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EP0215304B2 - Luminous push button key - Google Patents

Luminous push button key Download PDF

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Publication number
EP0215304B2
EP0215304B2 EP86111332A EP86111332A EP0215304B2 EP 0215304 B2 EP0215304 B2 EP 0215304B2 EP 86111332 A EP86111332 A EP 86111332A EP 86111332 A EP86111332 A EP 86111332A EP 0215304 B2 EP0215304 B2 EP 0215304B2
Authority
EP
European Patent Office
Prior art keywords
housing
luminaire
unit
pushbutton
explosion
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
EP86111332A
Other languages
German (de)
French (fr)
Other versions
EP0215304B1 (en
EP0215304A1 (en
Inventor
Wilmut Görner
Albert Münch
Gerhard Dipl.-Ing. Schwarz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
Asea Brown Boveri AG Germany
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Asea Brown Boveri AG Germany filed Critical Asea Brown Boveri AG Germany
Priority to AT86111332T priority Critical patent/ATE41076T1/en
Publication of EP0215304A1 publication Critical patent/EP0215304A1/en
Application granted granted Critical
Publication of EP0215304B1 publication Critical patent/EP0215304B1/en
Publication of EP0215304B2 publication Critical patent/EP0215304B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042—Explosion-proof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators

Definitions

  • the invention relates to a illuminated pushbutton according to the preamble of claim 1.
  • An explosion-proof illuminated switch and illuminated pushbutton has become known from DE-A 34 06 295.
  • This illuminated pushbutton has a central guide part in which an actuating pin is guided while maintaining a gap that is resistant to ignition.
  • a switching element and light-emitting diodes together with a connecting line are cast into the housing which holds the light switch or light button.
  • An actuation button is placed on the actuation pin at the front.
  • This known illuminated pushbutton or illuminated switch is a device which can be manufactured by itself and which can be installed directly in a control panel housing and which, because of its size alone, is only designed for relatively low voltages.
  • the object of the invention is to provide a illuminated pushbutton with which the disadvantages of the known illuminated pushbuttons are avoided.
  • a illuminated pushbutton of the type mentioned is known from DE-A 33 33 135.
  • This illuminated pushbutton is composed essentially of two components that can be separated from one another, namely a housing head with a light unit and a pressure body and a surrounding housing, in which there is a mains supply device and a pressure-tightly encapsulated switching chamber space. It is essential for the known illuminated pushbutton that the so-called device head can be installed and removed or replaced at any time in a potentially explosive atmosphere without special tools. But this makes the design of the known illuminated pushbutton quite complicated.
  • the object of the invention is to provide a illuminated pushbutton of the type mentioned, which is easier to manufacture and easier to use.
  • the illuminated pushbutton can also be called a short illuminated pushbutton.
  • the illuminated pushbutton can have two pressure-tight switching chamber spaces according to claim 2.
  • the entire unit can be used in accordance with the characterizing part of claim 3 in an outer housing with increased security, wherein according to claim 4, the opening of the outer housing, from which the probe element protrudes, can be used to guide the probe element.
  • the illuminated pushbutton forms a unitary device in which special measures for connecting two components as in the device known from DE-A 33 33 135 are not possible.
  • an explosion-proof illuminated pushbutton 13 is used, which has a surrounding housing 14, which has three adjacent rooms 15, 16 and 17, which are separated by partitions 18 and 19 are separated from each other.
  • a transformer 20, which serves to supply power to a lamp unit 21, is accommodated in the middle space, which, as can be seen from FIG. 2, is approximately rectangular.
  • the two rooms 15 and 17, which are designed as pressure-resistant switching chamber rooms there is a fastening surface, on each of which there is a base 22 or 23, on which contact tabs 24 and 25 are attached, which carry fixed contact pieces 26 and 27, which with movable contact pieces 28 and 29 cooperate, which are attached to a contact bridge 30.
  • the contact bridge 30 is also connected to a switching plunger 31 or 32.
  • the contact lugs 24 and 25 are led out through the housing 14 and end in clamping lugs 33 and 34, to which connecting terminals 35 and 36 are attached.
  • niches 37 and 38 are formed in the region of the connecting terminals 35 and 36, which are delimited on both sides and inwards by walls 39, 40 and 41, as a result of which the air and creepage distances to neighboring ones Devices or to neighboring terminals 42 or 43 are enlarged.
  • the transformer 20 is connected (not shown here) to terminals 42 and 43, wherein these terminals 42 and 43 also sit in recesses 44 and 45 delimited by walls.
  • the walls for the niches 44 and 45 are on one side the partition 41; a wall 46 on the inside and a wall 47 running parallel to the wall 41 on the other side.
  • the terminals 48 and 49 belonging to the contact pieces of the switching chamber space 17 on the right are accommodated in the same way as the terminals 35 and 36 in niches 50 and 51, which correspond to the niches 37 and 38.
  • the walls in the area of the pressure-resistant rooms 15 and 17 and in the area of the middle room 16 have a circumferential recess 52, on which a cover 53 is placed, which is poured upwards by means of a casting resin compound 54.
  • a cover 53 In the cover 53 there are openings 55 and 56, respectively, through which switching plungers 31 and 32 are passed in a pressure-resistant manner; there is an air gap of a certain gap width and a certain gap length.
  • In the cover 52 there is a further opening 57 through which a lamp housing 59 extends, in which the lamps 21 are located.
  • the lamp housing 59 has a flange-like collar 58 which grips behind the cover 52 and thus secures the lamp housing 59.
  • the luminaire housing 59 is surrounded by a pushbutton element 60 which is covered at the top by a cover 61 which projects above the pushbutton element 60.
  • the sensing element 60 is adapted to the lamp housing 59 and engages around it.
  • the sensing element 60 has two projections 62 and 63 on both sides, which overlap the switching plunger 31 and 32, such that the switching plunger 31 and 32 can be actuated by means of the sensing element 60.
  • a passage 70 through which a sleeve 71 is inserted, which projects beyond the inside surface of the upper housing part and which is clamped or clamped to the housing by means of a nut 72 is screwed tight.
  • the sleeve 71 delimits a cylinder interior 73 and has at the inner end of the cylinder interior inwardly facing projections 74 and 75, which cover the outside diameter of the cover 61 inwards, so that a compression spring 76 and 77 is arranged between the cover 61 and the lugs 74 and 75 can be.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Switches With Compound Operations (AREA)

