EP0518179B1 - Electrical switch - Google Patents

Electrical switch Download PDF

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Publication number
EP0518179B1
EP0518179B1 EP92109261A EP92109261A EP0518179B1 EP 0518179 B1 EP0518179 B1 EP 0518179B1 EP 92109261 A EP92109261 A EP 92109261A EP 92109261 A EP92109261 A EP 92109261A EP 0518179 B1 EP0518179 B1 EP 0518179B1
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EP
European Patent Office
Prior art keywords
rocker
latching
housing
switching
electrical switch
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
EP92109261A
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German (de)
French (fr)
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EP0518179A2 (en
EP0518179A3 (en
Inventor
Volker Gerrath
Andreas Stoffel
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ABB Patent GmbH
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ABB Patent GmbH
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Publication date
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Publication of EP0518179A2 publication Critical patent/EP0518179A2/en
Publication of EP0518179A3 publication Critical patent/EP0518179A3/en
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Publication of EP0518179B1 publication Critical patent/EP0518179B1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02Details
    • H01H21/12Bases; Stationary contacts mounted thereon

Definitions

  • the invention relates to an electrical switch according to the preamble of claim 1.
  • a switch of the type mentioned is known from DE-A-22 19 820, which shows a keyboard switch which has a contact arrangement designed as a reed contact.
  • CH-A-428 896 which is also provided as a keyboard switch and has a contact arrangement, the actuation of which takes place parallel to the extension plane of its operating part.
  • Switches are used to interrupt electrical circuits. With regard to the design of the switches, care must be taken that the elements involved in the interruption, the fixed and movable contact pieces, have a switching path which is sufficient with regard to the voltage and current load present, in order to ensure a safe interruption and thus when the contact pieces are separated to avoid arcing, if any, or to extinguish it.
  • control panel is designed as a spring-back rocker with a pivot axis, the pivot axis of the rocker being arranged off-center, preferably at a rocker end, and that the rocker end opposite the pivot axis is in engagement with the housing and from a first end position in a second end position is movable and vice versa, which end positions each correspond to a switching position.
  • a locking arm is arranged on the rocker end opposite the pivot axis, which interacts with a locking lug fixed to the housing.
  • the interaction of the locking arm with the locking lug takes place in such a way that when the rocker is actuated, the elastically designed locking arm first slides along the ramp-like locking lug until it engages behind the locking lug in a form-fitting manner.
  • a projection is arranged on its outside, which allows the locking between the locking arm and the locking lug to be released by pressing or pulling it, that is, to overcome the locking force effective in the locking.
  • a further embodiment of the invention provides that a resilient locking pin, which runs parallel to the longitudinal axis of the rocker and which engages in locking marks which are arranged on the housing, is arranged on the rocker end opposite the pivot axis.
  • the spring action of the locking pin can be provided on the one hand by a spring provided for this purpose, for example a compression spring, but it can also be provided on the basis of appropriate utilization of the material elasticity.
  • the locking marks are preferably hollows molded into the housing, in which the locking pin engages in a form-fitting manner.
  • the troughs and the corresponding end of the locking pin are each beveled in their edge regions, so as to enable the locking pin to slide into the trough and out of the trough, albeit with a certain force, without damaging the pin.
  • a likewise preferred embodiment of the invention provides that a switching link is arranged on the rocker end opposite the pivot axis, which operates together with a switching pin guided on the housing.
  • This switching pin can be connected to a disk guided in a housing recess, but according to another embodiment, it can also be arranged on a pivot arm articulated on the housing. In both cases, it is provided according to the invention that the switching pin moves transversely to the direction of movement of the corresponding rocker end when the rocker is actuated due to the guidance originating from the backdrop.
  • the link in which the switching pin engages has a first switching position and a second switching position, which are connected via a loop-shaped guide for the switching pin.
  • the rocker is preferably provided at one end with an axis of rotation which is mounted in the housing. This ensures stable rocker mounting.
  • 1.1 shows a detail of an electrical switch 10 which has a housing 12 in which a contact arrangement 14, consisting of a movable contact piece 16 and a fixed contact piece 18, is arranged.
  • the movable contact piece 16 is located on a contact carrier 17 which is displaceably guided in a vertically arranged contact path 15 belonging to the contact arrangement 14. Further details, such as the power supply lines, contact springs and the like, are not shown.
  • the housing 12 of the switch 10 is closed at the top by a rocker 20 which has a pivot axis 22 which is arranged on the side of the housing 12 on which the contact arrangement 14 is located.
  • the pivot axis is provided as a continuous shaft which penetrates the rocker transversely to the direction of movement of the displaceable contact carrier 17 and the ends of which are mounted in the housing 12.
  • a nose-like projection 24 is formed on the outside of the rocker 20 and serves as a hand lever for actuating the rocker 20. With the help of this projection 24, it is possible to pivot the rocker 20 from the rest position shown in FIG. 1.1, that is to say in the off position, about the pivot axis 22 in the on position and back.
  • a switching cam 26, which is arranged on the inside of the rocker 20 and serves to act upon the sliding contact carrier 17, is designed in a dome-like manner with regard to the change in its point of contact on the sliding contact carrier 17 resulting from the pivoting movement of the rocker 20.
  • a hook-shaped latch arm 28 is arranged on its inside.
  • the locking arm 28 can be integrally connected to the rocker or anchored in it in a form-fitting manner.
  • the latching arm 28 With its hook-like projection 29, the latching arm 28 bears against the inside of the housing wall 13, it being in the rest position shown in FIG. 1.1, that is to say the switch-off position, above a latching lug 30 molded onto the housing wall 13.
  • FIG. 2.1 shows a switch 10 similar to that in FIGS. 1.1 and 1.2, the essential difference of which compared to the switch 10 shown there is the changed design of the latching.
  • the latching in the switch 10 shown in FIGS. 2.1 and 2.2 is effected by means of a resiliently arranged locking pin 27 , which is arranged on the inside of the rocker 20.
  • the locking pin 27 engages in trough-like recesses 32 in the side wall 13 of the housing 12, its spring action either being due to the material-dependent elasticity or by being axially displaceable, as shown in the example, by a compression spring 271.
  • the shape of the locking troughs 32 and the end of the locking pin 27 engaging in the locking troughs 32 are selected such that on the one hand a stable end position of the rocker 20 is maintained, but on the other hand a change in position is possible without great application of force, in particular without risk of damage to the locking pin 27.
  • FIG. 2.1 While the switch-off position of the switch 10 is shown in FIG. 2.1, the switch-on position of the switch 10 is shown in FIG. 2.2, in which the rocker 20 is inclined to the left and the locking pin 27 engages in the lower of the two locking recesses 32.
  • FIGS. 3.1 and 3.2 each show a switch 11, which differs from the switches shown in FIGS. 1 and 2 both in a different design of the rocker 21 and in the type of latching.
  • the other features of the switch 11 correspond to those of the switch 10, so that the corresponding reference numerals have also been used here. With regard to their meaning and mode of action, reference is made to the corresponding description for FIGS. 1 and 2.
  • the rocker 21 of the switch 11 has a dome 23 on its outside opposite the pivot axis 22, which serves as an operating field.
  • a latching device 25 is arranged on the rocker 21 on the inside opposite the pivot axis 22, which engages with a pin 38 which is attached to a holding pin articulated to the housing, more precisely to a molded pin on the inside of the side wall 13 33 pivotally mounted pivot arm 34 is attached.
  • this latching device 25 The more detailed design and the mode of operation of this latching device 25 can be seen from FIG. 3.3.
  • switch 11 While switch 11 is shown in its switched-off position in FIG. 3.1, the switched-on position is shown in FIG. 3.2.
  • Fig. 3.3 is a partial side view according to section line II in Fig. 3.1, from which it can be seen that the pin 38 attached to the pivot arm 34 is guided in a link 35. 3.3, the pin is in a first switching position.
  • the locking device 25 attached to it moves downward, so that the pin 38 comes to rest against the approximately V-shaped locking edge 36 located above it and is pushed to the side by it.
  • the backdrop-like configuration of the latching device 25 causes the pin 38 to engage in the latching edge 36 when the rocker is moving in the opposite direction, for example when it is released, where it assumes a second switching position.
  • the pin 38 is also laterally displaced due to the link guide and withdrawn from engagement with the latching edge 36, so that it can return to the first switching position.
  • 4.1 also shows a switch 11 with a rocker 21, which differs from the embodiment of the switch 11 shown in FIG. 3 by a variant of the pin guide.
  • the pin 38 is attached to a disk 35 which, in a box-shaped guide 19 with an elongated hole 39, is formed on the side wall 13 of the housing 12. through which the pin 38 is inserted and engages with its free end in the locking device 25, while the disk 35 connected to it is guided in the box groove 19.
  • FIG. 4.2 shows a section of the configuration of the latching along the section line x-x in FIG. 4.1, from which the assignment of the individual parts can be seen.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die Erfindung betrifft einen elektrischen Schalter gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an electrical switch according to the preamble of claim 1.

