EP1145267B1 - Relay, in particular for a starting device - Google Patents

Relay, in particular for a starting device Download PDF

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Publication number
EP1145267B1
EP1145267B1 EP00981149A EP00981149A EP1145267B1 EP 1145267 B1 EP1145267 B1 EP 1145267B1 EP 00981149 A EP00981149 A EP 00981149A EP 00981149 A EP00981149 A EP 00981149A EP 1145267 B1 EP1145267 B1 EP 1145267B1
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EP
European Patent Office
Prior art keywords
coupling element
relay
magnet armature
relay according
switching rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00981149A
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German (de)
French (fr)
Other versions
EP1145267A1 (en
Inventor
Arno-Albert Binnewies
Ngoc-Thach Nguyen
Quang-Ngoc Tran
Werner Sander
Heinz Stichnoth
Karl-Wilhelm Boeker
Andreas Hamerich
Lutz Lehnert
Josef Weigt
Gunter Meyer
Dietmar Krause
Hans-Joachim Binio
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Publication of EP1145267A1 publication Critical patent/EP1145267A1/en
Application granted granted Critical
Publication of EP1145267B1 publication Critical patent/EP1145267B1/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Definitions

  • the invention relates to a relay, in particular for a starting device of an internal combustion engine, according to the preamble of the independent claim.
  • the known relay comprises a relay coil with a magnet armature, which is movable by energizing the relay coil.
  • a tappet fastened to the magnet armature is pressed onto a switching rod after a dead path has been covered.
  • a contact element which is connected to the shift rod, moved straight until it stops against two mating contacts, thereby closing a switch of a circuit of a starter motor.
  • This known relay has, inter alia, the disadvantage that the armature is losable, whereby the handling of the relay is difficult during assembly to the starting device.
  • Another disadvantage is that only a contact return spring releases the contact element of the mating contacts and this to open the circuit of the Starter motor in so-called contact welding under unsatisfactory conditions is insufficient.
  • the relay according to the invention with the features of the independent claim, it is possible on the one hand to design the relay so that the armature is captive and on the other hand, to use the momentum of the armature after switching off the relay coil to open the switch of the circuit of the starter motor.
  • a coupling element is provided which connects the shift rod and the magnet armature slidably limited.
  • a shift rod contact element By arranged on a shift rod contact element, it is possible that passes through the energization of the relay coil, the contact element in contact with mating contacts of the relay. As a result, for example, a closing of the starter motor circuit and by switching is possible.
  • the contact element opens the starter motor switch, the armature is acted upon by a restoring force acting counter to the switch-on of the relay.
  • the coupling element is arranged such that the armature is limited in the return direction relative to the shift rod displaced. This makes it possible that the armature via the coupling element takes the shift rod and thus opening the starter motor switch, especially under unfavorable circumstances, for example, when contact welding, allows.
  • the shift rod has a free end face, which serves as a stop for a plunger attached to the armature. It is thus possible that, during the switch-on process, the magnet armature presses over the plunger on the switching rod and thus presses the contact element against the mating contacts for closing the starter motor switch.
  • the coupling element partially surrounds the shift rod and the plunger. This is particularly advantageous if the coupling element is connected by means of a snap connection with the shift rod, since then the coupling element can be easily displaced on the shift rod.
  • a simple and inexpensive variant of a connection between the coupling element of the shift rod and the plunger is given by the fact that the coupling element surrounds the shift rod and the plunger sleeve-shaped.
  • a sleeve-shaped coupling element is particularly advantageous if the coupling element consists of a sleeve-shaped formed sheet metal. In addition, this facilitates a sliding over the shift rod or the plunger.
  • the coupling element engages with at least one projection either a corresponding counter-projection on the plunger or a corresponding counter-projection on the armature. If the magnet armature does not have a tappet, the only possibility is to mount a projection on the magnet armature itself. On the other hand, if the magnet armature has a tappet, it is advantageous to attach the projection to the tappet, as this does not make the coupling element too large.
  • the coupling element is configured in a further variant such that the switching rod is guided in a passage opening through the magnet armature. If the coupling element is partially formed such that it leads the shift rod in a passage opening through the armature, so you can use the resulting, or existing federal government to ensure that a spring element is attached supports and presses a contact element in a remote from the coupling element position.
  • FIG. 1 shows a first embodiment of a relay 10 according to the invention, in particular for a starting device of an internal combustion engine.
  • the relay 10 has a relay coil 13, on which a magnetic core 16 is arranged.
  • the relay coil 13 is inserted into a housing 19.
  • the relay coil 13 is associated with a movable armature 22, with which a plunger 25 is fixedly connected.
  • a shift rod 31 is axially guided by means of a sleeve-shaped member 34 made of insulating material, which also serves as a receptacle for a contact element 37. With the shift rod 31 and the contact element 37 in the through hole 28 is axially displaceable.
  • the contact element 37 If the contact element 37 reaches an end position, it comes into contact with it Mating contacts 40 of the relay. By the contact of the contact element 37 with the mating contacts 40, a circuit of a starter motor, not shown, is closed, so that the starter motor can be energized via the contact element 37 of a battery.
  • a coupling element 46 is provided, which connects the shift rod 31 and the armature 22 slidably limited.
  • the coupling element 46 is arranged such that the magnet armature 22 in a return direction, which is opposite to the turn-on, relative to the shift rod 31 is limitedly displaceable.
  • the coupling element 46 is not slidably connected to the shift rod 31 and on the other hand, the coupling element 46 has a projection 49 which engages behind a corresponding counter-projection 52 on the plunger 25.
  • the counter projection 52 is freely displaceable between the projection 49 and the free end face 43.
  • the shift rod 31 is connected to the coupling element 46 by means of a snap connection 55.
  • the coupling element 46 surrounds the shift rod 31 and the plunger 25th each partially and by the substantially cylindrical shape of the coupling element 46, the coupling element 46 surrounds the shift rod 31 and the plunger 25 sleeve-shaped.
  • a spring element 58 is provided, which is at one end portion 61 of the coupling element 46, which armature 22 is remote, and supports the contact element 37 in a position remote from the coupling element 46 position.
  • this remote position is determined by a fixedly connected to the shift rod 31 stop 64, see also FIG. 1 .
  • the shift rod 31 is in closed position, the remote from the coupling element 46 position is determined by the mating contacts 40.
  • the spring element 58 is supported on an inner side of the sleeve-shaped element 34 and on the other hand on an end face of the end section 61 of the coupling element 46.
  • the said spring element 58 is supported in the embodiment according to FIG. 2 on a collar 67 of the coupling element 46 from.
  • the coupling element 46 can guide the switching rod 31 in the passage opening 28 of the magnetic core 16
  • the end portion 61 of the coupling element 46 is enlarged in its outer diameter so that a suitable fit between the end portion 61 and passage opening 28 results.
  • the coupling element 46 is so expanded sleeve-shaped in the second embodiment, that on the one hand within a sleeve-shaped extension 70, the spring element 58 is added and on the other hand, the sleeve-shaped extension 70 has a suitable outer diameter, so that a suitable guidance of the coupling element 46 in the passage opening 28 results.
  • the armature 22 is retracted into the relay coil 13 and pushes with its plunger 25 on the shift rod 31.
  • the connected to the shift rod 31 coupling element 46 in turn pushes the spring member 58 and the sleeve-shaped member 34, the contact member 37 against the two mating contacts 40th In unfavorable switching states, welding between the contact element 37 and the mating contacts 40 may occur.
  • the coupling element 46 has a radially outwardly directed projection 49 which engages behind a counter projection 52 of the plunger 25 equivalent counter-projection 52 in a recess 79 of the armature 22.
  • the restoring force is generated, for example, by the fact that outside the magnet armature 22, a spring element generates this restoring force.
  • the coupling element 46 after FIG. 1 represents an injection molded part made of plastic.
  • the coupling element 46 according to FIG. 2 is a variant made of sheet metal, which is made by rolling a sheet metal strip.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Relay Circuits (AREA)

