EP0777248B1 - Electromagnetic relay and method to adjust the electromagnetic relay - Google Patents
Electromagnetic relay and method to adjust the electromagnetic relay Download PDFInfo
- Publication number
- EP0777248B1 EP0777248B1 EP96118334A EP96118334A EP0777248B1 EP 0777248 B1 EP0777248 B1 EP 0777248B1 EP 96118334 A EP96118334 A EP 96118334A EP 96118334 A EP96118334 A EP 96118334A EP 0777248 B1 EP0777248 B1 EP 0777248B1
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- European Patent Office
- Prior art keywords
- spring
- zone
- electromagnetic relay
- armature
- load current
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- 238000000034 method Methods 0.000 title claims description 16
- 238000005452 bending Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004049 embossing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H2011/0087—Welding switch parts by use of a laser beam
Definitions
- the invention relates to an electromagnetic relay according to the preamble of claim 1 and a method for adjusting the starting voltage of the electromagnetic relay.
- a relay and a method of the aforementioned type are known from EP 0 281 950 A1.
- the relay described therein has an essentially L-shaped yoke, which can surround a winding 4 on two sides.
- At one end of the L-shaped yoke is an armature, to which a flat spring is attached, which can serve both as a switch contact spring and as a return spring of the armature.
- a load current connection terminal is provided which has a spring fixing area which is firmly connected to the flat form spring.
- the spring fixing area has a section which extends from the area adjacent to the yoke leg around the end of the armature.
- This section of the spring fixing area which extends around the end of the armature and ends in the area of the armature, is surrounded by sections of the flat form spring which are firmly connected to it.
- the flat form spring can also be bent in this area in such a way that the pull-in voltage of the relay can be changed.
- Another relay is known from DE 42 43 852 C2, a method for adjusting the starting voltage in such a relay being described in DE 42 43 854 C2.
- the switch contact spring has a resilient connecting element which is displaced on a section of a connecting tongue by means of an adjusting plunger until the relay armature picks up when the intended tension is applied. Once this has taken place, the connecting element is fixed on the section of the connecting tongue by means of laser welding.
- This method is very complex since not only a costly laser system, but also a precisely working optical deflection device is required to control the laser beam and to control it
- the bias can advantageously be achieved by simply bending the spring fixing area relative to the connection area of the load current connection terminal and relative to the yoke the flat spring and thus the strength of the restoring spring force on the armature can be changed, whereby the pull-in voltage of the relay can be influenced in a simple manner.
- connection area of the load current connection terminal can advantageously be designed as a flat plug.
- a method for adjusting the tightening voltage is described in claim 5. It is particularly advantageous that this method is technically particularly simple, that the adjustment is carried out particularly quickly and that the adjustment can be carried out on the relay which has already been assembled.
- Another advantage is that after the relay has been adjusted, it is guaranteed to pick up at the intended tightening voltage. As a result, the range of the pull-in voltages of all relays of one type can be considerably restricted.
- a type changeover of the production device with a suitably adjustable pull-in voltage can be achieved by simply changing the excitation voltages applied to the relay coils for adjustment.
- the adjustment device itself can also be quite simple.
- the spring fixing area is bent relative to the connection area in a simple manner by means of a wedge-shaped adjusting punch or an adjusting punch which carries out a rotation.
- FIG. 1 shows a relay according to the invention immediately before the tightening voltage is adjusted.
- the relay consists of a base plate (1) on which a magnetic coil (2) is arranged. Around two sides of the magnetic coil (2) there is an approximately L-shaped yoke (3) which is riveted to the magnetic core (4).
- a section of the armature (5) rests on an end face of the yoke (3).
- the armature (5) is held by a flat form spring (6) with which it is mechanically connected (riveted in this exemplary embodiment). Bent end sections (7) of the flat form spring (6) support the armature (5) against the yoke (3).
- the flat form spring (6) also serves as a switch contact spring and as a return spring for the armature (5). It therefore carries two switch contacts (8a, 8b), one of which (8a) is in contact with the normally closed contact (9) and the other is opposite the normally open contact (10).
- connection terminals connected to the contacts (8a, 8b, 9, 10) cannot be seen in FIG. 1, since they are designed as flat plugs which are passed through the side of the base plate (1) not shown in FIG. 1.
