EP0042131A1 - Bank of electric key switches - Google Patents

Bank of electric key switches Download PDF

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Publication number
EP0042131A1
EP0042131A1 EP81104409A EP81104409A EP0042131A1 EP 0042131 A1 EP0042131 A1 EP 0042131A1 EP 81104409 A EP81104409 A EP 81104409A EP 81104409 A EP81104409 A EP 81104409A EP 0042131 A1 EP0042131 A1 EP 0042131A1
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EP
European Patent Office
Prior art keywords
key
cover plate
button
contact according
lowered
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Granted
Application number
EP81104409A
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German (de)
French (fr)
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EP0042131B1 (en
Inventor
Gerd Kammerer
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Graesslin KG
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Dieter Graesslin Feinwerktechnik
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Publication of EP0042131A1 publication Critical patent/EP0042131A1/en
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    • 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

Definitions

  • the invention relates to an electrical key contact according to the preamble of claim 1.
  • the aim is to arrange the necessary buttons for operating the key contacts as close as possible to one another so that the key contact field can be kept as small as possible or the largest possible key buttons can be used for a given area of the key contact field.
  • This can be achieved by attaching the identification of the keys on the key buttons themselves.
  • this labeling has the disadvantage that when assembling the key contact fields there must be as many differently labeled key buttons as there are different labels.
  • the application of the marking on the key buttons has the disadvantage that the marking loses sharpness and recognizability due to the constant contact. For this reason, the markings are often placed next to the buttons on the cover plate. In this case, only one type of button needs to be kept ready when mounting the keypad.
  • the Assignment of labeling and associated button must be clear and easy to recognize, this form of labeling requires a relatively large distance between the buttons.
  • the invention has for its object to develop an electrical key contact of the type mentioned, of which a large number can lie close together in a key contact field without the key buttons themselves having to carry an identification.
  • the key button and the keyhole have a circular segment-like or similar shape
  • the complementary circular segment or similar segment which has remained in the cover plate can be used to identify the key. This results in a very clear assignment of the identification to the associated key for a key contact field. This impression of belonging is reinforced by the pulling out or lowering of the area of the cover plate surrounding the key button. Thanks to the invention, the key buttons can therefore be arranged very closely next to one another in a contact field, without any doubt as to the assignment of the labels printed on the cover plate or attached in some other way. There is no risk of the marking being abraded by operating fingers.
  • openings 15 are provided in the broken-out cover plate 11 for fourteen key buttons 13 lying side by side in rows.
  • the cross section of the button buttons and the button opening in the cover plate 11 have the shape of a circular section, the center angle a (being approximately 250 °.
  • the area 17 of the cover plate lying within a circle 18 around the center point M of the circular section opening 15 is in accordance with the embodiment 2 pulled out to the operating side, specifically with a convex spherical curvature in the exemplary embodiment shown .. Accordingly, in the embodiments according to FIGS.
  • the area 19 of the cover plate lying around the opening 15 is lowered with respect to the main plane of the cover plate, and with a concave spherical surface-shaped curvature in the exemplary embodiments shown, this design of the cover plate shown in the figures makes the assignment of the identification to the associated key even clearer if, as in the exemplary embodiments, the operating surface of the button 13 also has a spherical surface-shaped form g is formed and the radius R T of this spherical surface is as large as the radius R, the spherical surface of the advanced or lowered region 17 or 19, then there is an optical impression as if the labeling of the key on the side of a key with a circular Across cut upset.
  • the area 19 in FIG. 3 is preferably so far lowered with respect to the main plane of the cover plate 11 that when the button 13 is pressed, it forms a uniform spherical surface together with the lowered area 19.
  • the key buttons do not protrude beyond the main plane of the cover plate in the non-pressed state, so that they lie completely in a protective recess.
  • the markings can be printed on the cover plate, and only a single type of button without a label is required to populate the cover plate.
  • FIG. 1 despite the relatively dense juxtaposition of the key buttons, there is a completely unambiguous assignment of the names to the keys. This assignment can be emphasized even more clearly by structuring the individual surface areas differently.
  • the button buttons 13 and the drawn-out or lowered areas 17, 19 surrounding the button buttons can have a high-gloss finish, while the other areas of the cover plate 11 have a matt surface.
  • the key buttons 13 shown in the figures and the key openings 15 do not necessarily have to be designed in the form of a circular segment.
  • the circular sections can also be modified into elliptical sections or have a similar shape.
  • the extended or lowered regions 17 and 19 do not need to have an arched shape. It is also conceivable that they protrude from or withdraw into the cover plate 11 in a cylindrical shape, that is to say with vertical surfaces.
  • the curvature of the surfaces of the key buttons 13 and / or of the extended or lowered regions 17, 19 pointing in the direction of operation can be designed to deepen towards the center.

