EP0144916A2 - Push button - Google Patents

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Publication number
EP0144916A2
EP0144916A2 EP84114473A EP84114473A EP0144916A2 EP 0144916 A2 EP0144916 A2 EP 0144916A2 EP 84114473 A EP84114473 A EP 84114473A EP 84114473 A EP84114473 A EP 84114473A EP 0144916 A2 EP0144916 A2 EP 0144916A2
Authority
EP
European Patent Office
Prior art keywords
key
housing part
edge
key body
shaped
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.)
Granted
Application number
EP84114473A
Other languages
German (de)
French (fr)
Other versions
EP0144916A3 (en
EP0144916B1 (en
Inventor
Jaroslav Keprda
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.)
Siemens AG
Original Assignee
Siemens AG
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
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT84114473T priority Critical patent/ATE29335T1/en
Publication of EP0144916A2 publication Critical patent/EP0144916A2/en
Publication of EP0144916A3 publication Critical patent/EP0144916A3/en
Application granted granted Critical
Publication of EP0144916B1 publication Critical patent/EP0144916B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/012—Positioning of individual dome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/066—Actuators replaceable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/054—Mounting of key housings on same printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/03—Key modules mounted on support plate or frame
    • H01H2233/034—Snap coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/05—Actuator part on body
    • H01H2233/054—Snap coupling
    • H01H2233/056—Snap coupling with limited freedom
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/008—Static electricity considerations