- the bias of the return spring (also formed by the flat spring (6)) changes when the spring fixing area (11a) is shifted. This is done here by bending the spring fixing area (11a) by means of an adjusting plunger (12). If, for example, the spring fixing area (11a) is bent in the direction of the arrow (13), the restoring force of the flat form spring (6) on the armature (5) is reduced and the required minimum tightening tension shifts to lower values.
- the actual adjustment process now proceeds as follows.
- the relay is in mechanical abutment against a stop (14) and is also held by means of mechanical locking means (15).
- the relay coil is acted on (not shown in the figure) by the intended pull-in voltage and the connection terminals connected to the switch contact spring (flat form spring (6)) and the normally open contact (10) are connected to a current or resistance measuring device which detects the presence of the switch contact (8b ) registered at the make contact (10) and thus the successful tightening of the relay.
- the wedge-shaped adjusting punch (12) now bends the spring fixing area (11a) until the relay picks up due to the decreasing preload of the flat form spring (6).
- This adjustment process can be carried out fully automatically and very quickly, so that it is suitable for adjusting relays manufactured in very large numbers, since it does not increase the cycle times of relay production.
- FIG. 2 illustrates the structure of the relay according to the invention on the basis of another view and shows further advantageous features.
- the configuration of the load current connection terminal (11) is particularly clear here.
- the flat form spring (6) is firmly connected to the load current connection terminal (11), specifically by means of a soldered or welded connection (16).
- the load current connection terminal (11) forms a flat plug (17).
- the spring fixing area (11a) and the connection area (11b) are separated from one another by a slot-shaped recess (18), which simplifies the bending of the spring fixing area (11a) by means of the adjusting stamp (12).
- An embossing (19) serves as a predetermined bending point and ensures that the bending takes place in a defined manner. The formation of the slot as a closed slot ensures little springback when bending the load current connection terminal (11).
- Electromagnetic relay and method for adjusting the pull voltage of the electromagnetic relay are Electromagnetic relay and method for adjusting the pull voltage of the electromagnetic relay
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Description
Die Erfindung betrifft ein elektromagnetisches Relais nach dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zur Justierung der Anzugsspannung des elektromagnetischen Relais.The invention relates to an electromagnetic relay according to the preamble of claim 1 and a method for adjusting the starting voltage of the electromagnetic relay.
Aus der EP 0 281 950 A1 sind ein Relais und ein Verfahren der vorgenannten Art bekannt. Das darin beschriebene Relais weist ein im wesentlichen L-förmiges Joch auf, das eine Wicklung 4 an zwei Seiten umgeben kann. An einem Ende des L-förmigen Joches schließt sich ein Anker an, an dem eine Flachformfeder angebracht ist, die sowohl als Schaltkontaktfeder als auch als Rückstellfeder des Ankers dienen kann. Im Bereich des an den Anker angrenzenden Jochschenkels ist eine Laststromanschlußklemme vorgesehen, die einen Federfixierbereich aufweist, der fest mit der Flachformfeder verbunden ist. insbesondere weist der Federfixierbereich einen Abschnitt auf, der sich ausgehend von dem dem Jochschenkel benachbarten Bereich um das Ende des Ankers herum erstreckt. Dieser sich um das Ende des Ankers herum erstreckende und im Bereich des Ankers endende Abschnittes des Federfixierbereiches ist von fest mit ihm verbundenen Abschnitten der Flachformfeder umgeben. Durch Verbiegen dieses um das Ende des Ankers herum ragenden Abschnittes des Federfixierbereiches kann gleichzeitig auch die Flachformfeder in diesem Bereich derart verbogen werden, dass die Anzugsspannung des Relais verändert werden kann.A relay and a method of the aforementioned type are known from EP 0 281 950 A1. The relay described therein has an essentially L-shaped yoke, which can surround a winding 4 on two sides. At one end of the L-shaped yoke is an armature, to which a flat spring is attached, which can serve both as a switch contact spring and as a return spring of the armature. In the area of the yoke leg adjoining the armature, a load current connection terminal is provided which has a spring fixing area which is firmly connected to the flat form spring. in particular, the spring fixing area has a section which extends from the area adjacent to the yoke leg around the end of the armature. This section of the spring fixing area, which extends around the end of the armature and ends in the area of the armature, is surrounded by sections of the flat form spring which are firmly connected to it. By bending this section of the spring fixing area which projects around the end of the armature, the flat form spring can also be bent in this area in such a way that the pull-in voltage of the relay can be changed.