Abstract

1. Electric bank of key contacts with the key contacts being arranged in a basic lattice of rectangular, preferably square fields, and with a cover plate (11) having openings (15) through which the key buttons (13) of the key contacts project to the service side, characterized in that said button openings (15) in the cover plate (11) and the cross sections of the key buttons (13) have the shape of a circular segment, an elliptical segment or a similarly shaped segment, and that the marking of the indifidual buttons is arranged by providing corresponding characters (0-9, S, M, U, L) on the cover plate (11) in the complementary segment of said circular and elliptical segment respectively.

Description

Die Erfindung betrifft einen elektrischen Tastenkontakt gemäß dem Oberbegriff des Anspruches 1.The invention relates to an electrical key contact according to the preamble of claim 1.

Beim Bau von Tastenkontaktfeldern für die Dateneingabe ist man bestrebt, die erforderlichen Knöpfe zur Bedienung der Tastenkontakte möglichst dicht nebeneinander anzuordnen, damit das Tastenkontaktfeld möglichst klein gehalten werden kann bzw. bei gegebener Fläche des Tastenkontaktfeldes möglichst große Tastenknöpfe verwendet werden können. Dies ist erreichbar, wenn man die Kennzeichnung der Tasten auf den Tastenknöpfen selbst anbringt. Diese Anbringung der Kennzeichnung hat jedoch den Nachteil, daß man bei der Montage der Tastenkontaktfelder so viele unterschiedlich gekennzeichnete Tastenknöpfe bereithalten muß, wie unterschiedliche Kennzeichnungen vorkommen. Außerdem hat die Aufbringung der Kennzeichnung auf den Tastenknöpfen den Nachteil, daß die Kennzeichnung durch die ständige Berührung an Schärfe und Erkennbarkeit verliert. Aus diesem Grunde werden die Kennzeichnungen häufig neben den Tastenknöpfen auf der Abdeckplatte angebracht. In diesem Falle braucht bei der Montage des Tastenfeldes nur eine Tastenknopfsorte bereitgehalten zu werden. Da jedoch die Zuordnung von Kennzeichnung und zugehörigem Tastenknopf eindeutig und leicht erkennbar sein muß, erfordert diese Form der Kennzeichnung einen relativ großen Abstand zwischen den Tastenknöpfen.When building key contact fields for data entry, the aim is to arrange the necessary buttons for operating the key contacts as close as possible to one another so that the key contact field can be kept as small as possible or the largest possible key buttons can be used for a given area of the key contact field. This can be achieved by attaching the identification of the keys on the key buttons themselves. However, this labeling has the disadvantage that when assembling the key contact fields there must be as many differently labeled key buttons as there are different labels. In addition, the application of the marking on the key buttons has the disadvantage that the marking loses sharpness and recognizability due to the constant contact. For this reason, the markings are often placed next to the buttons on the cover plate. In this case, only one type of button needs to be kept ready when mounting the keypad. However, since the Assignment of labeling and associated button must be clear and easy to recognize, this form of labeling requires a relatively large distance between the buttons.

Der Erfindung liegt die Aufgabe zugrunde, einen elektrischen Tastenkontakt der eingangs genannten Art zu entwickeln, von dem eine Vielzahl in einem Tastenkontaktfeld dicht nebeneinander liegen können, ohne daß die Tastenknöpfe selbst eine Kennzeichnung zu tragen brauchen.The invention has for its object to develop an electrical key contact of the type mentioned, of which a large number can lie close together in a key contact field without the key buttons themselves having to carry an identification.

Zur Lösung dieser Aufgabe wird ein elektrischer Tastenkontakt nach dem Oberbegriff des Anspruches 1 vorgeschlagen, welcher erfindungsgemäß die im kennzeichnenden Teil des Anspruches 1 genannten Merkmale hat.To solve this problem, an electrical key contact is proposed according to the preamble of claim 1, which according to the invention has the features mentioned in the characterizing part of claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen genannt.Advantageous developments of the invention are mentioned in the subclaims.

