e i c h n e t that in the partition (3) a slot (40) is provided, in which an insulating plate (39) is inserted from one side.
5. Relais nach Anspruch 3, d a d u r. c h g e k e n n ¬ z e i c h n e t , daß der Grundkörper wanneπförmig nach oben gezogene Seitenwände besitzt, zwischen denen aas Ma¬ gnetsystem (2) auf Maß einpreßbar und in justierter Stel- lung fixierbar ist.5. Relay according to claim 3, d a d u r. that the base body has side walls drawn upward in the shape of a tub, between which a magnetic system (2) can be pressed to size and fixed in an adjusted position.
6. Relais nach einem der Anspruch,! 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , "T-.-ä' der Schieber (23; 53) jeweils Ausnehmungen (25; 38) aufweist, in die deformier- bare Enden der Kontaktfeder (30) des Ankers (18; 48) ein¬ greifen.6. Relay according to one of the claim! 1 to 5, characterized in that "T -.- ä 'of the slide (23; 53) each has recesses (25; 38) into which deformable ends of the contact spring (30) of the armature (18; 48) engage .
7. Relais nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , daß der im wesentlichen ge- rade Anker (48) über einem gegenüber den Endpolen erhöhten Mittelpol des Dauermagneten (47) gelagert ist.7. Relay according to one of claims 1 to 6, so that the essentially straight armature (48) is mounted over a central pole of the permanent magnet (47) which is raised relative to the end poles.
8. Relais nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , daß der Dauermagnet (17) im wesentlichen die Form eines geraden Balkens besitzt und daß der Anker (18) mit den Enden leicht von den Endpolen des Dauermagneten weggebogen ist.8. Relay according to one of claims 1 to 6, so that the permanent magnet (17) has essentially the shape of a straight bar and that the ends of the armature (18) are slightly bent away from the end poles of the permanent magnet.
9. Relais nach einem der Ansprüche 2 bis 8, d a d u r c h g e k e n n z e i c h n e t , daß der Anker über seitli¬ che Lagerzapfen (50) in Lagerbohrungen (51) von Seitenwän¬ den des Grundkörpers (41) gelagert ist. 9. Relay according to one of claims 2 to 8, characterized in that the armature is mounted via lateral bearing journals (50) in bearing bores (51) of Seitenwän¬ the base body (41).
10. Relais nach einem der Ansprüche 2 bis 8, d a d u r c h g e k e n n z e i c h n e t , daß der Anker (18) über ei¬ ne am Dauermagneten (17) einrastbare Lagerfeder (19) gela¬ gert ist.10. Relay according to one of claims 2 to 8, so that the armature (18) is mounted via a bearing spring (19) which can be latched onto the permanent magnet (17).
11. Relais nach einem der Ansprüche 1 bis 10, d a ¬ d u r c h g e k e n n z e i c h n e t , daß die Kon¬ taktfeder (30; 54) mit einem starren Träger (29; 55) von einer Seite her in eine Haltenut des Grundkörpers und ein feststehendes Schließerkontaktelement (33) von der entge¬ gengesetzten Seite in Befestigungsnuten des Grundkörpers (1) eingesteckt sind.11. Relay according to one of claims 1 to 10, since ¬ characterized in that the Kon¬ contact spring (30; 54) with a rigid support (29; 55) from one side into a holding groove of the base body and a fixed NO contact element (33) are inserted into the fastening grooves of the base body (1) from the opposite side.
12. Relais nach einem der Ansprüche 1 bis 11, d a - d u r c h g e k e n n z e i c h n e t , daß die Ver¬ bindungsstelle zwischen der Kontaktfeder (30) und deren Träger (29) entgegengesetzt zur Kontaktstelle liegt und daß Kontaktfeder und Träger über einen wesentlichen Teil ihrer Länge annähernd parallel und in geringem Abstand voneinander verlaufen.12. Relay according to one of claims 1 to 11, since - characterized in that the Ver¬ connection point between the contact spring (30) and its carrier (29) is opposite to the contact point and that the contact spring and carrier over a substantial part of their length approximately parallel and run at a short distance from each other.
13. Relais nach Anspruch 12, d a d u r c h g e k e n n ¬ z e i c h n e t , daß das Schließerkontaktelement (33) einen langgestreckten ferromagnetischen Abschnitt (33a) aufweist, der sich der Kontaktfeder (30) gegenüberliegend über einen wesentlichen Teil parallel zur Kontaktfeder er¬ streckt.13. Relay according to claim 12, so that the normally open contact element (33) has an elongated ferromagnetic section (33a) which extends opposite the contact spring (30) over a substantial part parallel to the contact spring.
14. Relais nach einem der Ansprüche 1 bis 13, d a - d u r c h g e k e n n z e i c h n e t , daß die Kon¬ taktfeder (30) gespalten ist, wobei ein erster Federschen¬ kel (31) mit dem Schließerkontaktelement (33) einen mit Edelmetall gebildeten Hauptkontakt (34, 35) und ein zwei¬ ter Federschenkel (32) einen mit hochschmelzendem Material gebildeten Vorlaufkontakt (36, 37) bildet. 14. Relay according to one of claims 1 to 13, - characterized in that the contact spring (30) is split, a first spring leg (31) with the normally open contact element (33) having a main contact (34, 35) formed with noble metal ) and a second spring leg (32) forms a flow contact (36, 37) formed with high-melting material.
15. Relais nach einem der Ansprüche 1 bis 14, d a ¬ d u r c h g e k e n n z e i c h n e t , daß der Kern aus zwei identischen L-förmigen Teilen (15, 16) besteht. 15. Relay according to one of claims 1 to 14, d a ¬ d u r c h g e k e n n z e i c h n e t that the core consists of two identical L-shaped parts (15, 16).
EP93908825A 1992-05-15 1993-05-03 Polarized power relay Expired - Lifetime EP0640243B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4216076 1992-05-15
DE4216076 1992-05-15
PCT/DE1993/000383 WO1993023866A1 (en) 1992-05-15 1993-05-03 Polarized power relay

Publications (2)

Publication Number Publication Date
EP0640243A1 true EP0640243A1 (en) 1995-03-01
EP0640243B1 EP0640243B1 (en) 1996-08-28

Family

ID=6458954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93908825A Expired - Lifetime EP0640243B1 (en) 1992-05-15 1993-05-03 Polarized power relay

Country Status (7)

Country Link
US (1) US5515019A (en)
EP (1) EP0640243B1 (en)
JP (1) JPH07506696A (en)
AT (1) ATE142046T1 (en)
CZ (1) CZ281297B6 (en)
DE (1) DE59303588D1 (en)
WO (1) WO1993023866A1 (en)

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Also Published As

Publication number Publication date
EP0640243B1 (en) 1996-08-28
WO1993023866A1 (en) 1993-11-25
CZ271694A3 (en) 1995-02-15
JPH07506696A (en) 1995-07-20
DE59303588D1 (en) 1996-10-02
US5515019A (en) 1996-05-07
CZ281297B6 (en) 1996-08-14
ATE142046T1 (en) 1996-09-15

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