Ein weiteres Relais ist aus der DE 42 43 852 C2 bekannt, wobei ein Verfahren zur Justierung der Anzugsspannung bei einem solchen Relais in der DE 42 43 854 C2 beschrieben wird.Another relay is known from DE 42 43 852 C2, a method for adjusting the starting voltage in such a relay being described in DE 42 43 854 C2.
Bei diesem Relais weist die Schaltkontaktfeder ein federndes Verbindungselement auf, welches mittels eines Justierstempels auf einem Abschnitt einer Anschlußzunge verschoben wird, bis der Relaisanker bei angelegter vorgesehener Anzugsspannung anzieht. Ist dieses erfolgt, wird das Verbindungselement mittels Laserschweißens auf dem Abschnitt der Anschlußzunge festgesetzt.In this relay, the switch contact spring has a resilient connecting element which is displaced on a section of a connecting tongue by means of an adjusting plunger until the relay armature picks up when the intended tension is applied. Once this has taken place, the connecting element is fixed on the section of the connecting tongue by means of laser welding.
Hierbei erfolgt also ein Montage- und ein Justierschritt auf der gleichen Fertigungsstation, wodurch vorteilhafterweise eine kostenaufwendige Vorrichtung eingespart werden kann, wobei aber die Vorrichtung für diesen kombinierten Montage- und Justierschritt doch selbst vergleichsweise aufwendig ist.Here, therefore, an assembly and an adjustment step take place on the same production station, which advantageously saves an expensive device, but the device itself is comparatively complex for this combined assembly and adjustment step.
Unter bestimmten Umständen kann es aber auch günstiger sein, wenn der Montageund der Justierschritt nacheinander ausgeführt wird, nämlich dann, wenn sehr hohe Stückzahlen von solchen Relais gefertigt werden sollen und dementsprechend die Fertigungstaktzeiten sehr kurz sein müssen.In certain circumstances, however, it can also be more advantageous if the assembly and the adjustment step are carried out in succession, namely when very large numbers of such relays are to be produced and the production cycle times accordingly have to be very short.
Es werden in diesem Fall zur Montage und Justage zwar zwei Vorrichtungen statt einer benötigt, wobei aber jede dieser Vorrichtungen für sich einfacher aufgebaut sein kann als eine bekannte kombinierte Vorrichtung. Die Taktzeiten sind aber bedeutend kürzer, da der relativ zeitaufwendige kombinierte Montage- und Justierschritt wegfällt und durch zwei sehr schnell aufeinanderfolgende Einzelschritte ersetzt wird.In this case, two devices are required instead of one for assembly and adjustment, but each of these devices can be of simpler construction than a known combined device. The cycle times are significantly shorter, however, since the relatively time-consuming combined assembly and adjustment step is eliminated and is replaced by two very quickly consecutive individual steps.
Aus der DE 32 35 714 A1 ist bereits ein Verfahren bekannt, mit dem die Anzugsspannung eines bereits fertigmontierten Relais einjustiert werden kann. Hierzu wird vorgeschlagen, Relaiskomponenten, die sich mittels lokaler Erwärmung definiert verformen lassen, also im wesentlichen die Kontaktfeder, mittels eines Laserstrahles zu deformieren.From DE 32 35 714 A1 a method is already known with which the pull-in voltage of an already assembled relay can be adjusted. For this purpose, it is proposed to deform relay components which can be deformed in a defined manner by means of local heating, that is to say essentially the contact spring, by means of a laser beam.
Dieses Verfahren ist sehr aufwendig, da nicht nur eine kostenaufwendige Laseranlage, sondern auch eine präzise arbeitende optische Ablenkvorrichtung zur Steuerung des Laserstrahles benötigt wird und zur Ansteuerung dieseThis method is very complex since not only a costly laser system, but also a precisely working optical deflection device is required to control the laser beam and to control it
Ablenkvorrichtung der algorithmische Zusammenhang zwischen Bestrahlungspunkt, Bestrahlungsdauer und hierdurch erzielte Verformung für die zu justierende Komponente genau bekannt sein muß.Deflection device the algorithmic connection between the irradiation point, irradiation duration and the deformation achieved thereby for the component to be adjusted must be known exactly.