Ein Schalter der eingangs genannten Art ist bekannt geworden durch die DE-A-22 19 820, worin ein Tastaturschalter gezeigt ist, der eine als Reedkontakt ausgebildete Kontaktanordnung aufweist.A switch of the type mentioned is known from DE-A-22 19 820, which shows a keyboard switch which has a contact arrangement designed as a reed contact.

Einen ähnlichen Schalter zeigt die CH-A-428 896, der ebenfalls als Tastaturschalter vorgesehen ist und eine Kontaktanordnung aufweist, deren Betätigung parallel zur Erstreckungsebene seines Bedienungsteils erfolgt.A similar switch is shown in CH-A-428 896, which is also provided as a keyboard switch and has a contact arrangement, the actuation of which takes place parallel to the extension plane of its operating part.

Schalter werden eingesetzt zur Unterbrechung von Stromkreisen. Hinsichtlich der Ausgestaltung der Schalter ist darauf zu achten, daß die an der Unterbrechung beteiligten Elemente, die festen und beweglichen Kontaktstücke, einen im Hinblick auf die vorhandene Spannung und Strombelastung ausreichenden Schaltweg aufweisen, um eine sichere Unterbrechung zu gewährleisten und so bei der Trennung der Kontaktstücke gegebenenfalls auftretende Lichtbögen zu vermeiden bzw. zum Erlöschen zu bringen.Switches are used to interrupt electrical circuits. With regard to the design of the switches, care must be taken that the elements involved in the interruption, the fixed and movable contact pieces, have a switching path which is sufficient with regard to the voltage and current load present, in order to ensure a safe interruption and thus when the contact pieces are separated to avoid arcing, if any, or to extinguish it.