Definitions

  • the invention relates to a key with a bell-shaped or dome-shaped, made of elastic material key body, which can be clamped with an edge delimiting its open side between a base plate and a key housing part.
  • Such a key is known from DE-OS 30 41 470.
  • the key body referred to there as the sealing membrane sits with its flat outer edge on the surface of a base plate referred to there as a support part and is pressed against the base plate by a housing part called a cap there.
  • a housing part called a cap there As a result, the space enclosed by the key body and the base plate, in which the contacts of the key are located, is sealed off from the outside world, in particular from the operating side of the key, so that, at least from this side, no foreign bodies in the contact space formed by the key body and base plate can reach.
  • the key known from .DE-OS 30 41 470 can also be used as a key module, that a keyboard can be formed from several such keys that are attached to a plate.
  • buttons efforts are made to arrange the fixed contacts directly on a plate; at the button is attached. In such a case, the number of parts that make up the key can be further reduced. The outer edge of the key body can then be clamped between a housing part of the key and this plate.
  • the object of the present invention is therefore to design a key of the type mentioned in the introduction in such a way that only a single key part has to be handled when such keys are attached to a plate carrying the fixed contacts of the keys.
  • the key body and the key housing part can be connected to one another even before these parts are fixed to a plate carrying the fixed contacts of the key, without the need for special connecting means such as adhesive.
  • the niche-like recesses consist of a continuous circumferential groove of the key housing part and that the key body has a web-like approach corresponding to the groove on its edge.
  • the key housing part is provided with snap pins on its side parallel to the open side of the key body.
  • the composite body consisting of the key housing part and the key body can be particularly easily attached to the plate carrying the fixed contacts of the key.
  • the key body has on its edge a wedge-shaped circumferential web projecting from this edge parallel to the direction of the axis of the key, that the key housing part is provided on the outside in the region of the edge with a circumferential edge attachment, which has a wedge-shaped, circumferential web projecting parallel to the direction of the axis, and that the key housing part has a hollow cylindrical projection on its side facing away from the open side of the key body, that the projection is provided on its inside with grooves directed parallel to the axis, and that ramp bodies are arranged in the grooves, each of which has a steeper sliding surface on its side facing the key body than on the side facing away from the key body.
  • the figure shows, enlarged and in section, a side view of the composite body consisting of the key housing part and the key body, which is locked on a plate carrying the fixed contacts of the key.
  • the key housing part 1 which is made of a dimensionally stable plastic and with side walls 3 extending at right angles to a base plate 2, encloses a space 4 in which the key body 5, which is made of an elastic plastic material or rubber, is arranged.
  • The. approximately dome-shaped or bell-shaped key body 5 has a thickened edge 6 facing the plate 2, which is provided with a web-like extension 7 directed parallel to the plate 2 and to the key housing part 1.
  • This approach 7 is fitted into a circumferential groove 8 of the key housing part 1, which is delimited by two webs 9, 10.
  • the webs 9, 10 are directed towards the center of the key body 5 and thereby include the shoulder 7 together with the side walls 3 of the key housing part 1 such that the key body 5 fitted with the web-like extension 7 into the groove 8 in this way with the key housing part 1 is connected.
  • the web 10 of the key housing part 1, which is more distant from the base plate 2, also serves as an abutment, so that when the composite body 11 consisting of the key housing part 1 and the key body 5 is placed on the base plate 2, the edge 6 of the key body protruding toward the base plate 2 via the key housing part 1 to press against the base plate 2.
  • radially resilient dowel pins 12 penetrate holes 13 provided in the base plate 2 and adapted to the dowel pins 12.
  • these are provided with a collar 14 which increases their diameter.
  • This collar 14 can pass through the bore 13 in the base plate 2 through the radial compression of the dowel pins 12 and then, by returning to its original circumference, locks the composite body 11 on the base plate 2.
  • the radial compressibility of the dowel pins 12 can e.g. caused by a slit 15 of these pins.
  • a contact space 16 is sealed off from the outside world, in particular from the operating side of the button, since the edge of the bell-shaped or dome-shaped button body 5 is pressed against the base plate 2.
  • the sealing effect can be further improved by a wedge-shaped web 17 of the key body 5 projecting from this edge 6 against the base plate 2.
  • the fixed contacts 18, fixed in the manner of a printed circuit on the base plate 2 below the key body 5, which are insulated from one another when the key is not actuated, are connected to one another by an electrically conductive covering 19 which is arranged on the ceiling 20 of the key body 5, when the dome-shaped or bell-shaped key body 5 is caused to break in by a pressure acting on the key body in the direction of the axis 21 of the key, and as a result the conductive coating 19 comes to rest on the base plate 2, in particular on the fixed contacts 18. If the pressure on the key body 5 is ended, the Ta jumps main body 5 automatically back to its original shape.
  • the sealing of the contact space 16 with respect to the outside of the key can be further improved if the key housing part 1 is provided in the region of the edge 6 of the key body 5 with an outer circumferential edge attachment 25 which has a circumferential, wedge-shaped web directed towards the base plate 2 28 has.
  • this web 28 presses into an elastic mat 29, indicated in dashed lines in the figure, placed on the plate 2, which for the area of the plate 2, which is delimited by one of the webs 9, Has recesses.
  • Such a mat 29 is e.g. to shield electrostatic interference from a keyboard.
  • the housing part 1 is provided in the direction of the axis 21 on its side facing away from the open side of the key body 5 with a hollow cylindrical projection 22 which has grooves 24 directed parallel to the axis 21 on its inside.
  • Ramp bodies 23 are arranged in these grooves, which have flatter sliding surfaces on one side 26, which faces away from the key body 5, than on their other side 27.
  • a key cap provided with resilient snap arms, the snap arms of which slide in the grooves 24, can thereby be easily connected to the housing part 1.
  • the snap arms which spring back to the axis 21 can slide over the ramp bodies 23 slightly from the sides 26, but are then locked by the sides 27 with projections provided at the ends of the snap arms and directed against the grooves 24. If you press the key cap further, it touches the central one The key body 5 protrudes and finally brings it to collapse or collapse. If the key cap is released, it is brought back into the starting position by the key body 5.
  • keyboards can be built in an uncomplicated manner, keyboards can be changed in their structure, and finally key modules can be exchanged.

Landscapes

  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Eye Examination Apparatus (AREA)
  • Massaging Devices (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Lock And Its Accessories (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Cable Accessories (AREA)
  • Insulated Conductors (AREA)
  • Mechanical Control Devices (AREA)

Abstract

A bell or dome-shaped key member of elastic material is fitted at its edge which bounds the open side of the key member into a groove of a key housing part which can be latched to a printed circuitboard, the fit is provided with a web-like projection 7 such that the key member 5, together with the housing part 1, forms a composite member which can be manipulated in an uncomplicated manner.

Description

Die Erfindung bezieht sich auf eine Taste mit einem glokken- oder kuppelförmigen, aus elastischem Material bestehenden Tastenkörper, der mit einem seine offene Seite begrenzenden Rand zwischen einer Basisplatte und einem Tastengehäuseteil einklemmbar ist.The invention relates to a key with a bell-shaped or dome-shaped, made of elastic material key body, which can be clamped with an edge delimiting its open side between a base plate and a key housing part.