Description

Die Erfindung betrifft ein Relais, insbesondere für eine Startvorrichtung einer Brennkraftmaschine, gemäß der Gattung des unabhängigen Anspruchs.The invention relates to a relay, in particular for a starting device of an internal combustion engine, according to the preamble of the independent claim.

Relais für Startvorrichtungen von Brennkraftmaschinen sind z.B. bekannt aus der DE 411 72 42 C1 . Das bekannte Relais umfaßt eine Relaisspule mit einem Magnetanker, der durch Bestromung der Relaisspule bewegbar ist. Durch die Bewegung des Magnetankers in die Spule wird ein am Magnetanker befestigter Stößel nach dem Zurücklegen eines Totweges auf eine Schaltstange gedrückt. Dadurch wird ein Kontaktelement, das mit der Schaltstange verbunden ist, geradlinig bis zum Anschlag an zwei Gegenkontakte verschoben und dadurch ein Schalter eines Stromkreises eines Startermotors geschlossen.Relays for starting devices of internal combustion engines are known, for example from the DE 411 72 42 C1 , The known relay comprises a relay coil with a magnet armature, which is movable by energizing the relay coil. As a result of the movement of the magnet armature into the coil, a tappet fastened to the magnet armature is pressed onto a switching rod after a dead path has been covered. Thereby, a contact element which is connected to the shift rod, moved straight until it stops against two mating contacts, thereby closing a switch of a circuit of a starter motor.

