EP0338521B1 - Electric switch - Google Patents

Electric switch Download PDF

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Publication number
EP0338521B1
EP0338521B1 EP89106954A EP89106954A EP0338521B1 EP 0338521 B1 EP0338521 B1 EP 0338521B1 EP 89106954 A EP89106954 A EP 89106954A EP 89106954 A EP89106954 A EP 89106954A EP 0338521 B1 EP0338521 B1 EP 0338521B1
Authority
EP
European Patent Office
Prior art keywords
housing
plug
switch
connection
switch according
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
EP89106954A
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German (de)
French (fr)
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EP0338521A3 (en
EP0338521A2 (en
Inventor
Fritz Dignal
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Marquardt GmbH
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Marquardt GmbH
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Publication date
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Publication of EP0338521A2 publication Critical patent/EP0338521A2/en
Publication of EP0338521A3 publication Critical patent/EP0338521A3/en
Application granted granted Critical
Publication of EP0338521B1 publication Critical patent/EP0338521B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/04—Cases; Covers
    • H01H23/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/025—Light-emitting indicators

Definitions

  • the invention relates to an electrical switch according to the preamble of claim 1.
  • Electrical switches for example for actuating coffee machines, should be liquid-tight or largely liquid-protected and illuminated. So that liquid cannot easily penetrate into the switch, known switches are possibly manufactured with a sealed housing or with an additional rubber seal on the actuator. However, such known switches are of complex construction and are particularly unsuitable for automatic assembly.
  • GB-A-1 094 822 discloses a switch according to the preamble of the claim.
  • a raised collar is provided on the upper part of the switch housing, which serves as a bearing for an actuator and at the same time as a fastening flange for fastening the switch to a front plate.
  • This structure is not suitable for use in connection with a rocker-shaped actuator. Furthermore, automatic assembly of such a switch is not readily possible due to a complicated structure.
  • the document DE-A-3 024 510 shows a switch with a rocker-shaped actuator.
  • the rectangular housing is provided with a gable-shaped upper housing end, which has a semi-cylindrical section in its upper region as a bearing and lead-through for a multi-part actuator.
  • This switch too, has a complicated structure and is not suitable for automatic assembly.
  • the invention has for its object to propose a liquid-protected switch, which is simple and which is suitable for automatic assembly.
  • the switch housing is designed to be completely open, with special measures being provided which allow the individual parts to be assembled automatically. If, due to careless handling of the user, liquid gets into the switch interior through the upper plunger opening, this liquid can quickly and easily get out of the switch through the large bottom opening.
  • a large bottom opening in the switch housing offers the possibility of inserting the individual parts to be arranged inside the switch by an automatic assembly process, since only straight-line loading is provided. Grooves, receiving slots or channels are provided for this purpose, which serve to receive the contact system or a possible lighting with connections.
  • the switch housing is rectangular or square, the actuator being designed as a rocker.
  • a rectangular housing shape enables the construction of a very space-saving switch.
  • two plug connections without lighting and three plug connections with lighting arranged side by side in the switch housing.
  • a raised collar is used on the upper part of the housing, which protrudes far into the rocker of the actuator and thus seals off the inside of the switch.
  • the raised collar can also have lateral trunnions for the rocker bearing.
  • the contact bridge is formed with legs arranged in a U-shape.
  • the lower longer leg is used to connect the middle connector to the connector located on the edge of the housing.
  • the upper leg serves as an actuating surface for the rocker pin.
  • the plug connections are designed as a contact system.
  • the middle plug connection has a cutting edge bearing for the contact bridge, which at the same time forms the electrical contact connection.
  • the connector located on the edge of the housing is bent at right angles to form the mating contact surface for the contact bridge.
  • the inner housing wall and / or the plug connections have projections or resilient tabs for mutual locking when inserting the plug connections into the interior of the housing.
  • the switch is provided with a lighting unit, this is embedded in a separate hole, with the series resistor - if a glow lamp is used is also arranged in a separate hole.
  • the switch housing is made very thin in the area of this lamp holder, so that the light shines through with almost no loss if the housing material is transparent. In this area, the rocker carries a window for light to pass through.
  • the cable connections of the lighting unit are made using notches on the plug connections, the notches being compressed after the connecting wires have been inserted.
  • the contact spring is cut out in a semicircle in its outer area facing the glow lamp, so that the components can move closer together in this area.
  • FIGS. 1 and 4 represent a side view in cut-away form
  • FIGS. 2 and 5 the respective end view of FIGS. 1 and 4 and FIGS. 3 and 6 a view from below through the bottom opening of the switch housing.
  • the electrical switch 1 shown in side view in FIGS. 1 and 4 is preferably designed as a rocker switch for a coffee machine.
  • the rocker switch has a housing 2 which is completely closed on the side, the housing wall of which continues upwards and forms an upper housing end 3. Only in the middle area of the rectangular housing 2 is a through opening 4 provided in the upper housing end 3, through which a switching pin 5 of the rocker-shaped actuating member 6 projects into the housing interior 7.
  • the upper housing end or upper housing part 3 is designed in the form of a raised collar 8, which protrudes as far as possible into the pot-shaped housing 9 of the actuating member 6 in order to achieve the most comprehensive possible sealing of the through opening 4 to the interior 7 of the housing.