Zudem kommt es bei einer solchen Laserjustierung zu einem Materialabtrag gerade an den Stellen der Kontaktfeder, die später beim Betrieb des Relais stark belastet sind. Daher kann durch dieses Verfahren die Lebensdauer bzw. die Zuverlässigkeit eines so justierten Relais beeinträchtigt sein.In addition, with such a laser adjustment, material is removed precisely at the points on the contact spring which are later heavily loaded during the operation of the relay. This procedure can therefore affect the service life or the reliability of a relay that has been adjusted in this way.
Es ist daher die Aufgabe der Erfindung unter Vermeidung der genannten Nachteile ein Relais zu schaffen, das einfach und kostengünstig zu montieren ist und dessen Anzugsspannung im montierten Zustand ebenfalls auf einfache und kostengünstige Weise einjustiert werden kann.It is therefore the object of the invention, while avoiding the disadvantages mentioned, to provide a relay which is simple and inexpensive to assemble and whose tightening voltage in the assembled state can also be adjusted in a simple and inexpensive manner.
Diese Aufgabe wird erfindungsgemäß durch ein Relais der eingangs genannten Art mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst.This object is achieved by a relay of the type mentioned with the characterizing features of claim 1.
Durch diese erfindungsgemäße Ausgestaltung eines elektromagnetischen Relais kann auf vorteilhafte Weise durch einfaches Biegen des Federfixierbereiches gegenüber dem Anschlussbereich der Laststromanschlussklemme und gegenüber dem Joch die Vorspannung der Flachformfeder und damit die Stärke der rückstellenden Federkraft auf den Anker verändert werden, wodurch die Anzugsspannung des Relais auf einfache Weise beeinflußt werden kann.By means of this embodiment of an electromagnetic relay according to the invention, the bias can advantageously be achieved by simply bending the spring fixing area relative to the connection area of the load current connection terminal and relative to the yoke the flat spring and thus the strength of the restoring spring force on the armature can be changed, whereby the pull-in voltage of the relay can be influenced in a simple manner.
In den Unteransprüchen sind hierzu weitere vorteilhafte Ausgestaltungen und Weiterbildungen dargestellt. So kann der Anschlußbereich der Laststromanschlußklemme vorteilhafterweise als Flachstecker ausgeführt sein.For this purpose, further advantageous refinements and developments are presented in the subclaims. For example, the connection area of the load current connection terminal can advantageously be designed as a flat plug.
Besonders vorteilhaft ist es, zwischen dem Anschlußbereich und dem Federfixierbereich der Laststromanschlußklemme eine Ausnehmung in Form eines Schlitzes vorzusehen, wodurch diese Bereiche gut gegeneinander beweglich sind.It is particularly advantageous to provide a recess in the form of a slot between the connection area and the spring-fixing area of the load current connecting terminal, as a result of which these areas can be moved well with respect to one another.
Ebenfalls sehr vorteilhaft ist es, in die Laststromanschlußklemme eine Prägung als Sollbiegestelle einzubringen, damit die Biegung in eine genau definierte Richtung erfolgt.It is also very advantageous to emboss the load current connection terminal as a predetermined bending point so that the bending takes place in a precisely defined direction.
Ein Verfahren zur Justierung der Anzugsspannung ist im Anspruch 5 beschrieben. Hierbei ist besonders vorteilhaft, daß dieses Verfahren technisch besonders einfach ist, daß die Justierung besonders schnell erfolgt und daß die Justierung am bereits fertig montierten Relais erfolgen kann.A method for adjusting the tightening voltage is described in claim 5. It is particularly advantageous that this method is technically particularly simple, that the adjustment is carried out particularly quickly and that the adjustment can be carried out on the relay which has already been assembled.
Ebenfalls von Vorteil ist, daß nach der Justierung des Relais dieses garantiert bei der vorgesehenen Anzugsspannung anzieht. Dadurch kann der Streubereich der Anzugsspannungen aller gefertigten Relais eines Typs erheblich eingeschränkt werden. Eine Typumstellung der Fertigungseinrichtung mit entsprechend umzustellender Anzugsspannung kann durch einfachen Wechsel der zum Justieren an den Relaisspulen angelegten Erregungsspannungen erreicht werden.Another advantage is that after the relay has been adjusted, it is guaranteed to pick up at the intended tightening voltage. As a result, the range of the pull-in voltages of all relays of one type can be considerably restricted. A type changeover of the production device with a suitably adjustable pull-in voltage can be achieved by simply changing the excitation voltages applied to the relay coils for adjustment.