Dieses bekannte Relais weist unter anderem den Nachteil auf, daß der Magnetanker verlierbar ist, wodurch die Handhabung des Relais bei der Montage an die Startvorrichtung erschwert ist. Ein weiterer Nachteil ist, daß lediglich eine Kontaktrückstellfeder das Kontaktelement von den Gegenkontakten löst und dies zum Öffnen des Stromkreises des Startermotors beim sogenannten Kontaktschweißen unter ungüstigen Bedingungen nicht ausreicht.This known relay has, inter alia, the disadvantage that the armature is losable, whereby the handling of the relay is difficult during assembly to the starting device. Another disadvantage is that only a contact return spring releases the contact element of the mating contacts and this to open the circuit of the Starter motor in so-called contact welding under unsatisfactory conditions is insufficient.

Vorteile der ErfindungAdvantages of the invention

Mit dem erfindungsgemäßen Relais mit den Merkmalen des unabhängigen Anspruchs ist es möglich, einerseits das Relais so zu gestalten, daß der Magnetanker unverlierbar ist und andererseits, die Schwungenergie des Magnetankers nach dem Abschalten der Relaisspule zum Öffnen des Schalters des Stromkreises des Startermotors zu nutzen. Hierzu ist ein Kupplungselement vorgesehen, das die Schaltstange und den Magnetanker miteinander begrenzt verschiebbar verbindet.With the relay according to the invention with the features of the independent claim, it is possible on the one hand to design the relay so that the armature is captive and on the other hand, to use the momentum of the armature after switching off the relay coil to open the switch of the circuit of the starter motor. For this purpose, a coupling element is provided which connects the shift rod and the magnet armature slidably limited.

Durch die in den Unteransprüchen aufgeführten Maßnahmen ergeben sich vorteilhafte Weiterbildungen und Verbesserungen der im unabhängigen Anspruch angegebenen Merkmale.The measures listed in the dependent claims, advantageous refinements and improvements of the features specified in the independent claim.

Durch ein an einer Schaltstange angeordnetes Kontaktelement ist es möglich, daß durch die Bestromung der Relaisspule das Kontaktelement in Kontakt mit Gegenkontakten des Relais gelangt. Dadurch ist beispielsweise ein Schließen des Startermotorstromkreises und durch das Einschalten möglich. Damit nach dem beabsichtigten Ende des Startvorgangs und damit der beendeten Bestromung der Relaisspule das Kontaktelement den Startermotorschalter öffnet, ist der Magnetanker mit einer Rückstellkraft beaufschlagt, die entgegen der Einschaltrichtung des Relais wirkt. Das Kupplungselement ist derart angeordnet, daß der Magnetanker in Rückstellrichtung gegenüber der Schaltstange begrenzt verschiebbar ist. Dadurch ist es möglich, daß der Magnetanker über das Kupplungselement die Schaltstange mitnimmt und so ein Öffnen des Startermotorschalters, insbesondere unter ungünstigen Umständen zum Beispiel beim Kontaktschweißen, ermöglicht. Die Schaltstange weist eine freie Stirnfläche auf, die als Anschlag für einen am Magnetanker befestigten Stößel dient. Damit ist möglich, daß beim Einschaltvorgang der Magnetanker über den Stößel auf die Schaltstange drückt und so das Kontaktelement gegen die Gegenkontakte zum Schließen des Startermotorschalters drückt. Das Kupplungselement umgibt die Schaltstange und den Stößel jeweils teilweise. Dies ist insbesondere dann von Vorteil, wenn das Kupplungselement mittels einer Schnappverbindung mit der Schaltstange verbunden ist, da sich dann das Kupplungselement leichter auf die Schaltstange überschieben läßt. Eine einfache und kostengünstige Variante einer Verbindung zwischen dem Kupplungselement der Schaltstange und dem Stößel ist dadurch gegeben, daß das Kupplungselement die Schaltstange und den Stößel hülsenförmig umgibt. Ein hülsenförmiges Kupplungselement ist insbesondere dann von Vorteil, wenn das Kupplungselement aus einem hülsenförmig umgeformten Blech besteht. Zudem erleichtert dies ein Überschieben über die Schaltstange beziehungsweise den Stößel. Das Kupplungselement hintergreift mit zumindest einem Vorsprung entweder einen korrespondierenden Gegenvorsprung am Stößel oder einen korrespondierenden Gegenvorsprung am Magnetanker. Weist der Magnetanker keinen Stößel auf, ist die einzige Möglichkeit einen Vorsprung anzubringen der Magnetanker selbst. Weist dagegen der Magnetanker einen Stößel auf, ist es von Vorteil den Vorsprung am Stößel anzubringen, da dadurch das Kupplungselement nicht zu groß baut. Das Kupplungselement ist in einer weiteren Variante derart ausgestaltet, daß die Schaltstange in einer Durchgangsöffnung durch den Magnetanker geführt wird. Wird das Kupplungselement abschnittsweise derart ausgebildet, daß es die Schaltstange in einer Durchgangsöffnung durch den Magnetanker führt, so kann man den dabei entstehenden, beziehungsweise vorhandenen Bund dazu verwenden, daß ein Federelement sich daran abstützt und ein Kontaktelement in ein vom Kupplungselement entfernte Stellung drückt.By arranged on a shift rod contact element, it is possible that passes through the energization of the relay coil, the contact element in contact with mating contacts of the relay. As a result, for example, a closing of the starter motor circuit and by switching is possible. Thus, after the intended end of the startup process and thus the completed energization of the relay coil, the contact element opens the starter motor switch, the armature is acted upon by a restoring force acting counter to the switch-on of the relay. The coupling element is arranged such that the armature is limited in the return direction relative to the shift rod displaced. This makes it possible that the armature via the coupling element takes the shift rod and thus opening the starter motor switch, especially under unfavorable circumstances, for example, when contact welding, allows. The shift rod has a free end face, which serves as a stop for a plunger attached to the armature. It is thus possible that, during the switch-on process, the magnet armature presses over the plunger on the switching rod and thus presses the contact element against the mating contacts for closing the starter motor switch. The coupling element partially surrounds the shift rod and the plunger. This is particularly advantageous if the coupling element is connected by means of a snap connection with the shift rod, since then the coupling element can be easily displaced on the shift rod. A simple and inexpensive variant of a connection between the coupling element of the shift rod and the plunger is given by the fact that the coupling element surrounds the shift rod and the plunger sleeve-shaped. A sleeve-shaped coupling element is particularly advantageous if the coupling element consists of a sleeve-shaped formed sheet metal. In addition, this facilitates a sliding over the shift rod or the plunger. The coupling element engages with at least one projection either a corresponding counter-projection on the plunger or a corresponding counter-projection on the armature. If the magnet armature does not have a tappet, the only possibility is to mount a projection on the magnet armature itself. On the other hand, if the magnet armature has a tappet, it is advantageous to attach the projection to the tappet, as this does not make the coupling element too large. The coupling element is configured in a further variant such that the switching rod is guided in a passage opening through the magnet armature. If the coupling element is partially formed such that it leads the shift rod in a passage opening through the armature, so you can use the resulting, or existing federal government to ensure that a spring element is attached supports and presses a contact element in a remote from the coupling element position.