  • the raised collar 8 has laterally protruding knobs 10, which serve as bearing pins for the actuator 6.
  • the housing 2 of the switch is completely open in its lower region through a bottom opening 11. 3 and 6 show an insight into this bottom opening from below.
  • a first, middle plug connection 12 is inserted into the housing 2.
  • the side housing wall 13 points from bottom to top, i. H. in the vertical direction grooves 14 or receiving slots or channels in which the flat plug connector 12 is inserted with its side edges.
  • the housing wall 13 laterally contains a bore 15, into which a lateral projection 16 of the plug connection engages, so that the plug connection and the wall lock each other.
  • the plug connection 12 is U-shaped, the lower horizontal crosspiece between the U-shaped legs being designed as a pointed or V-shaped cutting edge 17, which is used as a bearing for the spring-like contact bracket (contact rocker) 18 and at the same time serves as an electrical connection between the plug connection 12 and the contact bracket 18.
  • the contact bracket 18 has a lower longer leg 19, a V-shaped kink 20, a U-shaped arc 21 and an upper shorter leg 22.
  • the V-shaped kink 20 serves as a counter-bearing to the V-shaped cutting edge 17 of the plug connection 12.
  • an electrical contact 23 is provided which interacts with a contact 24 of a second plug connection 25 located on the end face of the housing.
  • This plug connection 25 also consists of a flat material, with a tongue 27 bent over between two U-shaped legs 26, which carries the electrical contact 24.
  • the side edges of the plug connection 25 in turn run in lateral grooves 28 in the housing wall 13.
  • a rear nose or a projection 29 on the plug connection 25 serves for the form-fitting securing of the plug connection 25 with respect to the housing 2 with a corresponding recess.
  • the switching pin 5 cooperates with its lower end with the upper, shorter leg 22 of the contact bracket 18 in the sense of a switch changeover.
  • the switch contact between the contacts 23, 24 is open, i. H. the lower leg 19 is raised from the contact 24 and is placed slightly obliquely upwards. If you press the actuator 6 in the other direction downwards, the contact bracket 18 snaps over, so that the contacts 23, 24 lie together and the lower arm 19 lies approximately in a horizontal position.
  • the electrical switch 1 additionally has an illumination device 30 in the form of a glow lamp.
  • the embodiment without lighting device, ie without glow lamp, is shown in Fig. 4 to 6, wherein the housing design is provided for receiving such a lighting device.
  • the housing design for receiving an illumination device 30 can therefore also be described with reference to FIGS. 4 to 6.
  • the interior of the housing 2 has an upwardly arcuate recess 32 which already has the shape of the glow lamp 30.
  • the housing material 33 is made transparent, so that the light from the glow lamp 30 can pass through it almost without loss.
  • the actuating member 6 carries a transparent window 34 (see FIG. 1), so that the light from the glow lamp 30 can also shine through upwards.
  • the window 34 as shown in FIG. 4, can be omitted.
  • the housing 2 has a further longitudinal recess 35, in which the series resistor 36 of the glow lamp 30 is introduced. Finally, a further, slot-shaped longitudinal recess 37 is provided, into which the third plug-in connection 38 is inserted in the case of an illumination unit 30. As with the plug connections 12, 25, projections or resilient tabs 29 also serve for the plug connection for mutual latching with the housing.
  • the first connecting wire 39 is connected to the middle plug connection 12 and the second connecting wire 40 is connected first to the series resistor 36 and from there (wire 40 ') attached to the third connector 38.
  • the middle connector 12 and the third connector 38 have notches 41, in which the connecting wires 39, 40 'of the glow lamp or the series resistor are inserted. By compressing these notches 41 in the region of arrows 42, the connecting wires 39, 40 'are clamped in a force-fitting and positive manner.
  • the relevant design of the plug connection 12 can also be seen in FIG. 5.
  • the contact bracket 18 has a semicircular opening 43 in the region of its U-shaped arc 21, which is to serve as a recess for the outer contour 44 of the glow lamp 30.
  • the glow lamp 30 can move very close to the contact bracket 18 without the freedom of movement of the contact bracket being impaired.
  • the lateral housing walls 13 of the housing 2 furthermore have grooves (receiving slots) 45 for the laterally protruding part 46 of the U-shaped arch 21 of the contact bracket 18. These grooves 45 also serve to guide the contact bracket 18 laterally.
  • the assembly of the individual parts of the switch 1 takes place except for the actuator 6 exclusively through the bottom opening 11.
  • the contact bracket 18 is first inserted and fixed by means of the central plug connection 12 in the region of the V-shaped cutting edge 17 with the counter bearing 20. Then the second connector 25 is inserted straight into the housing.
  • the one connecting wire 40 of the glow lamp 30 is already connected to the series resistor 36. After inserting these two parts into the recesses 32 and 35, the one Connecting wire 39 of the glow lamp inserted into the notch 41 of the middle plug connection 12 while the wire end 40 'of the series resistor 36 is inserted into the further notch 41 of the third plug connection 38. The two notches are then compressed with a certain clamping force and the wires are thus fixed (arrow 42).

Description

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

Elektrische Schalter, beispielsweise zur Betätigung von Kaffeemaschinen, sollen flüssigkeitsdicht oder weitgehend flüssigkeitsgeschützt und beleuchtbar sein. Damit Flüssigkeit nicht ohne weiteres in den Schalter eindringen kann, werden bekannte Schalter ggf. mit dichtem Gehäuse oder mit zusätzlicher Gummidichtung am Betätiger hergestellt. Derartige bekannte Schalter sind jedoch kompliziert aufgebaut und eignen sich insbesondere nicht für eine automatische Montage.Electrical switches, for example for actuating coffee machines, should be liquid-tight or largely liquid-protected and illuminated. So that liquid cannot easily penetrate into the switch, known switches are possibly manufactured with a sealed housing or with an additional rubber seal on the actuator. However, such known switches are of complex construction and are particularly unsuitable for automatic assembly.