Dadurch,.daß der Tastenknopf und das Tastenloch eine kreisabschnittsförmige oder ähnliche Form haben, kann zur Kennzeichnung der-Taste der in der Abdeckplatte stehengebliebene komplementäre Kreisabschnitt oder ähnliche Abschnitt verwendet werden. Hierdurch ergibt sich bei einem Tastenkontaktfeld optisch eine sehr klare Zuordnung der Kennzeichnung zur zugehörigen Taste. Dieser Zugehörigkeitseindruck wird noch verstärkt durch das Hervorziehen oder Absenken des den Tastenknopf umgebenden Bereiches der Abdeckplatte. Dank der Erfindung können die Tastenknöpfe in einem Kontaktfeld daher sehr eng nebeneinander angeordnet werden, ohne daß Zweifel an der Zuordnung der auf der Abdeckplatte aufgedruckten oder in anderer Weise angebrachten Kennzeichnungen entstehen. Die Gefahr eines Abriebs der Kennzeichnung durch bedienende Finger ist nicht vorhanden.Because the key button and the keyhole have a circular segment-like or similar shape, the complementary circular segment or similar segment which has remained in the cover plate can be used to identify the key. This results in a very clear assignment of the identification to the associated key for a key contact field. This impression of belonging is reinforced by the pulling out or lowering of the area of the cover plate surrounding the key button. Thanks to the invention, the key buttons can therefore be arranged very closely next to one another in a contact field, without any doubt as to the assignment of the labels printed on the cover plate or attached in some other way. There is no risk of the marking being abraded by operating fingers.

Anhand des in den Figuren gezeigten Ausführungsbeipieles soll die Erfindung näher erläutert werden. Es zeigen

  • Fig. 1 ein Tastenfeld mit Tastenkontakten gemäß der Erfindung in Draufsicht,
  • Fig. 2 bis 4 einen Schnitt durch den oberen Teil eines Tastenknopfes mit umgebender Abdeckplatte längs der Linie A-B in Fig. 1 für drei verschiedene Ausführungsformen von Tastenknopf um umgebenden Abdeckplattenbereich.
The invention will be explained in more detail with the aid of the exemplary embodiment shown in the figures. Show it
  • 1 is a keypad with key contacts according to the invention in plan view,
  • Fig. 2 to 4 shows a section through the upper part of a button with surrounding cover plate along the line AB in Fig. 1 for three different embodiments of the button around the surrounding cover plate area.