Zeichnungendrawings

Die Erfindung wird nachstehend in zwei Ausführungsbeispielen anhand der zugehörigen Zeichnungen näher erläutert. Es zeigen:

  • Figur 1 ein erstes Ausführungsbeispiel eines erfindungsgemäßen Relais in einer Längsschnittsdarstellung,
  • Figur 2 ein zweites Ausführungsbeispiel eines erfindungsgemäßen Relais in einer Längsschnittsdarstellung.
The invention will be explained in more detail below in two embodiments with reference to the accompanying drawings. Show it:
  • FIG. 1 a first embodiment of a relay according to the invention in a longitudinal sectional view,
  • FIG. 2 A second embodiment of a relay according to the invention in a longitudinal sectional view.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Identische bzw. gleichwirkende Bauteile sind mit gleichen Bezugszahlen bezeichnet.Identical or equivalent components are designated by the same reference numerals.

Figur 1 zeigt ein erstes Ausführungsbeispiel eines erfindungsgemäßen Relais 10, insbesondere für eine Startvorrichtung einer Brennkraftmaschine. Das Relais 10 weist eine Relaisspule 13 auf, an der ein Magnetkern 16 angeordnet ist. Die Relaisspule 13 ist in ein Gehäuse 19 eingesetzt. Der Relaisspule 13 ist ein beweglicher Magnetanker 22 zugeordnet, mit dem ein Stößel 25 fest verbunden ist. In einer Durchgangsöffnung 28 des Magnetkerns 16 ist eine Schaltstange 31 mittels eines hülsenförmigen Elements 34 aus Isolierstoff axial geführt, das gleichzeitig als Aufnahme für ein Kontaktelement 37 dient. Mit der Schaltstange 31 ist auch das Kontaktelement 37 in der Durchgangsöffnung 28 axial verschiebbar. Erreicht das Kontaktelement 37 eine Endlage, so gelangt es in Kontakt mit Gegenkontakten 40 des Relais. Durch den Kontakt des Kontaktelements 37 mit den Gegenkontakten 40 wird ein Stromkreis eines nicht dargestellten Startermotors geschlossen, so daß der Startermotor über das Kontaktelement 37 von einer Batterie bestromt werden kann. FIG. 1 shows a first embodiment of a relay 10 according to the invention, in particular for a starting device of an internal combustion engine. The relay 10 has a relay coil 13, on which a magnetic core 16 is arranged. The relay coil 13 is inserted into a housing 19. The relay coil 13 is associated with a movable armature 22, with which a plunger 25 is fixedly connected. In a through hole 28 of the magnetic core 16, a shift rod 31 is axially guided by means of a sleeve-shaped member 34 made of insulating material, which also serves as a receptacle for a contact element 37. With the shift rod 31 and the contact element 37 in the through hole 28 is axially displaceable. If the contact element 37 reaches an end position, it comes into contact with it Mating contacts 40 of the relay. By the contact of the contact element 37 with the mating contacts 40, a circuit of a starter motor, not shown, is closed, so that the starter motor can be energized via the contact element 37 of a battery.