Aus der Entgegenhaltung GB-A-1 094 822 ist ein Schalter nach der Gattung des Anspruchs bekannt geworden. Bei diesem Schalter ist am oberen Teil des Schaltergehäuses ein hochgezogener Kragen vorgesehen, der als Lagerung für ein Betätigungsglied und gleichzeitig als Befestigungsflansch für eine Befestigung des Schalters an eine Frontplatte dient.GB-A-1 094 822 discloses a switch according to the preamble of the claim. In this switch, a raised collar is provided on the upper part of the switch housing, which serves as a bearing for an actuator and at the same time as a fastening flange for fastening the switch to a front plate.

Dieser Aufbau eignet sich nicht zur Verwendung im Zusammenhang mit einem wippenförmigen Betätigungsglied. Weiterhin ist eine automatische Montage eines solchen Schalters aufgrund eines komplizierten Aufbaus nicht ohne weiteres möglich.This structure is not suitable for use in connection with a rocker-shaped actuator. Furthermore, automatic assembly of such a switch is not readily possible due to a complicated structure.

Die Druckschrift DE-A-3 024 510 zeigt einen Schalter mit einem wippenförmigen Betätigungsglied. Zur Herstellung eines flüssigkeitsdichten Schalters ist das rechteckförmige Gehäuse mit einem giebelförmigen oberen Gehäuseabschluß versehen, der in seinem oberen Bereich einen halbzylinderförmigen Abschnitt als Lagerung und Durchführung für ein mehrfach geteiltes Betätigungsglied aufweist. Auch dieser Schalter ist kompliziert aufgebaut und eignet sich nicht für eine automatische Montage.The document DE-A-3 024 510 shows a switch with a rocker-shaped actuator. To produce a liquid-tight switch, the rectangular housing is provided with a gable-shaped upper housing end, which has a semi-cylindrical section in its upper region as a bearing and lead-through for a multi-part actuator. This switch, too, has a complicated structure and is not suitable for automatic assembly.

Aus der EP-A-0 262 509 ist weiterhin ein elektrischer Schalter mit einem wippenförmigen Betätigungsglied bekannt geworden, welcher in herkömmlicher Bauweise ein nach oben hin offenes Gehäuse für den Einsatz einer Betätigungswippe aufweist. Ein solcher Schalter erfüllt nicht die Aufgabe, einen flüssigkeitsgeschützten Schalter vorzuschlagen.From EP-A-0 262 509 an electrical switch with a rocker-shaped actuator has also become known, which in a conventional design has an upwardly open housing for the use of an actuator rocker. Such a switch does not fulfill the task of proposing a liquid-protected switch.

Der Erfindung liegt die Aufgabe zugrunde, einen flüssigkeitsgeschützten Schalter vorzuschlagen, der einfach aufgebaut ist und der sich für eine automatische Montage eignet.The invention has for its object to propose a liquid-protected switch, which is simple and which is suitable for automatic assembly.

Diese Aufgabe wird ausgehend von einem elektrischen Schalter der einleitend bezeichneten Art durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved on the basis of an electrical switch of the type described in the introduction by the characterizing features of claim 1.

In den Unteransprüchen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Schalters angegeben.Advantageous further developments and improvements of the switch specified in the main claim are specified in the subclaims.

Bei dem erfindungsgemäßen Schalter ist es von Bedeutung, daß dieser zunächst nach oben hin, d. h. in Richtung des Betätigungsglieds flüssigkeitsgeschützt abgedeckt ist. Dies geschieht beim erfindungsgemäßen Schalter dadurch, daß das Schaltergehäuse nach oben hin nahezu geschlossen ausgeführt ist und nur eine kleine Öffnung zur Durchführung des Betätigungsstößels für die Kontaktbrücke frei läßt.In the switch according to the invention it is important that this switch first upwards, i. H. is covered liquid-protected in the direction of the actuator. This takes place in the switch according to the invention in that the switch housing is almost closed at the top and leaves only a small opening for carrying out the actuating plunger for the contact bridge.

Nach unten hin ist das Schaltergehäuse vollkommen offen ausgebildet, wobei spezielle Maßnahmen vorgesehen sind, die eine automatische Montierbarkeit der Einzelteile erlauben. Sollte durch eine unvorsichtige Handhabung des Benutzers dennoch durch die obere Stößelöffnung Flüssigkeit in das Schalterinnere gelangen, so kann diese Flüssigkeit durch die große Bodenöffnung schnell und einfach aus dem Schalter hinaus gelangen. Im übrigen bietet eine große Bodenöffnung im Schaltergehäuse die Möglichkeit, die im Schalterinneren anzuordnenden Einzelteile durch einen automatischen Montiervorgang einzubringen, da nur eine gradlinige Beschickung vorgesehen ist. Hierfür sind Nuten, Aufnahmeschlitze oder Rinnen vorgesehen, die zur Aufnahme des Kontaktsystems oder einer eventuellen Beleuchtung mit Anschlüssen dienen.At the bottom, the switch housing is designed to be completely open, with special measures being provided which allow the individual parts to be assembled automatically. If, due to careless handling of the user, liquid gets into the switch interior through the upper plunger opening, this liquid can quickly and easily get out of the switch through the large bottom opening. In addition, a large bottom opening in the switch housing offers the possibility of inserting the individual parts to be arranged inside the switch by an automatic assembly process, since only straight-line loading is provided. Grooves, receiving slots or channels are provided for this purpose, which serve to receive the contact system or a possible lighting with connections.