Eine solche Taste ist aus der DE-OS 30 41 470 bekannt. Der dort als Dichtmembran bezeichnete Tastenkörper sitzt mit seinem flachen Außenrand auf der Oberfläche einer dort als Stützteil bezeichneten Basisplatte und wird durch ein dort Uberwurfkappe genanntes Gehäuseteil gegen die Basisplatte gepreßt. Infolgedessen ist der von dem Tastenkörper und der Basisplatte umschlossene Raum, in welchem sich die Kontakte der Taste befinden, gegenüber der Außenwelt abgeschlossen, insbesondere gegenüber der Bedienseite der Taste, so daß zumindest von dieser seite her keine Fremdkörper in den von Tastenkörper und Basisplatte gebildeten Kontaktraum gelangen können.Such a key is known from DE-OS 30 41 470. The key body referred to there as the sealing membrane sits with its flat outer edge on the surface of a base plate referred to there as a support part and is pressed against the base plate by a housing part called a cap there. As a result, the space enclosed by the key body and the base plate, in which the contacts of the key are located, is sealed off from the outside world, in particular from the operating side of the key, so that, at least from this side, no foreign bodies in the contact space formed by the key body and base plate can reach.

Die aus der .DE-OS 30 41 470 bekannte Taste ist außerdem als Tastenmodul verwendbar, se daß aus mehreren solchen Tasten, die an einer Platte befestigt sind, eine Tastatur gebildet werden kann.The key known from .DE-OS 30 41 470 can also be used as a key module, that a keyboard can be formed from several such keys that are attached to a plate.

Bei dieser bekannten taste trägt jedoch eine von der Platte gesonderte seheibe die Festkontakte der taste.In this known button, however, a separate lens from the plate carries the fixed contacts of the button.

Zur Vereinfachung solcher Tasten ist man bestrebt, die Festkontakte Unmittelbar auf einer Platte anzuordnen; an der die Taste befestigt ist. In einem solchen Fall kann nämlich die Zahl der Teile, aus der sich die Taste zusammensetzt, weiter reduziert werden. Der äußere Rand des Tastenkörpers kann dann zwischen einem Gehäuseteil der Taste und dieser Platte eingeklemmt werden.To simplify such buttons, efforts are made to arrange the fixed contacts directly on a plate; at the button is attached. In such a case, the number of parts that make up the key can be further reduced. The outer edge of the key body can then be clamped between a housing part of the key and this plate.

Insbesondere bei der Bestückung von solchen Platten mit Tasten ist es erwünscht, wenn möglichst wenig voneinander gesondert zu handhabende Tastenteile vorliegen.In particular when equipping such plates with keys, it is desirable if there are as few key parts to be handled separately as possible.

Aufgabe vorliegender Erfindung ist es daher, eine Taste der eingangs genannten Art derart auszubilden, daß bei der Befestigung solcher Tasten an einer die Festkontakte der Tasten tragenden Platte nur ein einziges Tastenteil gehandhabt werden muß.The object of the present invention is therefore to design a key of the type mentioned in the introduction in such a way that only a single key part has to be handled when such keys are attached to a plate carrying the fixed contacts of the keys.

Erfindungsgemäßergibt sich die Lösung dieser Aufgabe dadurch, daß das Tastengehäuseteil im Bereich des Tastenkörperrandes auf seiner dem Tastenkörper zugewandten Seite nischenartige Ausnehmungen mit im wesentlichen rechtwinkelig zur Basisplatte vorgesehenen Zugangsöffnungen hat und daß der Tastenkörper im Bereich seines Randes in die Ausnehmungen ragende Ansätze aufweist.E r inventively results in the solution of this object by the fact that the push button housing part in the region of the key body rim has on its side facing the key body side niche-like recesses with substantially perpendicularly provided to the base plate access openings and that the key body in the area has its edge in the recesses projecting lugs.

Auf diese Weise kann der Tastenkörper und das Tastengehäuseteil schon vor dem Fixieren dieser Teile an einer die Festkontakte der Taste tragenden Platte miteinander verbunden werden, ohne daß hierzu besondere Verbindungsmittel, wie z.B. Klebstoff, benötigt werden. Man erhält dadurch einen aus Tastengehäuseteil und Tastenkörper bestehenden Verbundkörper, der unkompliziert gehandhabt werden kann und deshalb den Montagevorgang wesentlich erleichtert., In weiterer Ausgestaltung derErfindung kann vorgesehen sein, daß die nischenartigen Ausnehmungen aus einer zusammenhängenden umlaufenden Nut des Tastengehäuseteiles bestehen und daß der Tastenkörper an seinem Rand einen der Nut entsprechenden stegartigen Ansatz aufweist.In this way, the key body and the key housing part can be connected to one another even before these parts are fixed to a plate carrying the fixed contacts of the key, without the need for special connecting means such as adhesive. This gives a composite body consisting of a key housing part and a key body, which can be handled easily and therefore considerably simplifies the assembly process. In a further embodiment of the invention it can be provided that the niche-like recesses consist of a continuous circumferential groove of the key housing part and that the key body has a web-like approach corresponding to the groove on its edge.