Abstract

1. Illuminated pushbutton having a luminaire unit (21) with a power supply unit (20), cast into a housing (14), for the luminaire unit (21) and a squareshaped or cylindrical, transparent luminaire housing (59) connected thereto for the luminaire unit (21), which in particular contains incandescent lamps, characterized in that, on at least one side laterally on the luminaire housing (59), an explosion-proof encapsulated interrupt chamber space (15, 17) with fixed and movable contact members (26, 27 ; 28, 29) is arranged, of which the switch tappet (31, 32) connected to the movable contact members (28, 29) projects out of a closing cover (52), surrounding the luminaire housing, for the explosion-proof space and, if appropriate, for the housing (14) parallel to the central axis of the luminaire housing (59) in that the luminaire housing is enclosed by a pot-shaped pushbutton element (60), which is guided so as to be displaceable relative to the luminaire housing, and in that, on at least one side of the pushbutton element (60), a projection (58, 62) is formed on which covers the switch tappet (31, 32) and interacts with the latter.

Description

LeuchtdrucktasterIlluminated pushbutton

Die Erfindung betrifft einen Leuchtdrucktaster nach dem Oberbegriff des Anspruches 1.The invention relates to a illuminated pushbutton according to the preamble of claim 1.

Ein explosionsgeschützter Leuchtschalter und Leuchtdrucktaster ist aus der DE-A 34 06 295 bekannt geworden. Dieser Leuchttaster besitzt ein zentrisches Führungsteil, in dem ein Betätigungsstift unter Einhalten eines zünddurchschlagsicheren Spaltes geführt ist. In das Gehäuse, das den Leuchtschalter bzw. Leuchttaster aufnimmt, sind ein Schaltelement und Leuchtdioden mitsamt einer Anschlußleitung eingegossen. Auf den Betätigungsstift ist vorne ein Betätigungsknopf aufgesetzt.An explosion-proof illuminated switch and illuminated pushbutton has become known from DE-A 34 06 295. This illuminated pushbutton has a central guide part in which an actuating pin is guided while maintaining a gap that is resistant to ignition. A switching element and light-emitting diodes together with a connecting line are cast into the housing which holds the light switch or light button. An actuation button is placed on the actuation pin at the front.