Das Schaltergehäuse wird rechteckförmig oder quadratisch ausgebildet, wobei das Betätigungsorgan als Wippe ausgeführt ist. Durch eine rechteckige Gehäuseform ist der Aufbau eines sehr platzsparenden Schalters möglich. Hierzu werden im einfachsten Fall ohne Beleuchtung zwei Steckanschlüsse und mit Beleuchtung drei Steckanschlüsse nebeneinander im Schaltergehäuse angeordnet. Um einen möglichst guten Schutz gegen Flüssigkeitseindringung im oberen Bereich des Schaltergehäuses zu erreichen, ohne daR das Schaltergehäuse oben vollkommen verschlossen ist, wird am Gehäuseoberteil ein hochgezogener Kragen verwendet, der weit in die Wippe des Betätigungsglieds hineinragt und somit das Schalterinnere nach außen hin abschottet. Der hochgezogene Kragen kann gleichzeitig seitliche Lagerzapfen für die Wippenlagerung aufweisen.The switch housing is rectangular or square, the actuator being designed as a rocker. A rectangular housing shape enables the construction of a very space-saving switch. For this purpose, in In the simplest case, two plug connections without lighting and three plug connections with lighting arranged side by side in the switch housing. In order to achieve the best possible protection against liquid penetration in the upper area of the switch housing without the switch housing being completely closed at the top, a raised collar is used on the upper part of the housing, which protrudes far into the rocker of the actuator and thus seals off the inside of the switch. The raised collar can also have lateral trunnions for the rocker bearing.

Erfindungsgemäß erfolgt die Ausbildung der Kontaktbrücke mit U-förmig angeordneten Schenkeln. Der untere längere Schenkel dient zur Verbindung des mittleren Steckanschlusses zum am Rande des Gehäuses liegenden Steckanschluß. Der obere Schenkel dient als Betätigungsfläche für den Schaltzapfen der Wippe. Durch diese Maßnahme kann ein wippenförmiges Betätigungsglied mit einstückig hiermit verbundenem, feststehendem Schaltzapfen verwendet werden, welcher durch den hochgezogenen Kragen des Gehäuseoberteils problemlos hindurchgeführt werden kann. Ein komplizierter Aufbau des Schaltzapfens wird hierdurch vermieden.According to the invention, the contact bridge is formed with legs arranged in a U-shape. The lower longer leg is used to connect the middle connector to the connector located on the edge of the housing. The upper leg serves as an actuating surface for the rocker pin. As a result of this measure, a rocker-shaped actuating element with a fixed switching pin connected in one piece to it can be used, which can be easily passed through the raised collar of the upper housing part. This avoids a complicated construction of the switching pin.

Vorteilhaft ist weiterhin, daß die Steckanschlüsse als Kontaktsystem ausgebildet sind. Hierzu weist der mittlere Steckanschluß ein Schneidenlager für die Kontaktbrücke auf, welches gleichzeitig die elektrische Kontaktverbindung bildet. Der am Rande des Gehäuses liegende Steckanschluß ist rechtwinklig abgebogen, um die Gegenkontaktfläche für die Kontaktbrücke zu bilden.It is also advantageous that the plug connections are designed as a contact system. For this purpose, the middle plug connection has a cutting edge bearing for the contact bridge, which at the same time forms the electrical contact connection. The connector located on the edge of the housing is bent at right angles to form the mating contact surface for the contact bridge.

Die innere Gehäusewandung und/oder die Steckanschlüsse weisen Vorsprünge oder federnde Laschen auf, zur gegenseitigen Verrastung bei der Einführung der Steckanschlüsse in das Gehäuseinnere.The inner housing wall and / or the plug connections have projections or resilient tabs for mutual locking when inserting the plug connections into the interior of the housing.

Sofern der Schalter mit einer Beleuchtungseinheit versehen ist, ist diese in einer separaten Bohrung eingebettet, wobei - bei Verwendung einer Glimmlampe - der Vorwiderstand ebenfalls in einer separaten Bohrung angeordnet ist. Nach oben hin ist das Schaltergehäuse im Bereich dieser Lampenfassung sehr dünn ausgeführt, so daß bei transparentem Gehäusewerkstoff das Licht nahezu verlustfrei durchscheint. Die Wippe trägt in diesem Bereich ein Fenster für den Lichtdurchtritt.If the switch is provided with a lighting unit, this is embedded in a separate hole, with the series resistor - if a glow lamp is used is also arranged in a separate hole. At the top, the switch housing is made very thin in the area of this lamp holder, so that the light shines through with almost no loss if the housing material is transparent. In this area, the rocker carries a window for light to pass through.

Die Kabelanschlüsse der Beleuchtungseinheit erfolgen mittels Einkerbungen an den Steckanschlüssen, wobei die Einkerbungen nach Einlegen der Anschlußdrähte gestaucht sind.The cable connections of the lighting unit are made using notches on the plug connections, the notches being compressed after the connecting wires have been inserted.

Um Platz zu sparen, ist die Kontaktfeder in ihrem äußeren, der Glimmlampe zugewandten Bereich halbkreisförmig ausgeschnitten, so daß die Bauelemente in diesem Bereich enger zusammenrücken können.To save space, the contact spring is cut out in a semicircle in its outer area facing the glow lamp, so that the components can move closer together in this area.

Weitere erfindungswesentliche Merkmale und Vorteile ergeben sich aus den nachfolgend anhand der Zeichnung näher erläuterten Ausführungsbeispielen. Es zeigen

Fig. 1 bis 3
ein erstes Ausführungsbeispiel mit eingebauter Beleuchtungseinheit und
Fig. 4 bis 6
das gleiche Schaltersystem ohne Beleuchtungseinheit.
Further features and advantages essential to the invention result from the exemplary embodiments explained in more detail below with reference to the drawing. Show it
1 to 3
a first embodiment with built-in lighting unit and
4 to 6
the same switch system without lighting unit.