In Fig. 1 sind in der herausgebrochen dargestellten Abdeckplatte 11 Öffnungen 15 für vierzehn in Reihen nebeneinander liegende Tastenknöpfe 13 vorgesehen. Der Querschnitt der Tastenknöpfe und die Tastenöffnung in der Abdeckplatte 11 haben die Form eines Kreisabschnittes, wobei der Mittelpunktswinkel a( etwa 250° beträgt. Der innerhalb eines Kreises 18 um den Kreismittelpunkt M der kreisabschnittsförmigen Öffnung 15 liegende Bereich 17 der Abdeckplatte ist bei der Ausführungsform gemäß Fig. 2 zur Bedienungsseite hin hervorgezogen, und zwar mit einer konvexen kugelflächenförmigen Wölbung im gezeigten Ausführungsbeispiel. Entsprechend ist bei den Ausführungsformen gemäß Fig. 3 und 4 der um die Öffnung 15 liegende Bereich 19 der Abdeckplatte in bezug auf die Hauptebene der Abdeckplatte abgesenkt, und zwar mit einer konkaven kugelflächenförmigen Wölbung in den gezeigten Ausführungsbeispielen. Durch diese in den Figuren gezeigte Formgebung der Abdeckplatte wird die Zuordnung der Kennzeichnung zur zugehörigen Taste noch deutlicher. Wenn, wie in den Ausführungsbeispielen geschehen, auch die Bedienungsfläche des Tastenknopfes 13 kugelflächenförmig ausgebildet ist und der Radius RT dieser Kugelfläche ebenso groß ist wie der Radius R, der Kugelfläche des vorgezogenen bzw. abgesenkten Bereiches 17 bzw. 19, dann ergibt sich optisch ein Eindruck, als wenn die Kennzeichnung der Taste seitlich auf einer Taste mit kreisförmigem Querschnitt aufgebracht sei. Vorzugsweise ist der Bereich 17 in Fig. 2 so weit zur Bedienungsseite hin aus der Hauptebene der Abdeckplatte 11 hervorgezogen, daß bei gedrücktem Tastenknopf 13 dieser zusammen mit dem gewölbten Bereich 17 eine einheitliche kugelförmige Fläche bildet. Entsprechend ist der Bereich 19 in Fig. 3 vorzugsweise soweit in bezug auf die Hauptebene der Abdeckplatte 11 abgesenkt, daß bei gedrücktem Tastenknopf 13 dieser zusammen mit dem abgesenkten Bereich 19 eine einheitliche kugelförmige Fläche bildet.In Fig. 1, openings 15 are provided in the broken-out cover plate 11 for fourteen key buttons 13 lying side by side in rows. The cross section of the button buttons and the button opening in the cover plate 11 have the shape of a circular section, the center angle a (being approximately 250 °. The area 17 of the cover plate lying within a circle 18 around the center point M of the circular section opening 15 is in accordance with the embodiment 2 pulled out to the operating side, specifically with a convex spherical curvature in the exemplary embodiment shown .. Accordingly, in the embodiments according to FIGS. 3 and 4, the area 19 of the cover plate lying around the opening 15 is lowered with respect to the main plane of the cover plate, and with a concave spherical surface-shaped curvature in the exemplary embodiments shown, this design of the cover plate shown in the figures makes the assignment of the identification to the associated key even clearer if, as in the exemplary embodiments, the operating surface of the button 13 also has a spherical surface-shaped form g is formed and the radius R T of this spherical surface is as large as the radius R, the spherical surface of the advanced or lowered region 17 or 19, then there is an optical impression as if the labeling of the key on the side of a key with a circular Across cut upset. The area 17 in FIG. 2 is preferably drawn out so far towards the operating side from the main plane of the cover plate 11 that when the button 13 is pressed, this forms a uniform spherical surface together with the curved area 17. Correspondingly, the area 19 in FIG. 3 is preferably so far lowered with respect to the main plane of the cover plate 11 that when the button 13 is pressed, it forms a uniform spherical surface together with the lowered area 19.

Bei den Ausführungsformen nach Fig. 3 und 4 ragen die Tastenknöpfe im nicht gedrückten Zustand nicht über die Hauptebene der Abdeckplatte hinaus, so daß sie vollständig in einer schützenden Versenkung liegen.In the embodiments according to FIGS. 3 and 4, the key buttons do not protrude beyond the main plane of the cover plate in the non-pressed state, so that they lie completely in a protective recess.

Beim Bau eines Tastenkontaktfeldes mit den Tastenkontakten gemäß der Erfindung können die Kennzeichnungen auf der Abdeckplatte aufgedruckt werden, und zur Bestückung der Abdeckplatte ist nur eine einzige, bezeichnungsfreie Druckknopfart erforderlich. Wie Fig. 1 zeigt, besteht trotz des verhältnismäßig dichten Nebeneinanderliegens der Tastenknöpfe eine völlig zweifelsfreie Zuordnung der Bezeichnungen zu den Tasten. Die'se Zuordnung kann noch deutlicher dadurch hervorgehoben werden, daß die einzelnen Oberflächenbereiche unterschiedlich strukturiert wer- den. So können beispielsweise die Tastenknöpfe 13 und die die Tastenknöpfe umgebenden hervorgezogenen oder abgesenkten Bereiche17, 19 hochglänzend ausgeführt sein, während die übrigen Bereiche der Abdeckplatte 11 eine matte Oberfläche haben.When building a key contact field with the key contacts according to the invention, the markings can be printed on the cover plate, and only a single type of button without a label is required to populate the cover plate. As shown in FIG. 1, despite the relatively dense juxtaposition of the key buttons, there is a completely unambiguous assignment of the names to the keys. This assignment can be emphasized even more clearly by structuring the individual surface areas differently. For example, the button buttons 13 and the drawn-out or lowered areas 17, 19 surrounding the button buttons can have a high-gloss finish, while the other areas of the cover plate 11 have a matt surface.