Dieser bekannte Leuchtdrucktaster bzw. Leuchtschalter ist ein für sich herzustellendes Gerät, das unmittelbar in ein Schalttafelgehäuse eingebaut werden kann und das allein aufgrund seiner Größe nur für relativ niedrige Spannungen ausgelegt ist.This known illuminated pushbutton or illuminated switch is a device which can be manufactured by itself and which can be installed directly in a control panel housing and which, because of its size alone, is only designed for relatively low voltages.

Aufgabe der Erfindung ist es, einen Leuchtdrucktaster zu schaffen, mit dem die Nachteile der bekannten Leuchtdrucktaster vermieden werden.The object of the invention is to provide a illuminated pushbutton with which the disadvantages of the known illuminated pushbuttons are avoided.

Ein Leuchtdrucktaster der eingangs genannten Art ist aus der DE-A 33 33 135 bekannt geworden. Dieser Leuchtdrucktaster setzt sich im wesentlichen aus zwei Komponenten zusammen, die voneinander getrennt werden können, und zwar einem Gehäusekopf mit einer Leuchteneinheit und einem Druckkörper und einem Umgehäuse, in dem sich eine Netzversorgungseinrichtung und ein druckfest gekapselter Schaltkammerraum befinden. Von wesentlicher Bedeutung für den bekannten Leuchtdrucktaster ist, daß der sog. Gerätekopf jederzeit im explosionsgefährdeten Raum ohne Spezialwerkzeug montiert und demontiert bzw. ausgetauscht werden kann. Damit aber ist die konstruktive Gestaltung des bekannten Leuchtdrucktasters recht kompliziert.A illuminated pushbutton of the type mentioned is known from DE-A 33 33 135. This illuminated pushbutton is composed essentially of two components that can be separated from one another, namely a housing head with a light unit and a pressure body and a surrounding housing, in which there is a mains supply device and a pressure-tightly encapsulated switching chamber space. It is essential for the known illuminated pushbutton that the so-called device head can be installed and removed or replaced at any time in a potentially explosive atmosphere without special tools. But this makes the design of the known illuminated pushbutton quite complicated.

Aufgabe der Erfindung ist, einen Leuchtdrucktaster der eingangs genannten Art zu schaffen, der einfacher in der Herstellung und einfacher in der Handhabung ist.The object of the invention is to provide a illuminated pushbutton of the type mentioned, which is easier to manufacture and easier to use.

Diese Aufgabe wird erfindungsgemäß gelöst durch die kennzeichnenden Merkmale des Anspruches 1.This object is achieved according to the invention by the characterizing features of claim 1.

Der Leuchtdrucktaster kann dabei auch kurz Leuchttaster genannt werden.The illuminated pushbutton can also be called a short illuminated pushbutton.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the invention can be found in the subclaims.

Insbesondere kann der Leuchtdrucktaster zwei druckfeste Schaltkammerräume gemäß Anspruch 2 aufweisen.In particular, the illuminated pushbutton can have two pressure-tight switching chamber spaces according to claim 2.

Die gesamte Einheit kann gemäß Kennzeichen des Anspruches 3 in ein Außengehäuse mit erhöhter Sicherheit eingesetzt werden, wobei gemäß Anspruch 4 die Öffnung des Außengehäuses, aus dem das Tastelement herausragt, zur Führung des Tastelementes benutzt werden.The entire unit can be used in accordance with the characterizing part of claim 3 in an outer housing with increased security, wherein according to claim 4, the opening of the outer housing, from which the probe element protrudes, can be used to guide the probe element.

Mit der Erfindung werden die Vorteile erreicht, daß der Leuchtdrucktaster ein einheitliches Gerät bildet, bei dem besondere Maßnahmen zur Verbindung zweier Komponenten wie bei dem aus der DE-A 33 33 135 bekannten Gerät nicht möglich sind.With the invention, the advantages are achieved that the illuminated pushbutton forms a unitary device in which special measures for connecting two components as in the device known from DE-A 33 33 135 are not possible.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung näher erläutert und beschrieben werden.Based on the drawing, in which an embodiment of the invention is shown, the invention and further advantageous refinements and improvements of the invention are to be explained and described in more detail.

Es zeigen:

  • Figur 1 eine Schnittansicht durch ein Schaltgerät, gemäß Linie I-I der Figur 2, in sehr schematischer Ausführung,
  • Figur 2 eine Einsicht in das Schaltgerät gemäß Figur 1,
  • Figur 3 eine Schnittansicht gemäß der Schnittlinie 111-111 der Figur 2.
Show it:
  • 1 shows a sectional view through a switching device, according to line II of FIG. 2, in a very schematic embodiment,
  • FIG. 2 shows an insight into the switching device according to FIG. 1,
  • 3 shows a sectional view along the section line 111-111 of FIG. 2.