Auch die Justiereinrichtung selbst kann recht einfach ausgeführt sein. Das Biegen des Federfixierbereiches gegenüber dem Anschlußbereich erfolgt auf einfache Weise mittels eines keilförmigen Justierstempels oder eines Justierstempels, der eine Rotation ausführt.The adjustment device itself can also be quite simple. The spring fixing area is bent relative to the connection area in a simple manner by means of a wedge-shaped adjusting punch or an adjusting punch which carries out a rotation.
Im folgenden soll ein Ausführungsbeispiel eines erfindungsgemäßen elektromagnetischen Relais und des hieran ausführbaren Verfahrens zur Justierung der Anzugsspannung anhand der Zeichnung dargestellt und näher erläutert werden.In the following, an exemplary embodiment of an electromagnetic relay according to the invention and the method for adjusting the pull-in voltage that can be carried out thereon will be illustrated and explained in more detail with reference to the drawing.
Es zeigen
- Figur 1
- eine Ansicht auf das erfindungsgemäße Relais vor der Justierung;
- Figur 2
- eine Seitenansicht des erfindungsgemäßen Relais.
- Figure 1
- a view of the relay according to the invention before adjustment;
- Figure 2
- a side view of the relay according to the invention.
Die Figur 1 zeigt ein erfindungsgemäßes Relais unmittelbar vor der Justierung der Anzugsspannung.FIG. 1 shows a relay according to the invention immediately before the tightening voltage is adjusted.
Das Relais besteht aus einer Grundplatte (1), auf der eine Magnetspule (2) angeordnet ist. Um zwei Seiten der Magnetspule (2) herum liegt ein in etwa L-förmig ausgebildetes Joch (3), welches mit dem Magnetkern (4) vernietet ist.The relay consists of a base plate (1) on which a magnetic coil (2) is arranged. Around two sides of the magnetic coil (2) there is an approximately L-shaped yoke (3) which is riveted to the magnetic core (4).
Auf einer Stirnseite des Joches (3) liegt ein Abschnitt des Ankers (5) auf. Der Anker (5) wird durch eine Flachformfeder (6) gehalten, mit welcher er mechanisch verbunden (in diesem Ausführungsbeispiel vernietet) ist. Abgebogene Endabschnitte (7) der Flachformfeder (6) stützen den Anker (5) gegen das Joch (3) ab.A section of the armature (5) rests on an end face of the yoke (3). The armature (5) is held by a flat form spring (6) with which it is mechanically connected (riveted in this exemplary embodiment). Bent end sections (7) of the flat form spring (6) support the armature (5) against the yoke (3).
Die Flachformfeder (6) dient zudem als Schaltkontaktfeder sowie als Rückstellfeder für den Anker (5). Sie trägt daher zwei Schaltkontakte (8a, 8b), von dem der eine (8a) an dem Ruhekontakt (9) anliegt und der andere dem Arbeitskontakt (10) gegenübersteht.The flat form spring (6) also serves as a switch contact spring and as a return spring for the armature (5). It therefore carries two switch contacts (8a, 8b), one of which (8a) is in contact with the normally closed contact (9) and the other is opposite the normally open contact (10).
Die mit den Kontakten (8a, 8b, 9, 10) verbundenen Anschlußklemmen sind in der Figur 1 nicht erkennbar, da sie ausgeführt als Flachstecker durch die in der Figur 1 nicht dargestellte Seite der Grundplatte (1) hindurchgeführt sind.The connection terminals connected to the contacts (8a, 8b, 9, 10) cannot be seen in FIG. 1, since they are designed as flat plugs which are passed through the side of the base plate (1) not shown in FIG. 1.
Lediglich ein Teilbereich der Laststromanschlußklemme, welcher mit der Schaltkontaktfeder (ausgebildet durch die Flachformfeder (6)) elektrisch und mechanisch verbunden ist, ist erkennbar, weshalb dieser Teilbereich hier als Federfixierbereich (11a) bezeichnet ist. Die Laststromanschlußklemme wird später anhand der Figur 2 näher erläutert werden.Only a partial area of the load current connecting terminal, which is electrically and mechanically connected to the switch contact spring (formed by the flat spring (6)), can be seen, which is why this partial area is shown here as Spring fixing area (11a) is designated. The load current connection terminal will be explained in more detail later with reference to FIG. 2.