Wird die Relaispule 13 bestromt, so wird der Magnetanker 22 durch ein Magnetfeld, das über das Gehäuse 19 und den Magnetkern 16 sowie den Magnetanker 22 verläuft, in die Relaisspule 13 eingezogen, bis er an einer Stirnfläche des Magnetkerns 16 anliegt. Diese Einzugsbewegung bestimmt eine Einschaltrichtung. Der Stößel 25 wird damit in Richtung der Schaltstange 31 bewegt und gelangt schließlich mit einer freien Stirnfläche 43 der Schaltstange 31 in Berührung und übt so auf die Schaltstange 31 und das mit dieser verbundene Kontaktelement 37 eine Schubkraft aus, siehe Figur 2.When the relay coil 13 is energized, the magnet armature 22 is drawn into the relay coil 13 by a magnetic field that passes through the housing 19 and the magnetic core 16 and the armature 22 until it bears against an end face of the magnetic core 16. This pull-in movement determines a switch-on direction. The plunger 25 is thus moved in the direction of the shift rod 31 and finally comes into contact with a free end face 43 of the shift rod 31 and thus exerts on the shift rod 31 and the contact element 37 connected thereto a thrust, see FIG. 2 ,

Im Relais 10 ist ein Kupplungselement 46 vorgesehen, das die Schaltstange 31 und den Magnetanker 22 miteinander begrenzt verschiebbar verbindet. Wie aus Figur 1 erkennbar ist, ist das Kupplungselement 46 derart angeordnet, daß der Magnetanker 22 in eine Rückstellrichtung, die der Einschaltrichtung entgegengesetzt ist, gegenüber der Schaltstange 31 begrenzt verschiebbar ist. In den Ausführungsbeispielen nach Figur 1 und Figur 2 wird dies dadurch erreicht, daß einerseits das Kupplungselement 46 mit der Schaltstange 31 nicht verschiebbar verbunden ist und andererseits das Kupplungselement 46 einen Vorsprung 49 hat, der einen korrespondierenden Gegenvorsprung 52 am Stößel 25 hintergreift. Der Gegenvorsprung 52 ist zwischen dem Vorsprung 49 und der freien Stirnfläche 43 frei verschiebbar. In beiden Beispielen ist die Schaltstange 31 mit dem Kupplungselement 46 mittels einer Schnappverbindung 55 verbunden. In beiden Ausführungsbeispielen umgibt das Kupplungselement 46 die Schaltstange 31 und den Stößel 25 jeweils teilweise und durch die im wesentlichen zylindrische Form des Kupplungselements 46 umgibt das Kupplungselement 46 die Schaltstange 31 und den Stößel 25 hülsenförmig.In the relay 10, a coupling element 46 is provided, which connects the shift rod 31 and the armature 22 slidably limited. How out FIG. 1 can be seen, the coupling element 46 is arranged such that the magnet armature 22 in a return direction, which is opposite to the turn-on, relative to the shift rod 31 is limitedly displaceable. In the embodiments according to FIG. 1 and FIG. 2 This is achieved in that on the one hand, the coupling element 46 is not slidably connected to the shift rod 31 and on the other hand, the coupling element 46 has a projection 49 which engages behind a corresponding counter-projection 52 on the plunger 25. The counter projection 52 is freely displaceable between the projection 49 and the free end face 43. In both examples, the shift rod 31 is connected to the coupling element 46 by means of a snap connection 55. In both embodiments, the coupling element 46 surrounds the shift rod 31 and the plunger 25th each partially and by the substantially cylindrical shape of the coupling element 46, the coupling element 46 surrounds the shift rod 31 and the plunger 25 sleeve-shaped.