Auf diese Weise ergibt sich ein besonders sicherer Sitz des Tastenkörpers im Tastengehäuseteil.This results in a particularly secure fit of the key body in the key housing part.

Dann kann im Rahmen derErfindungnoch vorgesehen sein, daß das Tastengehäuseteil an seiner parallel zur offenen Seite des Tastenkörpers gerichteten Seite mit Schnapp-Stiften versehen ist.It can then be provided within the scope of the invention that the key housing part is provided with snap pins on its side parallel to the open side of the key body.

Wie an sich bekannt, kann auf diese Weise der aus Tastengehäuseteil und Tastenkörper bestehende Verbundkörper an der die Festkontakte der Taste tragenden Platte besonders unkompliziert befestigt werden.As is known per se, the composite body consisting of the key housing part and the key body can be particularly easily attached to the plate carrying the fixed contacts of the key.

Schließlich kann noch vorgesehen sein, daß der Tastenkörper an seinem Rand einen parallel zur Richtung der Achse der Taste von diesem Rand vorspringenden, keilförmigen umlaufenden Steg aufweist,, daß das Tastengehäuseteil auf seiner Außenseite im Bereich des Randes mit einem umlaufenden Rand-Ansatz versehen ist, der einen parallel zur Richtung der Achse vorspringenden, keilförmigen, umlaufenden Steg hat, und daß das Tastengehäuseteil auf seiner, von der offenen Seite des Tastenkörpers abgewandten Seite einen hohlzylindrischen Ansatz aufweist, daß der Ansatz auf seiner Innenseite mit parallel zur Achse gerichteten Nuten versehen ist, und daß in den Nuten Rampenkörper angeordnet sind, die auf ihrer dem Tastenkörper zugewandten Seite jeweils eine steilere Aufgleitfläche haben, als auf der vom Tastenkörper abgewandten Seite. Nachfolgend wird ein Ausführungsbeispiel der erfindungsgemäßen Taste anhand einer Figur noch näher erläutert.Finally, it can also be provided that the key body has on its edge a wedge-shaped circumferential web projecting from this edge parallel to the direction of the axis of the key, that the key housing part is provided on the outside in the region of the edge with a circumferential edge attachment, which has a wedge-shaped, circumferential web projecting parallel to the direction of the axis, and that the key housing part has a hollow cylindrical projection on its side facing away from the open side of the key body, that the projection is provided on its inside with grooves directed parallel to the axis, and that ramp bodies are arranged in the grooves, each of which has a steeper sliding surface on its side facing the key body than on the side facing away from the key body. An exemplary embodiment of the button according to the invention is explained in more detail below with reference to a figure.

Die Figur zeigt vergrößert und im Schnitt eine Seitenansicht des aus Tastengehäuseteil und Tastenkörper bestehenden Verbundkörpers, der an einer die Festkontakte der Taste tragenden Platte verrastet ist.The figure shows, enlarged and in section, a side view of the composite body consisting of the key housing part and the key body, which is locked on a plate carrying the fixed contacts of the key.

Im einzelnen ist der Figur zu entnehmen, daß der aus einem formstabilen Kunststoff bestehende Tastengehäuseteil 1 mit rechtwinkelig zu einer Basisplatte 2 verlaufenden Seitenwänden 3 einen Raum 4 umschließt, in welchem der aus einem elastischen Kunststoffmaterial oder Gummi bestehende Tastenkörper 5 angeordnet ist.In detail, it can be seen from the figure that the key housing part 1, which is made of a dimensionally stable plastic and with side walls 3 extending at right angles to a base plate 2, encloses a space 4 in which the key body 5, which is made of an elastic plastic material or rubber, is arranged.