Hierbei stellen Fig. 1 und 4 eine Seitenansicht in aufgeschnittener Form dar, Fig. 2 und 5 die jeweilige Stirnansicht von Fig. 1 und 4 und Fig. 3 und 6 eine Einsicht von unten durch die Bodenöffnung des Schaltergehäuses.1 and 4 represent a side view in cut-away form, FIGS. 2 and 5 the respective end view of FIGS. 1 and 4 and FIGS. 3 and 6 a view from below through the bottom opening of the switch housing.

Der in Fig. 1 und 4 in Seitenansicht dargestellte elektrische Schalter 1 ist als Wippschalter vorzugsweise für eine Kaffeemaschine ausgebildet. Der Wippschalter weist ein seitlich rundum geschlossenes Gehäuse 2 auf, dessen Gehäusewandung sich nach oben hin fortsetzt und einen oberen Gehäuseabschluß 3 bildet. Lediglich im mittleren Bereich des rechteckförmigen Gehäuses 2 ist im oberen Gehäuseabschluß 3 eine Durchgangsöffnung 4 vorgesehen, durch die ein Schaltzapfen 5 des wippenförmigen Betätigungsgliedes 6 in das Gehäuseinnere 7 hineinragt. Um diese Durchgangsöffnung 4 herum ist der obere Gehäuseabschluß bzw. das Gehäuseoberteil 3 in Form eines hochgezogenen Kragens 8 ausgebildet, der möglichst weit in das topfförmige Gehäuse 9 des Betätigungsgliedes 6 hineinragt, um so eine möglichst umfassende Abdichtung der Durchgangsöffnung 4 zum Gehäuseinneren 7 zu erzielen.The electrical switch 1 shown in side view in FIGS. 1 and 4 is preferably designed as a rocker switch for a coffee machine. The rocker switch has a housing 2 which is completely closed on the side, the housing wall of which continues upwards and forms an upper housing end 3. Only in the middle area of the rectangular housing 2 is a through opening 4 provided in the upper housing end 3, through which a switching pin 5 of the rocker-shaped actuating member 6 projects into the housing interior 7. Around this through opening 4, the upper housing end or upper housing part 3 is designed in the form of a raised collar 8, which protrudes as far as possible into the pot-shaped housing 9 of the actuating member 6 in order to achieve the most comprehensive possible sealing of the through opening 4 to the interior 7 of the housing.

Der hochgezogene Kragen 8 weist seitlich hervorstehende Noppen 10 auf, die als Lagerzapfen für das Betätigungsglied 6 dienen.The raised collar 8 has laterally protruding knobs 10, which serve as bearing pins for the actuator 6.

Das Gehäuse 2 des Schalters ist in seinem unteren Bereich durch eine Bodenöffnung 11 vollkommen geöffnet. Fig. 3 und 6 zeigen einen Einblick in diese Bodenöffnung von unten her.The housing 2 of the switch is completely open in its lower region through a bottom opening 11. 3 and 6 show an insight into this bottom opening from below.

Im mittleren Bereich des Schaltergehäuses 2 wird ein erster, mittlerer Steckanschluß 12 in das Gehäuse 2 eingesetzt. Hierfür weist die seitliche Gehäusewandung 13 von unten nach oben, d. h. in vertikaler Richtung gerichtete Nuten 14 oder Aufnahmeschlitze oder Rinnen auf, in die der flache Steckanschluß 12 mit seinen Seitenkanten eingeschoben wird. Die Gehäusewandung 13 enthält seitlich eine Bohrung 15, in die ein seitlicher Vorsprung 16 des Steckanschlusses einrastet, damit der Steckanschluß und die Wandung gegenseitig verrasten.In the middle area of the switch housing 2, a first, middle plug connection 12 is inserted into the housing 2. For this purpose, the side housing wall 13 points from bottom to top, i. H. in the vertical direction grooves 14 or receiving slots or channels in which the flat plug connector 12 is inserted with its side edges. The housing wall 13 laterally contains a bore 15, into which a lateral projection 16 of the plug connection engages, so that the plug connection and the wall lock each other.

Im oberen Bereich ist der Steckanschluß 12 U-förmig ausgebildet, wobei der untere horizontale Quersteg zwischen den U-förmigen Schenkeln als angespitzte bzw. V-förmige Schneide 17 ausgebildet ist, die als Lagerung des federartigen Kontaktbügels (Kontaktwippe) 18 und gleichzeitig als elektrische Verbindung zwischen dem Steckanschluß 12 und dem Kontaktbügel 18 dient. Der Kontaktbügel 18 weist einen unteren längeren Schenkel 19, eine V-förmige Knickstelle 20, eine U-förmigen Bogen 21 sowie einen oberen kürzeren Schenkel 22 auf. Die V-förmige Knickstelle 20 dient als Gegenlager zur V-förmigen Schneide 17 des Steckanschlusses 12. Am Ende des unteren Schenkels 19 ist ein elektrischer Kontakt 23 vorgesehen, der mit einem Kontakt 24 eines zweiten, an der Stirnseite des Gehäuses liegenden Steckanschlusses 25 zusammenwirkt. Dieser Steckanschluß 25 besteht ebenfalls aus einem Flachmaterial, mit einer zwischen zwei U-förmigen Schenkeln 26 umgebogenen Zunge 27, die den elektrischen Kontakt 24 trägt. Die Seitenkanten des Steckanschlusses 25 laufen wiederum in seitlichen Nuten 28 in der Gehäusewandung 13. Eine rückwärtige Nase bzw. ein Vorsprung 29 am Steckanschluß 25 dient zur formschlüssigen Sicherung des Steckanschlusses 25 gegenüber dem Gehäuse 2 mit einer entsprechenden Ausnehmung.In the upper region, the plug connection 12 is U-shaped, the lower horizontal crosspiece between the U-shaped legs being designed as a pointed or V-shaped cutting edge 17, which is used as a bearing for the spring-like contact bracket (contact rocker) 18 and at the same time serves as an electrical connection between the plug connection 12 and the contact bracket 18. The contact bracket 18 has a lower longer leg 19, a V-shaped kink 20, a U-shaped arc 21 and an upper shorter leg 22. The V-shaped kink 20 serves as a counter-bearing to the V-shaped cutting edge 17 of the plug connection 12. At the end of the lower leg 19, an electrical contact 23 is provided which interacts with a contact 24 of a second plug connection 25 located on the end face of the housing. This plug connection 25 also consists of a flat material, with a tongue 27 bent over between two U-shaped legs 26, which carries the electrical contact 24. The side edges of the plug connection 25 in turn run in lateral grooves 28 in the housing wall 13. A rear nose or a projection 29 on the plug connection 25 serves for the form-fitting securing of the plug connection 25 with respect to the housing 2 with a corresponding recess.