In beiden Ausführungsbeispielen ist ein Federelement 58 vorgesehen, das sich an einem Endabschnitt 61 des Kupplungselements 46, welcher Magnetanker 22 abgewandt ist, abstützt und das Kontaktelement 37 in eine vom Kupplungselement 46 entfernte Stellung drückt. Bevor das Kontaktelement 37 die beiden Gegenkontakte 40 elektrisch verbindet, wird diese entfernte Stellung durch einen mit der Schaltstange 31 fest verbundenen Anschlag 64 bestimmt, siehe auch Figur 1. Befindet sich dagegen die Schaltstange 31 in Einschaltstellung, so wird die vom Kupplungselement 46 entfernte Stellung durch die Gegenkontakte 40 bestimmt. In Figur 1 stützt sich dabei das Federelement 58 auf einer Innenseite des hülsenförmigen Elements 34 und andererseits an einer Stirnfläche des Endabschnitts 61 des Kupplungselements 46 ab. Im Unterschied dazu, stützt sich das besagte Federelement 58 im Ausführungsbeispiel nach Figur 2 an einem Bund 67 des Kupplungselements 46 ab.In both embodiments, a spring element 58 is provided, which is at one end portion 61 of the coupling element 46, which armature 22 is remote, and supports the contact element 37 in a position remote from the coupling element 46 position. Before the contact element 37 connects the two mating contacts 40 electrically, this remote position is determined by a fixedly connected to the shift rod 31 stop 64, see also FIG. 1 , By contrast, the shift rod 31 is in closed position, the remote from the coupling element 46 position is determined by the mating contacts 40. In FIG. 1 In this case, the spring element 58 is supported on an inner side of the sleeve-shaped element 34 and on the other hand on an end face of the end section 61 of the coupling element 46. In contrast, the said spring element 58 is supported in the embodiment according to FIG. 2 on a collar 67 of the coupling element 46 from.

Damit das Kupplungselement 46 die Schaltstange 31 in der Durchgangsöffnung 28 des Magnetkerns 16 führen kann, ist der Endabschnitt 61 des Kupplungselements 46 in seinem Außendurchmesser so vergrößert, daß sich eine geeignete Passung zwischen Endabschnitt 61 und Durchgangsöffnung 28 ergibt. Für den gleichen Zweck ist im zweiten Ausführungsbeispiel das Kupplungselement 46 so hülsenförmig erweitert, daß einerseits innerhalb einer hülsenförmigen Erweiterung 70 das Federelement 58 aufgenommen ist und andererseits die hülsenförmige Erweiterung 70 einen geeigneten Außendurchmesser aufweist, so daß sich eine passende Führung des Kupplungselements 46 in der Durchgangsöffnung 28 ergibt.So that the coupling element 46 can guide the switching rod 31 in the passage opening 28 of the magnetic core 16, the end portion 61 of the coupling element 46 is enlarged in its outer diameter so that a suitable fit between the end portion 61 and passage opening 28 results. For the same purpose, the coupling element 46 is so expanded sleeve-shaped in the second embodiment, that on the one hand within a sleeve-shaped extension 70, the spring element 58 is added and on the other hand, the sleeve-shaped extension 70 has a suitable outer diameter, so that a suitable guidance of the coupling element 46 in the passage opening 28 results.

Während eines Anlaßvorgangs wird der Magnetanker 22 in die Relaisspule 13 eingezogen und drückt mit seinem Stößel 25 auf die Schaltstange 31. Das mit der Schaltstange 31 verbundene Kupplungselement 46 drückt wiederum über das Federelement 58 und das hülsenförmige Element 34 das Kontaktelement 37 gegen die beiden Gegenkontakte 40. In ungünstigen Schaltzuständen kann es dabei zum Verschweißen zwischen dem Kontaktelement 37 und den Gegenkontakten 40 kommen. Durch dieses Verschweißen ist unter ungünstigen Umständen beim bekannten Relais selbst nach dem Öffnen eines Startschalters und damit der nachlassenden Kraft zwischen Stößel 25 und Schaltstange 31 und der Kraft einer Kontaktrückstellfeder 71 der Startermotor unnötig lange bestromt, was zu Überlastung und schließlich zum Ausfall des Startermotors führen kann. Wird dagegen beim erfindungsgemäßen Relais 10 der Startschalter geöffnet, so wird wie beim bekannten Relais 10 die Bestromung der Relaisspule zunächst 13 beendet. Der Magnetanker 22 wird daraufhin durch eine Rückstellkraft, in seine Ausgangslage gedrückt. Die Rückstellkraft kann beispielsweise, wie in beiden Ausführungsbeispielen gezeigt, durch eine Rückstellfeder 73 innerhalb des Magnetankers 22 erzeugt werden. Der durch die Rückstellkraft schließlich beschleunigte Mangetanker 22 nimmt in dem erfindungsgemäßen Relais 10 über das Kupplungselement 46 die Schaltstange 31 und diese über den Anschlag 64 das Kontaktelement 37 mit und reißt es schließlich von den beiden Gegenkontakten 40 los. Dazu weist der Stößel 25 einen Stößelbund 76 auf, der bei Bewegung des Magnetankers 22 in Rückstellrichtung das Kupplungselement 46 an seinem Vorsprung 49 mitnimmt. Ein Impuls wird somit über das Kupplungselement 46 und die Schnappverbindung 55 auf die Schaltstange 31 und dann über den Anschlag 64 auf das Kontaktelement 37 übertragen und somit dieses Kontaktelement 37 von den Gegenkontakten 40 schlagartig losgerissen.During a starting operation, the armature 22 is retracted into the relay coil 13 and pushes with its plunger 25 on the shift rod 31. The connected to the shift rod 31 coupling element 46 in turn pushes the spring member 58 and the sleeve-shaped member 34, the contact member 37 against the two mating contacts 40th In unfavorable switching states, welding between the contact element 37 and the mating contacts 40 may occur. By this welding is energized under unfavorable circumstances in the known relay even after opening a start switch and thus the declining force between plunger 25 and shift rod 31 and the force of a contact return spring 71, the starter motor unnecessarily long, which can lead to overload and eventually failure of the starter motor , If, on the other hand, the start switch is opened in the case of the relay 10 according to the invention, the energization of the relay coil is first terminated as in the case of the known relay 10. The magnet armature 22 is then pressed by a restoring force in its initial position. The restoring force can be generated, for example, as shown in both embodiments by a return spring 73 within the armature 22. The finally accelerated by the restoring force Mangetanker 22 takes in the relay 10 according to the invention via the coupling element 46, the shift rod 31 and this via the stop 64, the contact element 37 and finally tears it from the two mating contacts 40 going on. For this purpose, the plunger 25 on a ram collar 76 which carries the coupling element 46 at its projection 49 upon movement of the armature 22 in the return direction. A pulse is thus transmitted via the coupling element 46 and the snap connection 55 on the shift rod 31 and then via the stop 64 on the contact element 37 and Thus, this contact element 37 is suddenly torn off from the mating contacts 40.