Im Inneren eines aus zwei Gehäusehälften 11 und 12 bestehenden Gehäuses 10, das den Vorschriften für erhöhte Sicherheit genügt, ist ein explosionssicherer Leuchttaster 13 eingesetzt, der ein Umgehäuse 14 aufweist, das drei nebeneinanderliegende Räume 15, 16 und 17 aufweist, die durch Trennwände 18 und 19 voneinander getrennt sind. Im mittleren Raum, der wie aus der Figur 2 ersichtlich ist, angenähert rechteckförmig ausgebildet ist, ist ein Transformator 20 untergebracht, der zur Stromversorgung einer Leuchteneinheit 21 dient. In den beiden Räumen 15 und 17, die als druckfeste Schaltkammerräume ausgebildet sind, befindet sich eine Befestigungsfläche, hierauf je einem Sockel 22 bzw. 23, auf denen Kontaktfahnen 24 und 25 angebracht sind, die Festkontaktstücke 26 und 27 tragen, die mit bewegbaren Kontaktstücken 28 und 29 zusammenwirken, welche an einer Kontakt brücke 30 befestigt sind. Die Kontakt brücke 30 ist ferner mit einem Schaltstößel 31 bzw. 32 verbunden. Die Kontaktfahnen 24 und 25 sind durch das Gehäuse 14 herausgeführt und enden in Klemmfahnen 33 und 34, an denen Anschlußklemmen 35 und 36 angebracht sind. Man erkennt in der Figur 2 in Verbindung mit Figur 3, daß im Bereich der Anschlußklemmen 35 und 36 Nischen 37 und 38 gebildet sind, die beidseitig und nach innen durch Wände 39, 40 und 41 begrenzt sind, wodurch die Luft- und Kriechstrecken zu benachbarten Geräten bzw. zu benachbarten Klemmen 42 bzw. 43 vergrößert werden.In the interior of a housing 10 consisting of two housing halves 11 and 12, which meets the requirements for increased safety, an explosion-proof illuminated pushbutton 13 is used, which has a surrounding housing 14, which has three adjacent rooms 15, 16 and 17, which are separated by partitions 18 and 19 are separated from each other. A transformer 20, which serves to supply power to a lamp unit 21, is accommodated in the middle space, which, as can be seen from FIG. 2, is approximately rectangular. In the two rooms 15 and 17, which are designed as pressure-resistant switching chamber rooms, there is a fastening surface, on each of which there is a base 22 or 23, on which contact tabs 24 and 25 are attached, which carry fixed contact pieces 26 and 27, which with movable contact pieces 28 and 29 cooperate, which are attached to a contact bridge 30. The contact bridge 30 is also connected to a switching plunger 31 or 32. The contact lugs 24 and 25 are led out through the housing 14 and end in clamping lugs 33 and 34, to which connecting terminals 35 and 36 are attached. It can be seen in FIG. 2 in connection with FIG. 3 that niches 37 and 38 are formed in the region of the connecting terminals 35 and 36, which are delimited on both sides and inwards by walls 39, 40 and 41, as a result of which the air and creepage distances to neighboring ones Devices or to neighboring terminals 42 or 43 are enlarged.

Der Transformator 20 ist (hier nicht näher dargestellt) mit Anschlußklemmen 42 und 43 verbunden, wobei diese Anschlußklemmen 42 und 43 ebenfalls in durch Wände begrenzten Nischen 44 und 45 sitzen. Die Wände für die Nischen 44 und 45 sind auf der einen Seite die Trennwand 41; nach innen eine Wand 46 und zur anderen Seite hin eine parallel zur Wand 41 verlaufende Wand 47.The transformer 20 is connected (not shown here) to terminals 42 and 43, wherein these terminals 42 and 43 also sit in recesses 44 and 45 delimited by walls. The walls for the niches 44 and 45 are on one side the partition 41; a wall 46 on the inside and a wall 47 running parallel to the wall 41 on the other side.

Die zu den Kontaktstücken des rechts befindlichen Schaltkammerraumes 17 gehörenden Klemmen 48 und 49 sind in gleicher Weise wie die Klemmen 35 und 36 in Nischen 50 und 51 untergebracht, die den Nischen 37 und 38 entsprechen.The terminals 48 and 49 belonging to the contact pieces of the switching chamber space 17 on the right are accommodated in the same way as the terminals 35 and 36 in niches 50 and 51, which correspond to the niches 37 and 38.