Der Schaltzapfen 5 wirkt mit seinem unteren Ende mit dem oberen, kürzeren Schenkel 22 des Kontaktbügels 18 im Sinne einer Schalterumstellung zusammen. In Fig. 1 ist der Schaltkontakt zwischen den Kontakten 23, 24 geöffnet, d. h. der untere Schenkel 19 ist vom Kontakt 24 abgehoben und leicht schräg nach oben gestellt. Drückt man das Betätigungsglied 6 in die andere Richtung nach unten, so schnappt der Kontaktbügel 18 um, so daß die Kontakte 23, 24 zusammenliegen und der untere Arm 19 etwa in einer horizontalen Lage liegt.The switching pin 5 cooperates with its lower end with the upper, shorter leg 22 of the contact bracket 18 in the sense of a switch changeover. In Fig. 1, the switch contact between the contacts 23, 24 is open, i. H. the lower leg 19 is raised from the contact 24 and is placed slightly obliquely upwards. If you press the actuator 6 in the other direction downwards, the contact bracket 18 snaps over, so that the contacts 23, 24 lie together and the lower arm 19 lies approximately in a horizontal position.

In Figur 1 bis 3 weist der elektrische Schalter 1 zusätzlich eine Beleuchtungseinrichtung 30 in Form einer Glimmlampe auf. Die Ausführungsform ohne Beleuchtungseinrichtung, d. h. ohne Glimmlampe ist in Fig. 4 bis 6 dargestellt, wobei die Gehäuseausbildung zur Aufnahme einer solchen Beleuchtungseinrichtung vorgesehen ist. Die Gehäuseausbildung zur Aufnahme einer Beleuchtungseinrichtung 30 kann deshalb auch anhand der Figuren 4 bis 6 beschrieben werden. Wie aus der Fig. 4 in Seitenansicht sowie Fig. 6 in Unteransicht (Betrachtungspfeil 31) dargestellt, weist das Innere des Gehäuses 2 eine nach oben hin bogenförmige Ausnehmung 32 auf, die bereits die Form der Glimmlampe 30 aufweist.In FIGS. 1 to 3, the electrical switch 1 additionally has an illumination device 30 in the form of a glow lamp. The embodiment without lighting device, ie without glow lamp, is shown in Fig. 4 to 6, wherein the housing design is provided for receiving such a lighting device. The housing design for receiving an illumination device 30 can therefore also be described with reference to FIGS. 4 to 6. As shown in FIG. 4 in a side view and in FIG. 6 in a bottom view (arrow 31), the interior of the housing 2 has an upwardly arcuate recess 32 which already has the shape of the glow lamp 30.

Im oberen Bereich des Gehäuseabschlusses 3 ist der Gehäusewerkstoff 33 transparent ausgeführt, so daß das Licht der Glimmlampe 30 nahezu verlustfrei hindurchtreten kann. Das Betätigungsglied 6 trägt im Fall der Ausführungsform mit einer Beleuchtungseinheit ein durchsichtiges Fenster 34 (s. Fig. 1), so daß das Licht der Glimmlampe 30 nach oben ebenfalls hindurchscheinen kann. Bei einer Ausführungsform ohne Glimmlampe kann das Fenster 34, wie in Fig. 4 dargestellt, entfallen.In the upper area of the housing closure 3, the housing material 33 is made transparent, so that the light from the glow lamp 30 can pass through it almost without loss. In the case of the embodiment with a lighting unit, the actuating member 6 carries a transparent window 34 (see FIG. 1), so that the light from the glow lamp 30 can also shine through upwards. In an embodiment without a glow lamp, the window 34, as shown in FIG. 4, can be omitted.

Neben der an die Form der Glimmlampe 30 angepaßten Ausnehmung 32 weist das Gehäuse 2 eine weitere Längsausnehmung 35 auf, in welcher der Vorwiderstand 36 der Glimmlampe 30 eingebracht wird. Schließlich ist eine weitere, schlitzförmige Längsausnehmung 37 vorgesehen, in welche der dritte Steckanschluß 38 im Falle der Bestückung mit einer Beleuchtungseinheit 30 eingesetzt wird. Wie schon bei den Steckanschlüssen 12, 25 dienen auch beim Steckanschluß 38 Vorsprünge bzw. federnde Laschen 29 zur gegenseitigen Verrastung mit dem Gehäuse.In addition to the recess 32 adapted to the shape of the glow lamp 30, the housing 2 has a further longitudinal recess 35, in which the series resistor 36 of the glow lamp 30 is introduced. Finally, a further, slot-shaped longitudinal recess 37 is provided, into which the third plug-in connection 38 is inserted in the case of an illumination unit 30. As with the plug connections 12, 25, projections or resilient tabs 29 also serve for the plug connection for mutual latching with the housing.