Alternativ zu den beiden Ausführungsbeispielen ist es auch möglich, daß das Kupplungselement 46 einem radial nach außen gerichteten Vorsprung 49 aufweist, der einen zum Gegenvorsprung 52 des Stößels 25 äquivalenten Gegenvorsprung 52 in einer Ausnehmung 79 des Magnetankers 22 hintergreift. In diesem Fall ist die Rückstellkraft beispielsweise dadurch zu erzeugen, daß außerhalb des Magnetankers 22 ein Federelement diese Rückstellkraft erzeugt.As an alternative to the two embodiments, it is also possible that the coupling element 46 has a radially outwardly directed projection 49 which engages behind a counter projection 52 of the plunger 25 equivalent counter-projection 52 in a recess 79 of the armature 22. In this case, the restoring force is generated, for example, by the fact that outside the magnet armature 22, a spring element generates this restoring force.

Das Kupplungselement 46 nach Figur 1 stellt ein Spritzgußteil aus Kunststoff dar. Das Kupplungselement 46 nach Figur 2 ist eine aus Blech hergestellte Variante, die durch Rollen eines Blechstreifens hergestellt ist.The coupling element 46 after FIG. 1 represents an injection molded part made of plastic. The coupling element 46 according to FIG. 2 is a variant made of sheet metal, which is made by rolling a sheet metal strip.

Claims (14)

  1. Relay, in particular for a starting apparatus of an internal combustion engine, having a relay coil (13) and having a magnet armature (22) which can be moved by supplying power to the relay coil (13), and having a contact element (37) which can be operated by the magnet armature (22), with a switching rod (31) being arranged on the contact element (37), characterized in that a coupling element (46) is provided which connects the switching rod (31) and the magnet armature (22) such that they can be displaced in a limited manner in relation to one another.
  2. Relay according to Claim 1, characterized in that the magnet armature (22) is moved in a switch-on direction of the relay (10), by supplying power to the relay coil (13), in such a way that the contact element (37) comes into contact with mating contacts of the relay (10).
  3. Relay according to Claim 2, characterized in that the magnet armature (22) is subjected to a restoring force which acts in the return direction against the switch-on direction of the relay (10).
  4. Relay according to Claim 3, characterized in that the coupling element (46) is arranged in such a way that the magnet armature (22) can be displaced in a limited manner in relation to the switching rod (31) in the return direction.
  5. Relay according to one of the preceding claims, characterized in that the switching rod (31) has a free end face (43) which serves as a stop for a tappet (25) which is fixed to the magnet armature (22).
  6. Relay according to Claim 5, characterized in that the coupling element (46) in each case partially surrounds the switching rod (31) and the tappet (25).
  7. Relay according to Claim 5 or 6, characterized in that the coupling element (46) surrounds the switching rod (31) and the tappet (25) in the manner of a sleeve.
  8. Relay according to one of the preceding claims, characterized in that the coupling element (46) and the switching rod (31) are fixed axially in relation to one another.
  9. Relay according to one of the preceding claims, characterized in that the switching rod (31) is connected to the coupling element (46) by means of a snap-action connection (55).
  10. Relay according to one of the preceding claims, characterized in that the coupling element (46) guides the switching rod (31) through the magnet armature (22) in a passage opening (28).
  11. Relay according to one of Claims 5 to 7,
    characterized in that the coupling element (46) has at least one projection (49) which engages behind a corresponding mating projection (52) on the tappet (25) or magnet armature (22).
  12. Relay according to one of Claims 5 to 11,
    characterized in that the tappet (25) has a tappet collar (76).
  13. Relay according to one of the preceding claims, characterized in that a spring element (58) is provided which is supported against an end section (61) of the coupling element (46), which end section is averted from the magnet armature (22), and pushes the contact element (37) into a position which is remote from the coupling element (46).
  14. Relay according to Claim 13, characterized in that the spring element (58) is supported against a collar (67) of the coupling element (46).
EP00981149A 1999-10-23 2000-10-20 Relay, in particular for a starting device Expired - Lifetime EP1145267B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19951116A DE19951116A1 (en) 1999-10-23 1999-10-23 Relay for internal combustion engine starting device, has coupling member connecting control rod to armature with limited displacement
DE19951116 1999-10-23
PCT/DE2000/003704 WO2001031668A1 (en) 1999-10-23 2000-10-20 Relay, in particular for a starting device