Andererseits besteht häufig das Bedürfnis, den Betätigungsweg gering zu halten, um so den Schaltvorgang zu beschleunigen und beispielsweise Ansprechzeiten eines elektrischen Gerätes zu verkürzen.On the other hand, there is often a need to keep the actuation path short so as to accelerate the switching process and, for example, shorten response times of an electrical device.

Hiervon ausgehend ist es Aufgabe der Erfindung, einen elektrischen Schalter der eingangs genannten Art zu schaffen, der bei möglichst kurzem Schaltweg des Bedienteils eine ausreichende elektrische Funktion des Schalters ermöglicht.Proceeding from this, it is an object of the invention to provide an electrical switch of the type mentioned at the outset which, with the shortest possible switching path of the control panel, enables the switch to have an adequate electrical function.

Die Lösung der Aufgabe besteht in den Merkmalen des Patentanspruchs 1.The solution to the problem consists in the features of patent claim 1.

Danach ist vorgesehen, daß das Bedienteil als rückfedernde Wippe mit einer Schwenkachse ausgebildet ist, wobei die Schwenkachse der Wippe außermittig, vorzugsweise an einem Wippenende, angeordnet ist, und daß das der Schwenkachse entgegengesetzte Wippenende mit dem Gehäuse in Eingriff steht und von einer ersten Endstellung in eine zweite Endstellung bewegbar ist und umgekehrt, welche Endstellungen jeweils einer Schaltstellung entsprechen.Thereafter, it is provided that the control panel is designed as a spring-back rocker with a pivot axis, the pivot axis of the rocker being arranged off-center, preferably at a rocker end, and that the rocker end opposite the pivot axis is in engagement with the housing and from a first end position in a second end position is movable and vice versa, which end positions each correspond to a switching position.

Während bei Wippschaltern im Stand der Technik die Schwenkachse mittig, d. h. in der Mitte der beiden großen Schwenkarme, angeordnet ist, ist gemäß der Erfindung die Schwenkachse außermittig, nämlich an einem Wippenende angeordnet.While in the prior art rocker switches the pivot axis in the center, i. H. is arranged in the middle of the two large swivel arms, according to the invention the swivel axis is arranged off-center, namely at a rocker end.

Gemäß einer zweckmäßigen Ausgestaltung des Schalters ist hinsichtlich der Fixierung der Wippe in der jeweiligen Endstellung vorgesehen, daß an dem der Schwenkachse entgegengesetzten Wippenende ein Rastarm angeordnet ist, der mit einer gehäusefesten Rastnase zusammenarbeitet.According to an expedient embodiment of the switch, with regard to the fixing of the rocker in the respective end position, it is provided that a locking arm is arranged on the rocker end opposite the pivot axis, which interacts with a locking lug fixed to the housing.

Das Zusammenwirken des Rastarms mit der Rastnase erfolgt derart, daß bei Betätigung der Wippe der elastisch ausgebildete Rastarm zunächst auf der rampenartig gestalteten Rastnase entlanggleitet, bis er am Ende der Rastnase diese formschlüssig hintergreift.The interaction of the locking arm with the locking lug takes place in such a way that when the rocker is actuated, the elastically designed locking arm first slides along the ramp-like locking lug until it engages behind the locking lug in a form-fitting manner.

Zur Rückstellung der Wippe in die Ausgangsstellung ist an ihrer Außenseite ein Vorsprung angeordnet, der es gestattet, durch Drücken oder Ziehen daran die Verrastung zwischen Rastarm und Rastnase zu lösen, das heißt, die in der Verrastung wirksame Rastkraft zu überwinden.To return the rocker to the starting position, a projection is arranged on its outside, which allows the locking between the locking arm and the locking lug to be released by pressing or pulling it, that is, to overcome the locking force effective in the locking.

Eine weitere Ausgestaltung der Erfindung sieht vor, daß an dem der Schwenkachse entgegengesetzten Wippenende ein parallel zur Längsachse der Wippe geführter federnder Raststift angeordnet ist, der in Rastmarken eingreift, welche am Gehäuse angeordnet sind.A further embodiment of the invention provides that a resilient locking pin, which runs parallel to the longitudinal axis of the rocker and which engages in locking marks which are arranged on the housing, is arranged on the rocker end opposite the pivot axis.

Die Federwirkung des Raststiftes kann einerseits durch eine eigens hierfür vorgesehene Feder, zum Beispiel Druckfeder erfolgen, sie kann aber auch aufgrund entsprechender Ausnutzung der Materialelastizität vorgesehen sein.The spring action of the locking pin can be provided on the one hand by a spring provided for this purpose, for example a compression spring, but it can also be provided on the basis of appropriate utilization of the material elasticity.

Die Rastmarken sind vorzugsweise im Gehäuse eingeformte Mulden, in welche der Raststift formschlüssig eingreift. Die Mulden und das korrespondierende Ende des Raststiftes sind in ihren Randbereichen jeweils angeschrägt, um so ein Gleiten, wenn auch mit gewisser Kraft, des Raststiftes auf der Gehäuseflache in die Mulde und aus der Mulde heraus zu ermöglichen, ohne den Stift zu beschädigen.The locking marks are preferably hollows molded into the housing, in which the locking pin engages in a form-fitting manner. The troughs and the corresponding end of the locking pin are each beveled in their edge regions, so as to enable the locking pin to slide into the trough and out of the trough, albeit with a certain force, without damaging the pin.