Wesentlich ist, daß sich bei dem erfindungsgemäß ausgebildeten Relais die Vorspannung der Rückstellfeder (ebenfalls ausgebildet durch die Flachformfeder (6)) ändert, wenn der Federfixierbereich (11a) verschoben wird. Dies geschieht hier durch Verbiegen des Federfixierbereichs (11a) mittels eines Justierstempels (12). Wird zum Beispiel der Federfixierbereich (11a) in Richtung des Pfeiles (13) gebogen, so verringert sich die Rückstellkraft der Flachformfeder (6) auf den Anker (5) und die erforderliche Mindestanzugsspannung verschiebt sich zu geringeren Werten hin.It is essential that in the relay designed according to the invention, the bias of the return spring (also formed by the flat spring (6)) changes when the spring fixing area (11a) is shifted. This is done here by bending the spring fixing area (11a) by means of an adjusting plunger (12). If, for example, the spring fixing area (11a) is bent in the direction of the arrow (13), the restoring force of the flat form spring (6) on the armature (5) is reduced and the required minimum tightening tension shifts to lower values.
Der eigentliche Justiervorgang läuft nun folgendermaßen ab. Das Relais liegt zur mechanischen Fixierung an einem Anschlag (14) an und wird zudem mittels mechanischer Arretierungsmittel (15) gehalten.The actual adjustment process now proceeds as follows. The relay is in mechanical abutment against a stop (14) and is also held by means of mechanical locking means (15).
Die Relaisspule wird (in der Figur nicht dargestellt) mit der vorgesehenen Anzugsspannung beaufschlagt und die mit der Schaltkontaktfeder (Flachformfeder (6)) und dem Arbeitskontakt (10) verbundenen Anschlußklemmen werden mit einer Strom- oder Widerstandsmeßeinrichtung verbunden, welche das Anliegen des Schaltkontaktes (8b) am Arbeitskontakt (10) und damit das erfolgte Anziehen des Relais registriert.The relay coil is acted on (not shown in the figure) by the intended pull-in voltage and the connection terminals connected to the switch contact spring (flat form spring (6)) and the normally open contact (10) are connected to a current or resistance measuring device which detects the presence of the switch contact (8b ) registered at the make contact (10) and thus the successful tightening of the relay.
Durch den keilförmigen Justierstempel (12) wird nun der Federfixierbereich (11a) soweit gebogen, bis durch die geringer werdende Vorspannung der Flachformfeder (6) das Relais anzieht.The wedge-shaped adjusting punch (12) now bends the spring fixing area (11a) until the relay picks up due to the decreasing preload of the flat form spring (6).
Dieses Justierverfahren kann vollautomatisch und sehr schnell erfolgen, so daß es zur Justierung von in sehr hohen Stückzahlen gefertigten Relais geeignet ist, da es die Taktzeiten der Relaisproduktion nicht erhöht.This adjustment process can be carried out fully automatically and very quickly, so that it is suitable for adjusting relays manufactured in very large numbers, since it does not increase the cycle times of relay production.
Die Figur 2 verdeutlicht anhand einer anderen Ansicht den Aufbau des erfindungsgemäßen Relais und zeigt weitere vorteilhafte Merkmale.FIG. 2 illustrates the structure of the relay according to the invention on the basis of another view and shows further advantageous features.
Besonders deutlich wird hier die Ausgestaltung der Laststromanschlußklemme (11). Im oberen Bereich (Federfixierbereich (11a)) ist die Flachformfeder (6) fest mit der Laststromanschlußklemme (11), und zwar mittels einer Löt- oder Schweißverbindung (16) verbunden. Im unteren Bereich (Anschlußbereich (11b)) bildet die Laststromanschlußklemme (11) einen Flachstecker (17) aus.The configuration of the load current connection terminal (11) is particularly clear here. In the upper area (spring fixing area (11a)), the flat form spring (6) is firmly connected to the load current connection terminal (11), specifically by means of a soldered or welded connection (16). In the lower area (connection area (11b)) the load current connection terminal (11) forms a flat plug (17).