Es versteht sich, daß die in den Figuren gezeigten Tastenknöpfe 13 und die Tastenöffnungen 15 nicht unbedingt kreisabschnittsförmig ausgeführt zu sein brauchen. Die Kreisabschnitte können auch zu Ellipsenabschnitten abgewandelt sein oder eine ähnliche Form haben. Entsprechendes gilt für die die Tastenknöpfe umgebenden vorgezogenen bzw. abgesenkten Bereiche 17 bzw. 19. Selbstverständlich brauchen die hervorgezogenen bzw. abgesenkten Bereiche 17 bzw. 19 nicht eine gewölbte Form zu haben. Es ist auch denkbar, daß sie in zylindrischer Form, also mit senkrechten Flächen zur Abdeckplatte 11 aus dieser hervortreten oder in diese zurücktreten. Ferner kann die Wölbung der in Bedienungsrichtung weisenden Flächen der Tastenknöpfe 13 und/oder der vorgezogenen oder abgesenkten Bereiche 17, 19 sich zum Zentrum hin vertiefend ausgebildet sein.It is understood that the key buttons 13 shown in the figures and the key openings 15 do not necessarily have to be designed in the form of a circular segment. The circular sections can also be modified into elliptical sections or have a similar shape. Corresponding applies to the extended or lowered regions 17 and 19 surrounding the key buttons. Of course, the extended or lowered regions 17 and 19 do not need to have an arched shape. It is also conceivable that they protrude from or withdraw into the cover plate 11 in a cylindrical shape, that is to say with vertical surfaces. Furthermore, the curvature of the surfaces of the key buttons 13 and / or of the extended or lowered regions 17, 19 pointing in the direction of operation can be designed to deepen towards the center.

Claims (11)