Eine ebenfalls bevorzugte Ausgestaltung der Erfindung sieht vor, daß an dem der Schwenkachse entgegengesetzten Wippenende eine Schaltkulisse angeordnet ist, welche mit einem am Gehäuse geführten Schaltzapfen zusammenarbeitet. Dieser Schaltzapfen kann mit einer in einer Gehäuseausnehmung geführten Scheibe verbunden sein, der kann aber auch gemäß einer anderen Ausgestaltung an einem am Gehäuse angelenkten Schwenkarm angeordnet sein. In beiden Fällen ist gemäß der Erfindung vorgesehen, daß sich der Schaltzapfen bei Betätigung der Wippe quer zur Bewegungsrichtung des korrespondierenden Wippenendes bewegt aufgrund der von der Kulisse herrührenden Führung.A likewise preferred embodiment of the invention provides that a switching link is arranged on the rocker end opposite the pivot axis, which operates together with a switching pin guided on the housing. This switching pin can be connected to a disk guided in a housing recess, but according to another embodiment, it can also be arranged on a pivot arm articulated on the housing. In both cases, it is provided according to the invention that the switching pin moves transversely to the direction of movement of the corresponding rocker end when the rocker is actuated due to the guidance originating from the backdrop.

Die Kulisse, in welche der Schaltzapfen eingreift, besitzt hierbei eine erste Schaltposition und eine zweite Schaltposition, die über eine schleifenförmig gestaltete Führung für den Schaltzapfen verbunden sind. Diese Gestaltung hat zur Folge, daß bei Betätigung, das heißt Niederdrücken, der selbsttätig rückfedernden Wippe der Schaltzapfen aus seiner jeweiligen Ruhelage in der ersten oder zweiten Schaltposition in der Kulisse abhebt und aufgrund der schleifenförmigen Führung in der Kulisse dieser folgend in die jeweils andere Schaltposition gelangt.The link in which the switching pin engages has a first switching position and a second switching position, which are connected via a loop-shaped guide for the switching pin. The result of this design is that when actuated, that is to say depressed, the automatically resilient rocker of the switching pin lifts out of its respective rest position in the first or second switching position in the setting and, due to the loop-shaped guidance in the setting, this subsequently arrives in the other switching position .

Im Unterschied gegenüber den zuvor behandelten Lösungsvarianten mit der Rastnase bzw. den Rastmarken genügt bei der erfindungsgemäßen Ausgestaltung des Schalters mit einer Kulissenführung, die Wippe niederzudrücken und loszulassen. Eine zusätzliche Gegenkraft zur Rückstellung der Wippe ist hierbei nicht erforderlich.In contrast to the previously discussed solution variants with the latching lug or the latching marks, it is sufficient in the embodiment of the switch according to the invention with a link guide to depress and release the rocker. An additional counterforce to reset the rocker is not required.

In bevorzugter Weise ist die Wippe an einem Ende mit einer Drehachse versehen, die im Gehäuse gelagert ist. Hierdurch wird eine stabile Lagerung der Wippe erreicht.The rocker is preferably provided at one end with an axis of rotation which is mounted in the housing. This ensures stable rocker mounting.

Gemäß einer weiteren Lösung kann vorgesehen sein, anstelle einer Drehachse die Wippe mittels Filmscharnier am Gehäuse anzuschließen, wobei über die Dicke des Filmscharniers gleichzeitig auch die Rückstellkraft für die Wippe einstellbar ist. Ein weiterer Vorteil dieser Lösung besteht darin, daß sowohl das Gehäuse als auch die Wippe einstückig, das heißt in einem Arbeitsgang hergestellt werden können.According to a further solution, it is possible to connect the rocker to the housing by means of a film hinge instead of an axis of rotation, the restoring force for the rocker also being adjustable via the thickness of the film hinge. Another advantage of this solution is that both the housing and the rocker can be made in one piece, that is, in one operation.

Diese und andere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind in den Unteransprüchen angegeben.These and other advantageous refinements and improvements of the invention are specified in the subclaims.

Anhand von in der Zeichnung dargestellten Ausführungsbeispielen sollen die Erfindung, vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung näher erläutert und beschrieben werden.The invention, advantageous refinements and improvements of the invention are to be explained and described in more detail with reference to exemplary embodiments illustrated in the drawing.

Es zeigen:

Fig. 1.1
das Oberteil eines erfindungsgemäßen Schalters mit einer Wippe mit Rastnase in Ausschaltstellung,
Fig. 1.2
den Schalter gemäß Fig. 1.1 in Einschaltstellung,
Fig. 2.1
einen erfindungsgemäßen Schalter mit einer Wippe mit Raststift in Ausschaltstellung,
Fig. 2.2
den Schalter gemäß 2.1 in Einschaltstellung,
Fig. 3.1
einen erfindungsgemäßen Schalter mit Wippe mit Schaltkulisse und darin geführten an einem Schwenkarm angeordneten Schaltzapfen in Ausschaltstellung,
Fig. 3.2
den Schalter gemäß 3.1 in Einschaltstellung,
Fig. 3.3
eine ausschnittweise Draufsicht auf die Schaltkulisse,
Fig. 4.1
einen erfindungsgemäßen Schalter mit Wippe mit einer Schaltkulisse und darin geführten an einer Scheibe befestigten Schaltzapfen in Ausschaltstellung,
Fig. 4.2
einen ausschnittweisen Längsschnitt gemäß Linie XX in Fig. 1 zur Darstellung der Schaltkulisse.
Show it:
Fig. 1.1
the upper part of a switch according to the invention with a rocker with latch in the off position,
Fig. 1.2
1.1 the switch in the on position,
Fig. 2.1
a switch according to the invention with a rocker with locking pin in the off position,
Fig. 2.2
the switch according to 2.1 in the on position,
Fig. 3.1
a switch according to the invention with rocker with switching gate and switching pins arranged therein on a swivel arm in the off position,
Fig. 3.2
the switch according to 3.1 in the on position,
Fig. 3.3
a partial plan view of the shift gate,
Fig. 4.1
a switch according to the invention with a rocker with a switching gate and switching pins guided therein and attached to a disc in the off position,
Fig. 4.2
a fragmentary longitudinal section along line XX in Fig. 1 to illustrate the shifting gate.

In Fig. 1.1 ist ausschnittweise ein elektrischer Schalter 10 dargestellt, der ein Gehäuse 12 besitzt, in welchem eine Kontaktanordnung 14, bestehend aus einem beweglichen Kontaktstück 16 und einem festen Kontaktstück 18 angeordnet ist. Das bewegliche Kontaktstück 16 befindet sich auf einem Kontaktträger 17, der in einer zur Kontaktanordnung 14 gehörigen vertikal angeordneten Kontaktbahen 15 verschieblich geführt ist. Nicht gezeigt sind weitere Einzelheiten, wie zum Beispiel die Stromzuleitungen, Kontaktfedern und dergleichen.1.1 shows a detail of an electrical switch 10 which has a housing 12 in which a contact arrangement 14, consisting of a movable contact piece 16 and a fixed contact piece 18, is arranged. The movable contact piece 16 is located on a contact carrier 17 which is displaceably guided in a vertically arranged contact path 15 belonging to the contact arrangement 14. Further details, such as the power supply lines, contact springs and the like, are not shown.

Das Gehäuse 12 des Schalters 10 ist nach obenhin abgeschlossen durch eine Wippe 20, die eine Schwenkachse 22 besitzt, welche auf der Seite des Gehäuses 12 angeordnet ist, auf welcher sich die Kontaktanordnung 14 befindet.The housing 12 of the switch 10 is closed at the top by a rocker 20 which has a pivot axis 22 which is arranged on the side of the housing 12 on which the contact arrangement 14 is located.

Bei dem in Fig. 1.1 gezeigten Schalter 10 ist die Schwenkachse als durchgehende Welle vorgesehen, welche die Wippe quer zur Bewegungsrichtung des verschieblichen Kontaktträgers 17 durchdringt und deren Enden im Gehäuse 12 gelagert sind.In the switch 10 shown in FIG. 1.1, the pivot axis is provided as a continuous shaft which penetrates the rocker transversely to the direction of movement of the displaceable contact carrier 17 and the ends of which are mounted in the housing 12.

An der Außenseite der Wippe 20 ist ein nasenartiger Vorsprung 24 angeformt, der als Handhebel zur Betätigung der Wippe 20 dient. Mit Hilfe dieses Vorsprungs 24 ist es möglich, die Wippe 20 aus der in Fig. 1.1 gezeigten Ruhelage, das heißt in Ausschaltstellung, um die Schwenkachse 22 in Einschaltstellung zu schwenken und zurück.A nose-like projection 24 is formed on the outside of the rocker 20 and serves as a hand lever for actuating the rocker 20. With the help of this projection 24, it is possible to pivot the rocker 20 from the rest position shown in FIG. 1.1, that is to say in the off position, about the pivot axis 22 in the on position and back.

Zur Beaufschlagung des verschieblichen Kontaktträgers 17 dient ein an der Innenseite der Wippe 20 angeordneter Schaltnocken 26, der im Hinblick auf die aus der Schwenkbewegung der Wippe 20 resultierende Änderung seines Auflagepunktes auf dem verschieblichen Kontaktträger 17 kuppenartig ausgebildet ist.A switching cam 26, which is arranged on the inside of the rocker 20 and serves to act upon the sliding contact carrier 17, is designed in a dome-like manner with regard to the change in its point of contact on the sliding contact carrier 17 resulting from the pivoting movement of the rocker 20.

An dem der Schwenkachse 22 entgegengesetzten Ende der Wippe 20 ist an ihrer Innenseite ein hakenförmiger Rastarm 28 angeordnet. Der Rastarm 28 kann einstückig mit der Wippe verbunden sein oder in ihr formschlüssig verankert.At the end of the rocker 20 opposite the pivot axis 22, a hook-shaped latch arm 28 is arranged on its inside. The locking arm 28 can be integrally connected to the rocker or anchored in it in a form-fitting manner.

Mit seinem hakenartigen Vorsprung 29 legt sich der Rastarm 28 an der Innenseite der Gehäusewand 13 an, wobei er sich in der in Fig. 1.1 gezeigten Ruhelage, das heißt der Ausschaltstellung des Schalters, oberhalb einer an die Gehäusewand 13 angeformten Rastnase 30 befindet.With its hook-like projection 29, the latching arm 28 bears against the inside of the housing wall 13, it being in the rest position shown in FIG. 1.1, that is to say the switch-off position, above a latching lug 30 molded onto the housing wall 13.