Der Federfixierbereich (11a) und der Anschlußbereich (11b) sind durch eine schlitzförmige Ausnehmung (18) voneinander getrennt, welche das Biegen des Federfixierbereichs (11a) durch den Justierstempel (12) vereinfacht. Eine Prägung (19) dient als Sollbiegestelle und sorgt dafür, daß die Abbiegung auf definierte Weise erfolgt. Die Ausbildung des Schlitzes als geschlossener Schlitz sorgt dabei für eine geringe Rückfederung beim Biegen der Laststromanschlußklemme (11).The spring fixing area (11a) and the connection area (11b) are separated from one another by a slot-shaped recess (18), which simplifies the bending of the spring fixing area (11a) by means of the adjusting stamp (12). An embossing (19) serves as a predetermined bending point and ensures that the bending takes place in a defined manner. The formation of the slot as a closed slot ensures little springback when bending the load current connection terminal (11).
- 11
- Grundplattebaseplate
- 22
- Magnetspulesolenoid
- 33
- Jochyoke
- 44
- Magnetkernmagnetic core
- 55
- Ankeranchor
- 66
- FlachformfederFlat form spring
- 77
- abgebogene Endabschnitte (der Flachformfeder (6))bent end sections (the flat spring (6))
- 8a, 8b8a, 8b
- Schaltkontakte (an Flachformfeder (6))Switch contacts (on flat spring (6))
- 99
- RuhekontaktNormally Closed
- 1010
- ArbeitskontaktNormally Open
- 1111
- LaststromanschlußklemmeLoad current terminal
- 11 a11 a
- Federfixierbereich (der Laststromanschlußklemme (11))Spring fixing area (of the load current connection terminal (11))
- 11 b11 b
- Anschlußbereich (der Laststromanschlußklemme (11))Connection area (of the load current connection terminal (11))
- 1212
- JustierstempelJustierstempel
- 1313
- Pfeil (zur Angabe der Biegerichtung des Federfixierbereiches (11a)Arrow (to indicate the bending direction of the spring fixing area (11a)
- 1414
- Anschlagattack
- 1515
- Arretierungsmittellocking
- 1616
- Löt- oder SchweißverbindungSoldered or welded connection
- 1717
- Flachsteckertabs
- 1818
- schlitzförmige Ausnehmungslit-shaped recess
- 1919
- Prägungembossing
Claims (7)
- Electromagnetic relay in the form of a clapper-type relay with a yoke (3) and an armature (5), said armature (5) being connected to a flatform spring (6) which in integral fashion forms both a switching contact spring and a resetting spring for the armature (5), and being connected mechanically and electrically to a load current terminal (11), said load current terminal (11) incorporating a spring locating zone (11a) - which extends along part of the yoke (3) - and a connection zone (11b), and the spring locating zone (11a) and the connection zone (11b) of the load current terminal (11) being of flexible construction in relation to one another,
characterised in that on the face that is furthest from the armature (5) the spring locating zone (11a) has a free end of a type enabling an adjusting plunger (12) to be introduced between the yoke (3) and the free end of the spring locating zone (11a) in order to adjust the relay's operating voltage. - Electromagnetic relay according to claim 1, characterised in that the connection zone (11b) forms a flat-pin connector (17).
- Electromagnetic relay according to claim 1, characterised in that the spring locating zone (11a) has an embossed area (19).
- Electromagnetic relay according to claim 1, characterised in that the load current terminal (11) has a slotted recess (18) between the spring locating zone (11a) and the connection zone (11b).
- Method for adjusting the operating voltage on an electromagnetic relay according to claim 1, characterised by the following steps:1) locating the electromagnetic relay in an adjusting device;2) passing the intended operating voltage across the terminals of the magnet coil (2) and connecting the terminals of the make contact element (10) and of the movable switching contact spring to a current or resistance measuring instrument;3) by means of an adjusting plunger (12), bending the free end of the spring locating zone (11a) of the load current terminal relative to the connection zone (11b) and relative to the yoke (3), far enough for the magnet coil (2) to pick up the armature (5) and for the movable switching contact (8b) to be electrically connected to the make contact element (10).
- Method according to claim 5, characterised in that the adjusting plunger (12) is a cuneiform construction.