Bei Bestückung des elektrischen Schalters mit einer Beleuchtungseinrichtung, insbesondere einer Glimmlampe 30 (Figur 1 bis 3) wird der erste Anschlußdraht 39 am mittleren Steckanschluß 12 und der zweite Anschlußdraht 40 zunächst am Vorwiderstand 36 und von dort aus (Draht 40′) am dritten Steckanschluß 38 befestigt. Wie in Fig. 2 dargestellt, weisen der mittlere Steckanschluß 12 und der dritte Steckanschluß 38 Einkerbungen 41 auf, in die die Anschlußdrähte 39, 40′ der Glimmlampe bzw. des Vorwiderstands eingelegt werden. Durch ein Zusammenstauchen dieser Einkerbungen 41 im Bereich der Pfeile 42 werden die Anschlußdrähte 39, 40′ kraft- und formschlüssig eingeklemmt. Die diesbezügliche Ausbildung des Steckanschlusses 12 ist aus Fig. 5 ebenfalls ersichtlich.When the electrical switch is equipped with a lighting device, in particular a glow lamp 30 (FIGS. 1 to 3), the first connecting wire 39 is connected to the middle plug connection 12 and the second connecting wire 40 is connected first to the series resistor 36 and from there (wire 40 ') attached to the third connector 38. As shown in Fig. 2, the middle connector 12 and the third connector 38 have notches 41, in which the connecting wires 39, 40 'of the glow lamp or the series resistor are inserted. By compressing these notches 41 in the region of arrows 42, the connecting wires 39, 40 'are clamped in a force-fitting and positive manner. The relevant design of the plug connection 12 can also be seen in FIG. 5.

Wie aus der Bodenansicht in Fig. 3 und 6 ersichtlich, weist der Kontaktbügel 18 im Bereich seines U-förmigen Bogens 21 ein halbkreisförmiger Durchbruch 43 auf, der als Aussparung für die Außenkontur 44 der Glimmlampe 30 dienen soll. Hierdurch kann die Glimmlampe 30 sehr nahe an den Kontaktbügel 18 heranrücken, ohne daß die Bewegungsfreiheit des Kontaktbügels beeinträchtigt ist.As can be seen from the bottom view in FIGS. 3 and 6, the contact bracket 18 has a semicircular opening 43 in the region of its U-shaped arc 21, which is to serve as a recess for the outer contour 44 of the glow lamp 30. As a result, the glow lamp 30 can move very close to the contact bracket 18 without the freedom of movement of the contact bracket being impaired.

Die seitlichen Gehäusewandungen 13 des Gehäuses 2 weisen weiterhin Nuten (Aufnahmeschlitze) 45 für den seitlich ausladenden Teil 46 des U-förmigen Bogens 21 des Kontaktbügels 18 auf. Diese Nuten 45 dienen ebenfalls zur seitlichen Führung des Kontaktbügels 18.The lateral housing walls 13 of the housing 2 furthermore have grooves (receiving slots) 45 for the laterally protruding part 46 of the U-shaped arch 21 of the contact bracket 18. These grooves 45 also serve to guide the contact bracket 18 laterally.

Die Montage der Einzelteile des Schalters 1 erfolgt außer dem Betätigungsglied 6 ausschließlich durch die Bodenöffnung 11. Dabei wird zunächst der Kontaktbügel 18 eingelegt und mittels dem mittleren Steckanschluß 12 im Bereich der V-förmigen Schneide 17 mit Gegenlager 20 fixiert. Danach wird der zweite Steckanschluß 25 geradlinig in das Gehäuse eingeschoben.The assembly of the individual parts of the switch 1 takes place except for the actuator 6 exclusively through the bottom opening 11. The contact bracket 18 is first inserted and fixed by means of the central plug connection 12 in the region of the V-shaped cutting edge 17 with the counter bearing 20. Then the second connector 25 is inserted straight into the housing.

Der eine Anschlußdraht 40 der Glimmlampe 30 ist bereits mit dem Vorwiderstand 36 verbunden. Nach Einsetzen dieser beiden Teile in die Ausnehmungen 32 bzw. 35 wird der eine Anschlußdraht 39 der Glimmlampe in die Einkerbung 41 des mittleren Steckanschlusses 12 eingelegt währed das Drahtende 40′ des Vorwiderstands 36 in die weitere Einkerbung 41 des dritten Steckanschlusses 38 eingelegt wird. Die beiden Einkerbungen werden dann mit einer bestimmten Klemmkraft zusammengestaucht und damit die Drähte fixiert (Pfeil 42).The one connecting wire 40 of the glow lamp 30 is already connected to the series resistor 36. After inserting these two parts into the recesses 32 and 35, the one Connecting wire 39 of the glow lamp inserted into the notch 41 of the middle plug connection 12 while the wire end 40 'of the series resistor 36 is inserted into the further notch 41 of the third plug connection 38. The two notches are then compressed with a certain clamping force and the wires are thus fixed (arrow 42).

Schließlich wird das Betätigungsglied 6 von oben her aufgesetzt, wobei der Schaltzapfen 5 durch die Durchgangsöffnung 4 hindurchgreift und den oberen Schenkel 22 des Kontaktbügels 18 betätigt.Finally, the actuator 6 is placed from above, the switching pin 5 reaching through the through opening 4 and actuating the upper leg 22 of the contact bracket 18.