Bei Betätigung der Wippe 20 gleitet der hakenartige Vorsprung 29 am Rastarm 28 an der Innenseite der Gehäusewand 13 und hintergreift so im weiteren Verlauf die Rastnase 30, wie in Fig. 1.2 gezeigt. In dieser Lage der Wippe 20 befindet sich der Schalter in Einschaltstellung, da aufgrund der Neigung der Wippe 20 der daran angeordnete Schaltnocken 26 den verschieblichen Kontaktträger 17 nach unten drückt, so daß das daran befestigte bewegliche Kontaktstück 16 das feste Kontaktstück 18 kontaktiert.When the rocker 20 is actuated, the hook-like projection 29 slides on the locking arm 28 on the inside of the housing wall 13 and thus engages behind the locking lug 30 as shown in FIG. 1.2. In this position of the rocker 20, the switch is in the switched-on position, since, due to the inclination of the rocker 20, the switching cam 26 arranged thereon pushes the displaceable contact carrier 17 downward, so that the movable contact piece 16 attached to it contacts the fixed contact piece 18.

Zum Lösen der Verrastung zwischen der Rastnase 30 und dem Rastarm 28 wird die Wippe am Vorsprung 24 entweder nach oben gezogen oder gemäß der Fig. 1.2 nach rechts gedrückt, so daß die hieraus resultierende auf den hakenartigen Vorsprung 29 wirkende Kraft dazu führt, daß der in Bezug auf die Rastnase 30 angeschrägt Vorsprung 29 nach innen gedrückt wird, so daß der Rastarm 28 frei wird und an der Rastnase 30 vorbei nach oben gleiten kann.To release the locking between the locking lug 30 and the locking arm 28, the rocker on the projection 24 is either pulled upwards or pushed to the right according to FIG. 1.2, so that the resulting force acting on the hook-like projection 29 leads to the fact that in With respect to the detent 30 chamfered projection 29 is pressed inward so that the detent arm 28 is free and can slide past the detent 30 upwards.

In Fig. 2.1 ist ein ähnlicher Schalter 10 wie in den Figuren 1.1 und 1.2 dargestellt, dessen wesentlicher Unterschied gegenüber dem dort gezeigten Schalter 10 in der veränderten Ausführung der Verrastung besteht.FIG. 2.1 shows a switch 10 similar to that in FIGS. 1.1 and 1.2, the essential difference of which compared to the switch 10 shown there is the changed design of the latching.

Während die übrigen Ausgestaltungsmerkmale gleich sind und demgemäß die gleichen Bezugsziffern haben (bezüglich ihrer Funktion und Bedeutung wird auf die Beschreibung zu 1.1 und 1.2 verwiesen), wird die Verrastung bei dem in Fig. 2.1 und 2.2 gezeigten Schalter 10 mittels eines federnd angeordneten Raststiftes 27 bewirkt, der an der Innenseite der Wippe 20 angeordnet ist.While the other design features are the same and accordingly have the same reference numerals (with regard to their function and meaning, reference is made to the description for 1.1 and 1.2), the latching in the switch 10 shown in FIGS. 2.1 and 2.2 is effected by means of a resiliently arranged locking pin 27 , which is arranged on the inside of the rocker 20.

Zur Verrastung greift der Raststift 27 in muldenartige Ausnehmungen 32 in der Seitenwand 13 des Gehäuses 12, wobei seine Federwirkung entweder aufgrund der materialabhängigen Elastizität erfolgt oder dadurch, daß er längsverschieblich, wie im Beispiel gezeigt von einer Druckfeder 271 beaufschlagt ist.For latching, the locking pin 27 engages in trough-like recesses 32 in the side wall 13 of the housing 12, its spring action either being due to the material-dependent elasticity or by being axially displaceable, as shown in the example, by a compression spring 271.

Die Form der Rastmulden 32 sowie des in die Rastmulden 32 eingreifenden Endes des Raststiftes 27 sind so gewählt, daß einerseits eine stabile Endlage der Wippe 20 eingehalten wird, andererseits jedoch eine Lageveränderung ohne große Kraftaufbringung, insbesondere ohne Gefahr einer Beschädigung des Raststiftes 27 möglich ist.The shape of the locking troughs 32 and the end of the locking pin 27 engaging in the locking troughs 32 are selected such that on the one hand a stable end position of the rocker 20 is maintained, but on the other hand a change in position is possible without great application of force, in particular without risk of damage to the locking pin 27.

Während in Fig. 2.1 die Ausschaltstellung des Schalters 10 dargestellt ist, ist in Fig. 2.2 die Einschaltstellung des Schalters 10 gezeigt, in welcher die Wippe 20 links geneigt ist und der Raststift 27 in die untere der beiden Rastmulden 32 eingreift.While the switch-off position of the switch 10 is shown in FIG. 2.1, the switch-on position of the switch 10 is shown in FIG. 2.2, in which the rocker 20 is inclined to the left and the locking pin 27 engages in the lower of the two locking recesses 32.