- Method according to claim 5, characterised in that the adjusting plunger performs a rotational movement, the rotation axis of which forms an approximate extension of the embossed area (19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19544626A DE19544626C2 (en) | 1995-11-30 | 1995-11-30 | Electromagnetic relay and method for adjusting the pull voltage of the electromagnetic relay |
| DE19544626 | 1995-11-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0777248A2 EP0777248A2 (en) | 1997-06-04 |
| EP0777248A3 EP0777248A3 (en) | 1998-09-23 |
| EP0777248B1 true EP0777248B1 (en) | 2004-03-31 |
Family
ID=7778797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96118334A Expired - Lifetime EP0777248B1 (en) | 1995-11-30 | 1996-11-15 | Electromagnetic relay and method to adjust the electromagnetic relay |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5864268A (en) |
| EP (1) | EP0777248B1 (en) |
| DE (2) | DE19544626C2 (en) |
| ES (1) | ES2217296T3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369176C (en) * | 2005-01-20 | 2008-02-13 | 厦门宏发电声有限公司 | Electromagnetic relay reset reed and its motion voltage correcting method |
| WO2008033909A2 (en) * | 2006-09-12 | 2008-03-20 | The General Hospital Corporation | Apparatus, probe and method for providing depth assessment in an anatomical structure |
| CN102592889B (en) * | 2012-03-07 | 2014-05-14 | 厦门宏发汽车电子有限公司 | Electromagnetic relay suitable for automatic production and with reliable electroconductivity and assembling method thereof |
| CN104538250B (en) * | 2015-02-03 | 2016-08-24 | 佛山市川东磁电股份有限公司 | A kind of magnetic switch |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1816364B2 (en) * | 1968-12-21 | 1973-11-15 | Westfaelische Metall Industrie Kg, Hueck & Co, 4780 Lippstadt | Electromagnetic relay, especially for motor vehicles |
| DE3235714A1 (en) * | 1982-09-27 | 1984-03-29 | Siemens AG, 1000 Berlin und 8000 München | METHOD AND DEVICE FOR ADJUSTING CONTACT SPRINGS IN A RELAY |
| CA1209184A (en) * | 1983-02-28 | 1986-08-05 | Mitsuki Nagamoto | Electromagnetic relay structure |
| DE3889947T2 (en) * | 1987-03-06 | 1994-11-03 | Takamisawa Electric Co | Electromagnetic relay with devices for reducing noise. |
| DE3873380D1 (en) * | 1987-03-13 | 1992-09-10 | Siemens Ag | ELECTROMAGNETIC RELAY. |
| DE3841667C1 (en) * | 1988-12-10 | 1990-02-01 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
| US5049844A (en) * | 1990-05-16 | 1991-09-17 | Beta Mfg. Co. | Enclosed electromagnetic relay |
| US5155458A (en) * | 1991-11-04 | 1992-10-13 | Gamble John G | Normally closed AC relay |
| JP2892230B2 (en) * | 1992-08-07 | 1999-05-17 | アンデン株式会社 | Electromagnetic relay |
| DE4243854C1 (en) * | 1992-12-23 | 1994-03-31 | Hella Kg Hueck & Co | Adjusting various components of EM relay - measuring working contact gap and setting by inserted gauge with further adjustments to movable contact carrier and yoke |
| DE4243852C1 (en) * | 1992-12-23 | 1994-03-31 | Hella Kg Hueck & Co | EM switching relay with adjustable contact carrier - in form of leaf spring element fixed to flap armature with slide element to adjust position |
-
1995
- 1995-11-30 DE DE19544626A patent/DE19544626C2/en not_active Expired - Fee Related
-
1996
- 1996-11-15 EP EP96118334A patent/EP0777248B1/en not_active Expired - Lifetime
- 1996-11-15 DE DE59610951T patent/DE59610951D1/en not_active Expired - Lifetime
- 1996-11-15 ES ES96118334T patent/ES2217296T3/en not_active Expired - Lifetime
- 1996-11-22 US US08/754,112 patent/US5864268A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0777248A3 (en) | 1998-09-23 |
| DE59610951D1 (en) | 2004-05-06 |
| EP0777248A2 (en) | 1997-06-04 |
| DE19544626C2 (en) | 2002-10-02 |
| ES2217296T3 (en) | 2004-11-01 |
| DE19544626A1 (en) | 1997-06-05 |
| US5864268A (en) | 1999-01-26 |
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