Der. etwa kuppel- oder -glockenförmig ausgebildete Tastenkörper 5 weist einen der Platte 2 zugewandten verdickten Rand 6 auf, der mit einem parallel zur Platte 2 und zum Tastengehäuseteil 1 hin gerichteten stegartigen Ansatz 7 versehen ist. Dieser Ansatz 7 ist in eine umlaufende.Nut 8 des Tastengehäuseteiles 1 eingepaßt, die durch zwei Stege 9, 10 begrenzt wird. Die Stege 9, 10 sind zum Zentrum des Tastenkörpers 5 hin gerichtet und umfassen dadurch den Ansatz 7 zusammen mit den Seitenwänden 3 des Tastengehäuseteiles 1 derart, daß der mit dem stegartigen Ansatz 7 in die Nut 8 eingepaßte Tastenkörper 5 auf diese Weise mit dem Tastengehäuseteil 1 verbunden wird.The. approximately dome-shaped or bell-shaped key body 5 has a thickened edge 6 facing the plate 2, which is provided with a web-like extension 7 directed parallel to the plate 2 and to the key housing part 1. This approach 7 is fitted into a circumferential groove 8 of the key housing part 1, which is delimited by two webs 9, 10. The webs 9, 10 are directed towards the center of the key body 5 and thereby include the shoulder 7 together with the side walls 3 of the key housing part 1 such that the key body 5 fitted with the web-like extension 7 into the groove 8 in this way with the key housing part 1 is connected.

Der von der Basisplatte 2 entferntere Steg 10 des Tastengehäuseteiles 1 dient dabei zugleich als Widerlager, um beim Aufsetzen des aus Tastengehäuseteil 1 und Tastenkörper 5 bestehenden Verbundkörpers 11 auf die Basisplatte 2 den in Richtung zur Basisplatte 2 über das Tastengehäuseteil 1 vorstehenden Rand 6 des-Tastenkörpers gegen die Basisplatte 2 zu drücken.The web 10 of the key housing part 1, which is more distant from the base plate 2, also serves as an abutment, so that when the composite body 11 consisting of the key housing part 1 and the key body 5 is placed on the base plate 2, the edge 6 of the key body protruding toward the base plate 2 via the key housing part 1 to press against the base plate 2.

Beim Aufsetzen des Verbundkörpers 11 auf die Basisplatte 2 durchdringen radial federnd ausgebildete Paßstifte 12 in der Basisplatte 2 vorgesehene und den Paßstiften 12 angepaßte Bohrungen 13. Im radial federnden Bereich der Paßstifte 12 sind diese mit einem deren Durchmesser vergrößernden Bund 14 versehen. Dieser Bund 14 kann durch das radiale Zusammendrücken der Paßstifte 12 durch die Bohrung 13 in der Basisplatte 2 hindurchgelangen und verriegelt dann, indem er seinen ursprünglichen Umfang wieder annimmt, den Verbundkörper 11 an der Basisplatte 2. Die radiale Zusammendrückbarkeit der Paßstifte 12 kann z.B. durch eine Schlitzung 15 dieser Stifte bewirkt werden.When the composite body 11 is placed on the base plate 2, radially resilient dowel pins 12 penetrate holes 13 provided in the base plate 2 and adapted to the dowel pins 12. In the radially resilient area of the dowel pins 12, these are provided with a collar 14 which increases their diameter. This collar 14 can pass through the bore 13 in the base plate 2 through the radial compression of the dowel pins 12 and then, by returning to its original circumference, locks the composite body 11 on the base plate 2. The radial compressibility of the dowel pins 12 can e.g. caused by a slit 15 of these pins.

Nach dem Verrasten des Verbundkörpers 11 an der Basisplatte 2 ist ein Kontaktraum 16 gegenüber der Außenwelt, insbesondere gegenüber der Bedienseite der Taste, abgedichtet, da der glocken- bzw. kuppelförmige Tastenkörper 5 mit seinem Rand 6 gegen die Basisplatte 2 gedrückt wird. Dabei kann die Abdichtungswirkung noch durch einen von diesem Rand 6 gegen die Basisplatte 2 vorspringenden keilförmigen Steg 17 des Tastenkörpers 5 verbessert werden.After the composite body 11 has latched onto the base plate 2, a contact space 16 is sealed off from the outside world, in particular from the operating side of the button, since the edge of the bell-shaped or dome-shaped button body 5 is pressed against the base plate 2. The sealing effect can be further improved by a wedge-shaped web 17 of the key body 5 projecting from this edge 6 against the base plate 2.