In den Figuren 3.1 und 3.2 ist jeweils ein Schalter 11 dargestellt, der sich von den in den Figuren 1 und 2 dargestellten Schalter sowohl durch eine andere Gestaltung der Wippe 21 als auch durch die Art der Verrastung unterscheidet. Die weiteren Merkmale des Schalter 11 entsprechen denen des Schalters 10, so daß die entsprechenden Bezugszeichen auch hier verwendet wurden. Bezüglich ihrer Bedeutung und Wirkungsweise wird auf die entsprechende Beschreibung zu den Figuren 1 und 2 verwiesen.FIGS. 3.1 and 3.2 each show a switch 11, which differs from the switches shown in FIGS. 1 and 2 both in a different design of the rocker 21 and in the type of latching. The other features of the switch 11 correspond to those of the switch 10, so that the corresponding reference numerals have also been used here. With regard to their meaning and mode of action, reference is made to the corresponding description for FIGS. 1 and 2.

Die Wippe 21 des Schalters 11 besitzt auf ihrer der Schwenkachse 22 entgegengesetzten Außenseite eine Kuppe 23, welche als Betätigungsfeld dient.The rocker 21 of the switch 11 has a dome 23 on its outside opposite the pivot axis 22, which serves as an operating field.

Auch beim Schalter 11 ist an die Wippe 21 an dem der Schwenkachse 22 entgegengesetzten Ende auf ihrer Innenseite eine Rastvorrichtung 25 angeordnet, die mit einem Zapfen 38 zusammenarbeitet, welcher an einem am Gehäuse angelenkten, genauer gesagt an einem an der Innenseite der Seitenwand 13 angeformten Haltezapfen 33 schwenkbar gelagerten Schwenkarm 34 befestigt ist.Also in the case of the switch 11, a latching device 25 is arranged on the rocker 21 on the inside opposite the pivot axis 22, which engages with a pin 38 which is attached to a holding pin articulated to the housing, more precisely to a molded pin on the inside of the side wall 13 33 pivotally mounted pivot arm 34 is attached.

Die nähere Ausgestaltung sowie die Funktionsweise dieser Verrastungsvorrichtung 25 ist aus Fig. 3.3 ersichtlich.The more detailed design and the mode of operation of this latching device 25 can be seen from FIG. 3.3.

Während in Fig. 3.1 der Schalter 11 in seiner Ausschaltstellung gezeigt ist, ist in Fig. 3.2 die Einschaltstellung dargestellt.While switch 11 is shown in its switched-off position in FIG. 3.1, the switched-on position is shown in FIG. 3.2.

In Fig. 3.3 ist eine ausschnittweise Seitenansicht gemäß der Schnittlinie I-I in Fig. 3.1, aus welcher ersichtlich ist, daß der am Schwenkarm 34 befestigte Zapfen 38 in einer Kulisse 35 geführt ist. In der Darstellung gemäß Fig. 3.3 befindet sich der Zapfen in einer ersten Schaltposition. Bei Betätigung der Wippe 21 bewegt sich die daran befestigte Rastvorrichtung 25 nach unten, so daß der Zapfen 38 an die über ihm befindliche etwa V-förmig ausgebildete Rastkante 36 zur Anlage kommt und von dieser zur Seite gedrängt wird. Hierbei bewirkt die kulissenartige Ausgestaltung der Rastvorrichtung 25, daß bei der entgegengesetzten Bewegung der Wippe, zum Beispiel beim Loslassen, der Zapfen 38 in die Rastkante 36 greift, wo er eine zweite Schaltposition einnimmt. Beim erneuten Niederdrücken der Wippe 21 wird der Zapfen 38 aufgrund der Kulissenführung ebenfalls seitlich verschoben und einem Eingriff mit der Rastkante 36 entzogen, so daß er wieder in die erste Schaltposition gelangen kann.In Fig. 3.3 is a partial side view according to section line II in Fig. 3.1, from which it can be seen that the pin 38 attached to the pivot arm 34 is guided in a link 35. 3.3, the pin is in a first switching position. When the rocker 21 is actuated, the locking device 25 attached to it moves downward, so that the pin 38 comes to rest against the approximately V-shaped locking edge 36 located above it and is pushed to the side by it. Here, the backdrop-like configuration of the latching device 25 causes the pin 38 to engage in the latching edge 36 when the rocker is moving in the opposite direction, for example when it is released, where it assumes a second switching position. When the rocker 21 is depressed again, the pin 38 is also laterally displaced due to the link guide and withdrawn from engagement with the latching edge 36, so that it can return to the first switching position.

In Fig. 4.1 ist ebenfalls ein Schalter 11 mit einer Wippe 21 dargestellt, der sich gegenüber der in Fig. 3 dargestellten Ausführung des Schalters 11 durch eine Variante der Zapfenführung unterscheidet.4.1 also shows a switch 11 with a rocker 21, which differs from the embodiment of the switch 11 shown in FIG. 3 by a variant of the pin guide.

Während die elektrischen Funktionsmerkmale sowie die Ausgestaltung der Wippe 21 mit der in Fig. 3 identisch ist, ist hiervon abweichend der Zapfen 38 an einer Scheibe 35 befestigt, welche in einer an der Seitenwand 13 des Gehäuses 12 angeformten kastenartigen Führung 19 mit einem Langloch 39, durch welches der Zapfen 38 durchgesteckt ist und mit seinem freien Ende in die Rastvorrichtung 25 greift, während die mit ihm verbundene Scheibe 35 in der Kastennut 19 geführt ist.While the electrical functional features and the design of the rocker 21 are identical to those in FIG. 3, the pin 38 is attached to a disk 35 which, in a box-shaped guide 19 with an elongated hole 39, is formed on the side wall 13 of the housing 12. through which the pin 38 is inserted and engages with its free end in the locking device 25, while the disk 35 connected to it is guided in the box groove 19.