Die Wände im Bereich der druckfesten Räume 15 und 17 sowie im Bereich des mittleren Raumes 16 besitzen einen umlaufenden Rücksprung 52, auf den ein Deckel 53 aufgelegt ist, der nach oben hin mittels einer Gießharzmasse 54 ausgegossen ist. In dem Deckel 53 befinden sich Öffnungen 55 bzw. 56, durch die Schaltstößel 31 und 32 druckfest hindurchgeführt sind; man hat dort einen Luftspalt von bestimmter Spaltweite und bestimmter Spaltlänge. In dem Deckel 52 befindet sich eine weitere Öffnung 57, durch die ein Leuchtengehäuse 59 hindurchgreift, in dem sich die Leuchten 21 befinden. Das Leuchtengehäuse 59 besitzt einen flanschartigen Kragen 58, der hinter den Deckel 52 faßt und so das Leuchtengehäuse 59 sichert.The walls in the area of the pressure-resistant rooms 15 and 17 and in the area of the middle room 16 have a circumferential recess 52, on which a cover 53 is placed, which is poured upwards by means of a casting resin compound 54. In the cover 53 there are openings 55 and 56, respectively, through which switching plungers 31 and 32 are passed in a pressure-resistant manner; there is an air gap of a certain gap width and a certain gap length. In the cover 52 there is a further opening 57 through which a lamp housing 59 extends, in which the lamps 21 are located. The lamp housing 59 has a flange-like collar 58 which grips behind the cover 52 and thus secures the lamp housing 59.

Das Leuchtengehäuse 59 ist umgeben von einem Tastelement 60, das nach oben hin von einem Deckel 61 abgedeckt ist, der das Tastelement 60 überragt. Das Tastelement 60 ist dem Leuchtengehäuse 59 angepaßt und umgreift es. Das Tastelement 60 besitzt beidseitig zwei Vorsprünge 62 und 63, die die Schaltstößel 31 und 32 übergreifen, dergestalt, daß mittels des Tastelementes 60 die Schaltstößel 31 und 32 betätigt werden können.The luminaire housing 59 is surrounded by a pushbutton element 60 which is covered at the top by a cover 61 which projects above the pushbutton element 60. The sensing element 60 is adapted to the lamp housing 59 and engages around it. The sensing element 60 has two projections 62 and 63 on both sides, which overlap the switching plunger 31 and 32, such that the switching plunger 31 and 32 can be actuated by means of the sensing element 60.

In dem Umgehäuse 10, das den Vorschriften für erhöhte Sicherheit genügt, und zwar in dem Gehäuseoberteil, befindet sich ein Durchgang 70, durch den eine Hülse 71 hindurchgesteckt ist, der die Innenfläche des Gehäuseoberteils innen überragt und die mittels einer Mutter 72 am Gehäuse festgeklemmt bzw. festgeschraubt wird. Die Hülse 71 begrenzt einen Zylinderinnenraum 73 und besitzt am inneren Ende des Zylinderinnerraumes nach innen aufeinanderzuweisende Vorsprünge 74 und 75, die den Außendurchmesser des Deckels 61 nach innen überdecken, so daß zwischen dem Deckel 61 und den Nasen 74 und 75 eine Druckfeder 76 und 77 angeordnet sein kann. In der Figur 1 sind zwei Druckfedern gezeichnet; es können natürlich auch mehr Druckfedern sein oder es besteht die Möglichkeit lediglich eine einzige, das Tastelement 60 umgebende Schraubenfeder vorzusehen. Damit der Raum innerhalb des Gehäuses 10 in diesem Bereich auch der erhöhten Sicherheit genügt, können spezielle Abdichtungselemente noch vorgesehen werden.In the outer casing 10, which meets the requirements for increased safety, namely in the upper housing part, there is a passage 70 through which a sleeve 71 is inserted, which projects beyond the inside surface of the upper housing part and which is clamped or clamped to the housing by means of a nut 72 is screwed tight. The sleeve 71 delimits a cylinder interior 73 and has at the inner end of the cylinder interior inwardly facing projections 74 and 75, which cover the outside diameter of the cover 61 inwards, so that a compression spring 76 and 77 is arranged between the cover 61 and the lugs 74 and 75 can be. In Figure 1, two compression springs are drawn; there may of course also be more compression springs or there is the possibility of providing only a single helical spring surrounding the sensing element 60. Special sealing elements can also be provided so that the space within the housing 10 in this area also meets the increased security.