Die nach Art einer gedruckten Schaltung an der Basisplatte 2 unterhalb des Tastenkörpers 5 fixierten Festkontakte 18, die im unbetätigten Zustand der Taste voneinander isoliert sind, werden durch einen elektrisch leitenden Belag 19, der an der Decke 20 des Tastenkörpers 5 angeordnet ist, miteinander verbunden, wenn der kuppel- bzw. glockenförmige Tastenkörper 5 durch einen in Richtung der Achse 21 der Taste auf den Tastenkörper einwirkenden Druck zum Einbrechen gebracht wird und dadurch der leitende Belag 19 an der Basisplatte 2, insbesondere an den Festkontakten 18, zur Anlage kommt. Wird die Druckeinwirkung auf den Tastenkörper 5 beendet, so springt der Tastenkörper 5 selbsttätig wieder in seine Ausgangsgestalt zurück.The fixed contacts 18, fixed in the manner of a printed circuit on the base plate 2 below the key body 5, which are insulated from one another when the key is not actuated, are connected to one another by an electrically conductive covering 19 which is arranged on the ceiling 20 of the key body 5, when the dome-shaped or bell-shaped key body 5 is caused to break in by a pressure acting on the key body in the direction of the axis 21 of the key, and as a result the conductive coating 19 comes to rest on the base plate 2, in particular on the fixed contacts 18. If the pressure on the key body 5 is ended, the Ta jumps main body 5 automatically back to its original shape.

Die Abdichtung des Kontaktraumes 16 gegenüber der Außenwelt der Taste kann noch weiter verbessert werden, wenn man das Tastengehäuseteil l im Bereich des Randes 6 des Tastenkorpers 5 mit einem äußeren umlaufenden Rand-Ansatz 25 versieht, der einen zur Basisplatte 2 gerichteten, umlaufenden, keilförmigen Steg 28 aufweist. Dieser Steg 28 drückt sich beim Aufsetzen des Verbundkörpers 11 auf die Platte 2 in eine in der Figur strichliert angedeutete, auf die Platte 2 aufgelegte elastische Matte 29, die für den Bereich der Platte 2, der etwa jeweils durch einen der Stege 9 begrenzt wird, Aussparungen aufweist. Eine solche Matte 29 wird z.B. zur Abschirmung elektrostatischer Störfelder von einer Tastatur vorgesehen.The sealing of the contact space 16 with respect to the outside of the key can be further improved if the key housing part 1 is provided in the region of the edge 6 of the key body 5 with an outer circumferential edge attachment 25 which has a circumferential, wedge-shaped web directed towards the base plate 2 28 has. When the composite body 11 is placed on the plate 2, this web 28 presses into an elastic mat 29, indicated in dashed lines in the figure, placed on the plate 2, which for the area of the plate 2, which is delimited by one of the webs 9, Has recesses. Such a mat 29 is e.g. to shield electrostatic interference from a keyboard.

Schließlich ist das Gehäuseteil 1 in Richtung der Achse 21 auf seiner, von der offenen Seite des Tastenkörpers 5 abgewandten Seite, mit einem hohlzylindrischen Ansatz 22 versehen, der auf seiner Innenseite parallel zur Achse 21 gerichtete Nuten 24 aufweist. In diesen Nuten sind Rampenkörper 23 angeordnet, die auf der einen Seite 26, die vom Tastenkörper 5 abgewandt ist, flachere Aufgleitflächen haben, als auf ihrer anderen Seite 27.Finally, the housing part 1 is provided in the direction of the axis 21 on its side facing away from the open side of the key body 5 with a hollow cylindrical projection 22 which has grooves 24 directed parallel to the axis 21 on its inside. Ramp bodies 23 are arranged in these grooves, which have flatter sliding surfaces on one side 26, which faces away from the key body 5, than on their other side 27.

Eine mit federnden Schnapparmen versehen Tastenkappe, wobei deren Schnapparme in den Nuten 24 gleiten, kann dadurch unkompliziert mit dem Gehäuseteil 1 verbunden werden. Beim Aufstecken der Tastenkappe auf den Ansatz 22 können die zur Achse 21 federnd zurückweichenden Schnapparme die Rampenkörper 23 von den Seiten 26 her leicht übergleiten, werden jedoch dann mit an den Enden der Schnapparme vorgesehenen, gegen die Nuten 24 gerichteten Vorsprüngen durch die Seiten 27 verriegelt. Beim weiteren Eindrücken der Tastenkappe berührt diese mit zentralen Vorsprüngen den Tastenkörper 5 und bringt ihn schließlich zum Ein- bzw. Zusammenbrechen. Wird die Tastenkappe losgelassen, so wird sie durch den Tastenkörper 5 wieder in die Ausgangslage zurückgebracht.A key cap provided with resilient snap arms, the snap arms of which slide in the grooves 24, can thereby be easily connected to the housing part 1. When the button cap is attached to the extension 22, the snap arms which spring back to the axis 21 can slide over the ramp bodies 23 slightly from the sides 26, but are then locked by the sides 27 with projections provided at the ends of the snap arms and directed against the grooves 24. If you press the key cap further, it touches the central one The key body 5 protrudes and finally brings it to collapse or collapse. If the key cap is released, it is brought back into the starting position by the key body 5.