Die Funktionsweise und die übrigen Merkmale entsprechen denen in Fig. 3.The mode of operation and the other features correspond to those in FIG. 3.

In Fig. 4.2 ist eine ausschnittweise der Ausgestaltung der Verrastung gemäß der Schnittlinie x-x in Fig. 4.1 wiedergegeben, aus welcher die Zuordnung der einzelnen Teile ersichtlich ist.4.2 shows a section of the configuration of the latching along the section line x-x in FIG. 4.1, from which the assignment of the individual parts can be seen.

Claims (7)

  1. Electrical switch (10, 11) having a housing (12), having at least one contact point (14) and also having a resilient operating part (20, 21), which is articulated on one side of the housing (12) and the pivot spindle (22) of which is arranged close to the edge on one end of the operating part (20, 21), there being arranged in the region of the opposite end of the operating part (20, 21), on the inside thereof, a latching means (25, 27, 28), which cooperates with a latching apparatus (30, 32, 34, 38) arranged on the housing (12), which operating part (20, 21) can be moved from a first final position into a second final position, and vice versa, and which contact point (14) is arranged in the housing (12) in the region between the pivot spindle (22) and the opposite side, characterized in that the operating part (20, 21) is constructed as a flat rocker, the outside of which is provided with a projection (23, 24) serving the purpose of actuation, in that the contact point (14) is arranged on the side that the pivot spindle (22) is arranged, in order to achieve a small switching travel, and has a contact carrier (17) which is guided displaceably in vertically arranged contact tracks and for the actuation of which there is provided a switching cam (26) arranged on the inside of the rocker (20, 21).
  2. Electrical switch (10, 11) according to Claim 1, characterized in that the latching means is constructed as a latching arm (28) which cooperates with a latching lug (30), fixed to the housing, as the latching apparatus.
  3. Electrical switch (10, 11) according to Claim 1, characterized in that the latching means is constructed as a latching pin (27) which cooperates with a latching marker (32), fixed to the housing, as the latching apparatus.
  4. Electrical switch (10, 11) according to Claim 1, characterized in that the latching means (25) is constructed as a switching link (35) which cooperates with a switching journal (38), guided on the housing, as the latching apparatus.
  5. Electrical switch according to Claim 4, characterized in that the switching journal (38) is connected to a disc (35), guided in a housing recess (19), and is moved transversely with respect to the direction of movement of the corresponding rocker end when the rocker (21) is actuated.
  6. Electrical switch according to Claim 4, characterized in that the switching journal (38) is arranged on a pivot arm (34) articulated on the housing (12) and is moved transversely with respect to the direction of movement of the corresponding rocker end when the rocker (21) is actuated.
  7. Electrical switch according to Claim 5 or 6, characterized in that the switching journal (38) engages into the latching apparatus (25), arranged on the rocker end, and, during the acutation of said apparatus, slides in a loop from a first switch position into a second switch position and is supported on a latching edge (36).
EP92109261A 1991-06-08 1992-06-02 Electrical switch Expired - Lifetime EP0518179B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4118986 1991-06-08
DE4118986A DE4118986A1 (en) 1991-06-08 1991-06-08 ELECTRIC SWITCH

Publications (3)

Publication Number Publication Date
EP0518179A2 EP0518179A2 (en) 1992-12-16
EP0518179A3 EP0518179A3 (en) 1993-05-19
EP0518179B1 true EP0518179B1 (en) 1995-12-13

Family

ID=6433564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109261A Expired - Lifetime EP0518179B1 (en) 1991-06-08 1992-06-02 Electrical switch

Country Status (2)

Country Link
EP (1) EP0518179B1 (en)
DE (2) DE4118986A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1225262B (en) * 1960-11-07 1966-09-22 Berker Geb Electric push button with a pivoting actuation button
CH428896A (en) * 1965-01-04 1967-01-31 Hasler Ag Key switch with a slide-like swivel key button and at least one signal lamp
DE2219820C3 (en) * 1972-04-22 1975-03-13 Fa. Diehl, 8500 Nuernberg Electric switch
US3878344A (en) * 1973-06-29 1975-04-15 Amp Inc Cam operated switch assembly having split housing, double action wiping resilient contacts and detent structure
SU1334205A1 (en) * 1986-04-30 1987-08-30 Предприятие П/Я Р-6679 Selector switch
DE3623636A1 (en) * 1986-07-12 1988-01-14 Bosch Gmbh Robert Operating device for a tumbler switch
DE3638952A1 (en) * 1986-11-14 1988-05-26 Marquardt Gmbh Electrical switch
SU1422254A1 (en) * 1987-03-10 1988-09-07 Специальное Конструкторское Бюро Харьковского Электроаппаратного Завода Switch

Also Published As

Publication number Publication date
EP0518179A2 (en) 1992-12-16
DE4118986A1 (en) 1992-12-10
EP0518179A3 (en) 1993-05-19
DE59204645D1 (en) 1996-01-25

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