Publications (2)

Publication Number Publication Date
EP1145267A1 EP1145267A1 (en) 2001-10-17
EP1145267B1 true EP1145267B1 (en) 2009-08-19

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ID=7926652

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Application Number Title Priority Date Filing Date
EP00981149A Expired - Lifetime EP1145267B1 (en) 1999-10-23 2000-10-20 Relay, in particular for a starting device

Country Status (9)

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US (1) US6693503B1 (en)
EP (1) EP1145267B1 (en)
JP (1) JP4465139B2 (en)
KR (1) KR100747422B1 (en)
BR (1) BRPI0007248B1 (en)
DE (2) DE19951116A1 (en)
ES (1) ES2329544T3 (en)
MX (1) MXPA01006433A (en)
WO (1) WO2001031668A1 (en)

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CA2569064C (en) * 2005-03-28 2011-08-02 Matsushita Electric Works, Ltd. Contact device
DE102007014764A1 (en) 2007-03-28 2008-06-12 Robert Bosch Gmbh Solenoid switch for starters of internal combustion engines, has relay housing, which has relay cover of plastic at front side, in which relay connections are intended
US7728704B2 (en) 2007-06-07 2010-06-01 Trombetta, Llc Method for reducing continuous charge
PT2365988E (en) 2008-08-22 2015-10-22 Relypsa Inc Crosslinked cation exchange polymers, compositions and use in treating hyperkalemia
DE102009001725A1 (en) 2009-03-23 2010-09-30 Robert Bosch Gmbh Starting relay of a starting device for internal combustion engines
DE102009001729A1 (en) 2009-03-23 2010-10-14 Robert Bosch Gmbh Relay, in particular starting relay for internal combustion engines and method for its production
DE102009027844A1 (en) * 2009-07-20 2011-01-27 Robert Bosch Gmbh Switching relay with contact tearing device
DE102009047136A1 (en) 2009-11-25 2011-05-26 Robert Bosch Gmbh Switching device i.e. start relay, for start device of internal combustion engine of vehicle, has switching surface of contact bridge or counter contact provided with non-metallic layer, where contact and bridge are made of contact metal
US8729984B2 (en) * 2011-06-06 2014-05-20 Rockwell Automation Technologies, Inc. Magnetic actuator with more than one air gap in series
CN103094010A (en) * 2011-11-03 2013-05-08 博世汽车部件(长沙)有限公司 Starter electromagnetic switch and starter comprising the same
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KR200488063Y1 (en) 2014-06-30 2018-12-10 엘에스산전 주식회사 Relay
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CN105023807B (en) * 2015-06-01 2018-02-16 上海法雷奥汽车电器系统有限公司 Electromagnetic switch and the starter using the electromagnetic switch
CN105609375A (en) * 2016-03-16 2016-05-25 上海法雷奥汽车电器系统有限公司 Electromagnetic switch and starter employing same
CN105679609B (en) * 2016-03-25 2019-07-09 上海法雷奥汽车电器系统有限公司 A kind of electromagnetic switch and the starter using the electromagnetic switch

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Publication number Publication date
DE19951116A1 (en) 2001-04-26
ES2329544T3 (en) 2009-11-27
JP2003513412A (en) 2003-04-08
BRPI0007248B1 (en) 2015-12-15
EP1145267A1 (en) 2001-10-17
MXPA01006433A (en) 2002-06-21
JP4465139B2 (en) 2010-05-19
KR100747422B1 (en) 2007-08-09
US6693503B1 (en) 2004-02-17
BR0007248A (en) 2001-10-30
KR20010089666A (en) 2001-10-08
DE50015721D1 (en) 2009-10-01
WO2001031668A1 (en) 2001-05-03

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