Durch entsprechende Bemessung der Haltekräfte zwischen Kappe und Gehäuseteil 1, sowie zwischen Gehäuseteil 1 bzw. Verbundkörper 11 und Platte 2 kann erreicht werden, daß sich die Kappe vom Gehäuseteil 1 bzw. vom Verbundkörper leichter wieder abziehen läßt, als der Verbundkörper 11 von der Platte 2.By appropriate dimensioning of the holding forces between the cap and the housing part 1 and between the housing part 1 or the composite body 11 and the plate 2, it can be achieved that the cap can be removed from the housing part 1 or the composite body more easily than the composite body 11 from the plate 2 .

Mit vorliegendem Verbundkörper 11 wird ein Tastenbaustein geschaffen, mit dessen Hilfe unkompliziert Tastaturen aufgebaut, Tastaturen in ihrem Aufbau geändert und schließlich Tastenbausteine ausgetauscht werden können.With the present composite body 11, a key module is created, with the aid of which keyboards can be built in an uncomplicated manner, keyboards can be changed in their structure, and finally key modules can be exchanged.

Claims (6)

1. Taste mit einem glocken- oder kuppelförmigen, aus elastischem Material bestehenden Tastenkörper, der mit einem seine offene Seite begrenzenden Rand zwischen einer Basisplatte uhd einem Tastengehäuseteil eihklemmbar ist, dadurch gekennzeichnet , daß das Tastengehäuseteil (1) im Bereich des Tastenkörperrandes (6) auf seiner dem Tastenkörper (5) zugewandten Seite nischenartige Ausnehmungen (8) mit im wesentlichen rechtwinkelig zur Basisplatte (2) vorgesehenen Zugangsöffnungen hat und daß der Tastenkörper (5) im Bereich seines Randes (6) in die Ausnehmungen ragende Ansätze (7) aufweist.1. key with a bell-shaped or dome-shaped, made of elastic material key body, which can be clamped with a border delimiting its open side between a base plate and a key housing part, characterized in that the key housing part (1) in the region of the key body edge (6) its side facing the key body (5) has niche-like recesses (8) with access openings provided essentially at right angles to the base plate (2) and that the key body (5) has projections (7) projecting into the recesses in the region of its edge (6). 2. Taste nach Anspruch 1,
dadurch gekennzeichnet , daß die nischenartigen Ausnehmungen aus einer zusammenhängenden umlaufenden Nut (8) des Tastengehäuseteiles (1) bestehen, und daß der Tastenkörper (5) an seinem Rand (6) einen der Nut (8) entsprechenden stegartigen Ansatz (7) aufweist.2. Key according to claim 1,
characterized in that the niche-like recesses consist of a continuous circumferential groove (8) of the key housing part (1), and that the key body (5) has on its edge (6) a web-like extension (7) corresponding to the groove (8). 3. Taste nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, daß das Tastengehäuseteil (1) an seiner parallel zur offenen Seite des Tastenkörpers gerichteten Seite mit Schnapp-Stiften (12) versehen ist, die widerhakenartige Ansätze aufweisen.3. Key according to one of claims 1 or 2,
characterized in that the key housing part (1) is provided on its side parallel to the open side of the key body with snap pins (12) which have barb-like projections. 4. Taste nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet , daß der Tastenkörper (5) an seinem Rand (6) einen parallel zur Richtung der Achse (21) der Taste von diesem Rand (6) vorspringenden, keilförmigen, umlaufenden Steg (17) aufweist.4. Key according to one of the preceding claims, characterized in that the key body (5) on its edge (6) a wedge-shaped, circumferential web (17) projecting parallel to the direction of the axis (21) of the key from this edge (6) having. 5. Taste nach Anspruch 4,
dadurch gekennzeichnet , daß das Tastengehäuseteil (1) auf seiner Außenseite im Bereich des Randes (6) mit einem umlaufenden Rand-Ansatz (25) versehen ist, der einen parallel zur Richtung der Achse (21) vorspringenden, keilförmigen, umlaufenden Steg (28) hat.5. Key according to claim 4,
characterized in that the key housing part (1) is provided on its outside in the region of the edge (6) with a circumferential edge extension (25) which projects in a wedge-shaped, circumferential web (28) projecting parallel to the direction of the axis (21) Has. 6. Taste nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet , daß das Tastengehäuseteil (1) auf seiner, von der offenen Seite des Tastenkörpers (5) abgewandten Seite einen hohlzylindrischen Ansatz (22) aufweist,
daß der Ansatz (22) auf seiner Innenseite mit parallel zur Achse (21) gerichteten Nuten (24) versehen ist, und daß in den Nuten (24) Rampenkörper (23) angeordnet sind, die auf ihrer dem Tastenkörper zugewandten Seite (27) jeweils eine steilere Aufgleitfläche haben, als auf der vom Tastenkörper (5) abgewandten Seite (26).6. Key according to one of the preceding claims, characterized in that the key housing part (1) on its side facing away from the open side of the key body (5) has a hollow cylindrical extension (22),
that the shoulder (22) is provided on its inside with grooves (24) directed parallel to the axis (21), and that in the grooves (24) ramp bodies (23) are arranged, each on their side facing the key body (27) have a steeper sliding surface than on the side (26) facing away from the key body (5).
EP84114473A 1983-12-02 1984-11-29 Push button Expired EP0144916B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114473T ATE29335T1 (en) 1983-12-02 1984-11-29 BUTTON.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8334679U DE8334679U1 (en) 1983-12-02 1983-12-02 button
DE8334679U 1983-12-02