Claims (4)

1. Illuminated pushbutton having a luminaire unit (21) with a power supply unit (20), cast into a space of a housing (14), for the luminaire unit (21) and with a square-shaped or cylindrical, transparent luminaire housing (59) connected thereto for the luminaire unit (21), which in particular contains incandescent lamps, having at least one explosion-proof encapsulated interrupt chamber space (15, 17) which is located in the housing (14), is separated from the space for the power supply unit (20) by one partition wall (18, 19) in each case and has fixed and movable contact members, the switch tappet (31, 32) of which, connected to the movable contact members, projects out of the explosion-proof interrupt chamber space in a flameproof manner parallel to the central axis of the luminaire housing, and having a pot-shaped pushbutton element (60) which encloses the luminaire housing and is displaceable relative thereto, by means of which pushbutton element the switch tappet of the movable contact member can be actuated, characterised in that the luminaire housing (59) is firmly connected to the housing (14), in that the at least one interrupt chamber space (15, 17) is arranged laterally on the luminaire housing (59), in that the housing (14) with the explosion-proof interrupt chamber space (15, 17) is closed off in an explosion-protected manner by a cover plate (53) which has openings (55, 57) out of which the luminaire housing and the switch tappet project, and in that in each case one projection (58, 62) which covers the respective switch tappet (31, 32) and interacts with the latter is formed on the pot-shaped pushbutton element (60).
2. Illuminated pushbutton according to Claim 1, characterised in that two explosion-proof encapsulated interrupt chamber spaces (15, 17) with contact members are arranged on two sides symmetrically to the luminaire housing (59).
3. Illuminated pushbutton according to one of the preceding claims, characterised in that the unit together with interrupt chamber spaces (15, 17), luminaire unit (21) and power supply unit (20) are placed in an external housing (10) with increased safety and the pot-shaped pushbutton element (60) projects out of the external housing (10).
4. Illuminated pushbutton according to Claim 3, characterised in that the opening of the external housing (10) with increased safety serves to guide the pot-shaped pushbutton element (60).
EP86111332A 1985-08-30 1986-08-16 Luminous push button key Expired - Lifetime EP0215304B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111332T ATE41076T1 (en) 1985-08-30 1986-08-16 ILLUMINATED PUSHBUTTON.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853531052 DE3531052A1 (en) 1985-08-30 1985-08-30 LIGHT PRESSURE SWITCH
DE3531052 1985-08-30

Publications (3)

Publication Number Publication Date
EP0215304A1 EP0215304A1 (en) 1987-03-25
EP0215304B1 EP0215304B1 (en) 1989-03-01
EP0215304B2 true EP0215304B2 (en) 1993-08-18

Family

ID=6279783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111332A Expired - Lifetime EP0215304B2 (en) 1985-08-30 1986-08-16 Luminous push button key

Country Status (3)

Country Link
EP (1) EP0215304B2 (en)
AT (1) ATE41076T1 (en)
DE (2) DE3531052A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29716198U1 (en) * 1997-09-09 1997-10-30 Gira Giersiepen Gmbh & Co Kg, 42477 Radevormwald Electrical installation device, in particular buttons, sellers or switches
AU2017221885B2 (en) * 2016-03-15 2022-03-10 Giuliano Res A flame proof optical push button assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406295A1 (en) † 1983-02-23 1984-08-30 Karl 7108 Möckmühl Kapfer Explosion-proof illuminated switch and illuminated push button
DE3333135A1 (en) † 1983-09-14 1985-03-28 Barlian, Reinhold, Dipl.-Ing.(FH), 6990 Bad Mergentheim REPORTING DEVICE

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* Cited by examiner, † Cited by third party
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DE3406295A1 (en) † 1983-02-23 1984-08-30 Karl 7108 Möckmühl Kapfer Explosion-proof illuminated switch and illuminated push button
DE3333135A1 (en) † 1983-09-14 1985-03-28 Barlian, Reinhold, Dipl.-Ing.(FH), 6990 Bad Mergentheim REPORTING DEVICE

Also Published As

Publication number Publication date
DE3531052A1 (en) 1987-03-12
ATE41076T1 (en) 1989-03-15
EP0215304B1 (en) 1989-03-01
DE3662223D1 (en) 1989-04-06
EP0215304A1 (en) 1987-03-25

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