Sämtliche Montagevorgänge können dabei vollautomatisch durchgeführt werden, da es sich weitgehend um eine lineare Bestückung der Teile in die entsprechenden Gehäuseausnehmungen handelt.All assembly processes can be carried out fully automatically, since it is largely a linear assembly of the parts in the corresponding housing recesses.

Die Erfindung ist nicht auf das dargestellte und beschriebene Ausführungsbeispiel beschränkt. Sie umfaßt auch vielmehr alle fachmännischen Ausgestaltungen ohne eigenen erfinderischen Gehalt welche sich im Rahmen der Schutzansprüche befinden.The invention is not restricted to the exemplary embodiment shown and described. Rather, it also encompasses all professional designs without their own inventive content which are within the scope of the protection claims.

Claims (10)

  1. Electric switch (30), with a switch housing (2) having a rectangular or square construction and which is open on the under side, in which case, for a liquid-tight construction, the switch housing (2) is sealed by means of a raised collar (8) in its upper region apart from a narrow through hole (4), with grooves (14, 28) directed upwards on the inside of the switch housing wall (13) and respectively arranged in pairs, which serve to receive a first (12) and a second (25) plug-in connection, the plug-in connections (12, 25) being guided outwards from the inside of the housing, and with a contact bridge (18) located in the inside of the housing and resting on the first plug-in connection (12), which contact bridge (18) can be switched by means of a switching pin (5) projecting through the opening of the collar (8), characterised in that a rocker-type actuating member (6) with a cup-shaped housing (9) is provided, on which the switching pin (5) is formed in one piece, with an invariable length, that the switching pin (5) projects into the raised collar (8) of the upper housing part (3), in which case the through hole (4) surrounded by the collar (8), with penetrating guidance of the switching pin (5), is constructed without complete closure in the upwards direction and that the contact bridge (18) has a U-shaped construction and comprises a longer lower side (19) in the switched state of the switch for the connection of the first plug-in connection (12) and of the second plug-in connection (25) and an upper, shorter side (22), which is biased by the switching pin (5) of the actuating member (6) for the purpose of a reversal.
  2. Switch according to Claim 1, characterised in that the inner side of the housing wall (13) comprises an upwardly directed pair of receiving slots (45) for receiving and/or for guiding the contact bridge (18).
  3. Switch according to Claim 1, characterized in that the collar (8) or the lateral housing wall (13) comprises bearing pins (10) or bearing grooves for the rocker mounting.
  4. Switch according to Claim 1, characterized in that the upper part of the first plug-in connection (12) comprises a V-shaped knife edge (17) for forming a rotary bearing (17, 20) for the contact bridge (18), the rotary bearing simultaneously serving as an electrical contact connection between this plug-in connection (12) and the contact bridge (18).
  5. Switch according to Claim 1 or 4, characterized in that the second plug-in connection (25) is arranged to lie within the switch housing (2) on an end wall and in its upper region (27) is bent at right angles in order to form a switching contact with a switching contact (23) of the contact bridge (18).
  6. Switch according to Claim 1, characterized in that provided in the switch housing (2) is at least one recess (32) for receiving an illuminating unit (30), that the upper, closed part (3) of the switch housing (2) and the rocker-like and cap-like actuating member (6) located thereabove are constructed to be permeable to light as windows (33, 34) in the region of the illuminating unit (30).
  7. Switch according to Claim 6, characterised in that the illuminating unit is constructed as a glow lamp (30) with a series resistance (36), that the glow lamp (30) and the series resistance (36) are arranged in a respectively separate recess (32, 35) in the switch housing (2) and that provided in a further groove (37) is a third plug-in connection (38), this plug-in connection (38) being connected to the series resistance (36) and the central, first plug-in connection (12) being connected to a cable connection (39) of the glow lamp (30).
  8. Switch according to Claim 7, characterized in that the first and third plug-in connections (12, 38) to be connected to the glow lamp (30) or the series resistance (36) comprise indentations (41), which are compressed after the insertion of the connecting wires (39, 40).
  9. Switch according to Claim 7, characterized in that the grooves (14, 28, 37) for the plug-in connections (12, 25, 38) on the inner housing wall (13) and/or the plug-in connections (12, 25, 38) comprise resilient projections (16) or lugs (29) and adapted recesses (15) for mutual locking.
  10. Switch according to one of Claims 6 to 9, characterized in that in its bent, U-shaped region (21), the contact bridge (18) comprises an opening (43) which is semi-circular in plan view, in which the outer contour (44) of the illuminating unit (30) engages.
EP89106954A 1988-04-21 1989-04-19 Electric switch Expired - Lifetime EP0338521B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3813350A DE3813350A1 (en) 1988-04-21 1988-04-21 ELECTRIC SWITCH
DE3813350 1988-04-21

Publications (3)

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EP0338521A2 EP0338521A2 (en) 1989-10-25
EP0338521A3 EP0338521A3 (en) 1990-10-17
EP0338521B1 true EP0338521B1 (en) 1993-09-29

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EP89106954A Expired - Lifetime EP0338521B1 (en) 1988-04-21 1989-04-19 Electric switch

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US (1) US4982061A (en)
EP (1) EP0338521B1 (en)
DE (2) DE3813350A1 (en)

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Also Published As

Publication number Publication date
DE3813350A1 (en) 1989-11-02
US4982061A (en) 1991-01-01
EP0338521A3 (en) 1990-10-17
DE58905728D1 (en) 1993-11-04
EP0338521A2 (en) 1989-10-25

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