Publications (3)

Publication Number Publication Date
EP0144916A2 true EP0144916A2 (en) 1985-06-19
EP0144916A3 EP0144916A3 (en) 1985-07-17
EP0144916B1 EP0144916B1 (en) 1987-09-02

Family

ID=6759489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114473A Expired EP0144916B1 (en) 1983-12-02 1984-11-29 Push button

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Country Link
US (1) US4641004A (en)
EP (1) EP0144916B1 (en)
JP (1) JPS60136115A (en)
AT (1) ATE29335T1 (en)
CA (1) CA1246645A (en)
DE (2) DE8334679U1 (en)
DK (1) DK571384A (en)
ES (1) ES293430Y (en)
NO (1) NO844734L (en)
YU (1) YU200784A (en)

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EP0558239A1 (en) * 1992-02-22 1993-09-01 McKechnie UK Limited Improvements in or relating to key button switches
WO2001015186A1 (en) * 1999-08-24 2001-03-01 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Switch to be mounted on a design element in the passenger room of a motor vehicle
DE19726486B4 (en) * 1997-06-21 2007-05-16 Siemens Ag switching element

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US5144103A (en) * 1990-03-09 1992-09-01 Canon Kabushiki Kaisha Key switch
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AU8912391A (en) * 1990-12-20 1992-07-22 Pillsbury Company, The Temperature controlled susceptor structure
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US5145058A (en) * 1991-07-16 1992-09-08 Lee Sam San Notebook computer key
US5285038A (en) * 1993-01-19 1994-02-08 Delco Electronics Corporation Lighted momentary push-button switch assembly having integral switch actuator and lamp locator
CA2108515C (en) * 1993-03-08 2002-12-17 Ward E. Strang Button well compression seal assembly
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DE19817369A1 (en) * 1997-05-07 1998-11-12 Marquardt Gmbh Switch for washing machine, etc.
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FR2587833A1 (en) * 1985-09-21 1987-03-27 Rheinmetall Gmbh Multiple pushbutton switch panel for machine control
EP0558239A1 (en) * 1992-02-22 1993-09-01 McKechnie UK Limited Improvements in or relating to key button switches
DE19726486B4 (en) * 1997-06-21 2007-05-16 Siemens Ag switching element
WO2001015186A1 (en) * 1999-08-24 2001-03-01 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Switch to be mounted on a design element in the passenger room of a motor vehicle
US6765159B1 (en) 1999-08-24 2004-07-20 Brose Fahrzeugteile Gmbh &Co. Switch to be mounted on a design element in the passenger compartment of a motor vehicle

Also Published As

Publication number Publication date
JPS60136115A (en) 1985-07-19
NO844734L (en) 1985-06-03
EP0144916A3 (en) 1985-07-17
YU200784A (en) 1986-10-31
ES293430Y (en) 1987-04-16
DK571384A (en) 1985-06-03
CA1246645A (en) 1988-12-13
EP0144916B1 (en) 1987-09-02
DK571384D0 (en) 1984-11-30
ES293430U (en) 1986-08-01
DE3465824D1 (en) 1987-10-08
DE8334679U1 (en) 1984-03-01
ATE29335T1 (en) 1987-09-15
US4641004A (en) 1987-02-03

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