1. Elektrischer Tastenkontakt, der von einer Abdeckplatte abgedeckt ist, die eine Öffnung hat, durch welche der Tastenknopf zur Bedienungsseite hin herausragt, dadurch gekennzeichnet, daß die Tastenöffnung (15) in der Abdeckplatte (11) und der Querschnitt des Tastenknopfes (13) die Form eines Kreisabschnittes, eines Ellipsenabschnittes oder eines ähnlich geformten Abschnitts hat.1. Electrical key contact, which is covered by a cover plate which has an opening through which the button protrudes toward the operating side, characterized in that the key opening (15) in the cover plate (11) and the cross section of the button (13) Has the shape of a circular section, an elliptical section or a similarly shaped section. 2. Elektrischer Tastenkontakt nach Anspruch 1, dadurch gekennzeichnet, daß der Mittelpunktswinkel (α) der genannten Abschnittsform größer als 180° ist.2. Electrical key contact according to claim 1, characterized in that the central angle (α) of said section shape is greater than 180 °. 3. Elektrischer Tastenkontakt nach Anspruch 2, dadurch gekennzeichnet, daß der Mittelpunktswinkel («) im Bereich von 220 bis 280° liegt.3. Electrical key contact according to claim 2, characterized in that the central angle («) is in the range of 220 to 280 °. 4. Elektrischer Tastenkontakt nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß ein von einem Kreis bzw. einer Ellipse oder einer ähnlichen Kurve, der/die konzentrisch zum Kreismittelpunkt bzw. Ellipsenmittelpunkt der Tastenöffnung (15) liegt, begrenzter Bereich (17) der Abdeckplatte (11) zur Bedienungsseite hin aus der Hauptebene der Abdeckplatte hervorgezogen ist, und zwar höchstens so weit, wie der Tastenknopf (13) im gedrückten Zustand aus der Hauptebene der Abdeckplatte hervorragt.4. Electrical key contact according to one of claims 1 to 3, characterized in that one of a circle or an ellipse or a similar curve which is concentric to the center of the circle or center of the ellipse of the key opening (15), limited area (17) the cover plate (11) is pulled out towards the operating side from the main plane of the cover plate, at most as far as the button (13) protrudes from the main plane of the cover plate when pressed. 5. Elektrischer Tastenkontakt nach Anspruch 4, dadurch gekennzeichnet, daß die Oberfläche des um den Tastenknopf hervorgezogenen Bereiches (17) der Abdeckplatte (11) konvex gewölbt ist, und zwar vorzugsweise kugelförmig.5. Electrical key contact according to claim 4, characterized in that the surface of the pulled out around the key area (17) of the cover plate (11) is convex, preferably spherical. 6. Elektrischer Tastenkontakt nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß ein von einem Kreis bzw. einer Ellipse oder einer ähnlichen Kurve, der/die konzentrisch zum Kreismittelpunkt bzw. Ellipsenmittelpunkt der Tastenöffnung (15) liegt, begrenzter Bereich (19) der Abdeckplatte (11) in bezug auf die Hauptebene der Abdeckplatte abgesenkt ist und daß der Tastenknopf im nicht gedrückten Zustand aus der Hauptebene der Abdeckplatte nicht herausragt.6. Electrical key contact according to one of claims 1 to 3, characterized in that one of a circle or an ellipse or a similar curve which / which is concentric to the center of the circle or center of the ellipse of the key opening (15), limited area (19) the cover plate (11) is lowered with respect to the main plane of the cover plate and that the key button does not protrude from the main plane of the cover plate when it is not pressed. 7. Elektrischer Tastenkontakt nach Anspruch 6, dadurch gekennzeichnet, daß die Oberfläche des um den Tastenknopf7. Electrical key contact according to claim 6, characterized in that the surface of the around the button (13) abgesenkten Bereiches (19) der Abdeckplatte (11) konkav gewölbt ist, und zwar vorzugsweise kugelförmig. 8. Elektrischer Tastenkontakt nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß der abgesenkte Bereich (19) soweit abgesenkt ist, daß im gedrückten Zustand des Tastenknopfes (13) ein stufenloser Übergang zwischen dem abgesenkten Bereich (19) und der Bedienungsfläche des Tastenknopfes (13) besteht.(13) of the lowered region (19) of the cover plate (11) is concave, preferably spherical. 8. Electrical key contact according to claim 6 or 7, characterized in that the lowered area (19) is so far lowered that in the pressed state of the button (13) a smooth transition between the lowered area (19) and the operating surface of the button (13 ) consists. 9. Elektrischer Tastenkontakt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Bedienungsfläche des Tastenknopfes konvex oder konkav gewölbt ist, und zwar vorzugsweise kugelflächenförmig.9. Electrical key contact according to one of the preceding claims, characterized in that the operating surface of the key button is convex or concave, preferably spherical. 10. Tastenkontakt nach Anspruch 9, dadurch gekennzeichnet, daß der Radius der kugelflächenförmig oder anders gewölbten Bedienungsfläche des Tastenknopfes und der Radius des um den Tastenknopf herum hervorgezogenen oder abgesenkten kugelflächenförmig oder anders gewölbten Bereiches der Abdeckplatte gleich groß sind.10. Key contact according to claim 9, characterized in that the radius of the spherical surface or other curved operating surface of the button and the radius of the pulled out or lowered around the button button spherical or other curved area of the cover plate are the same size. 11. Tastenkontakte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Tastenkontakte in Reihen nebeneinander unter einer Abdeckplatte (11) angeordnet sind, wobei die unsymmetrischen Tastenöffnungen und Tastenknöpfe der Tastenkontakte alle mit gleicher Winkellage in bezug auf die Abdeckplatte (11) orientiert sind.11. Key contacts according to one of the preceding claims, characterized in that the key contacts in rows next to one another under a cover plate (11) are arranged, the asymmetrical key openings and key buttons of the key contacts are all oriented at the same angular position with respect to the cover plate (11).
EP81104409A 1980-06-18 1981-06-09 Bank of electric key switches Expired EP0042131B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE8016058U DE8016058U1 (en) 1980-06-18 1980-06-18 Electrical key contact
DE8016058U 1980-06-18
US06/270,312 US4420666A (en) 1980-06-18 1981-06-04 Electrical key contact

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EP0042131A1 true EP0042131A1 (en) 1981-12-23
EP0042131B1 EP0042131B1 (en) 1985-01-16

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EP81104409A Expired EP0042131B1 (en) 1980-06-18 1981-06-09 Bank of electric key switches

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US (1) US4420666A (en)
EP (1) EP0042131B1 (en)
JP (1) JPS5725626A (en)
DE (1) DE8016058U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140622A (en) * 1983-05-10 1984-11-28 Adco Ind Components A keyboard assembly

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62165619U (en) * 1986-04-11 1987-10-21
US5512721A (en) * 1993-09-28 1996-04-30 Unisurge, Inc. Autoclavable electrical switch assembly for use with a medical device and medical device using the same
US7056043B2 (en) * 2004-02-26 2006-06-06 Research In Motion Limited Keyboard for a mobile device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1190066B (en) * 1963-01-30 1965-04-01 Telefunken Patent Push or slide key assembly
DE1547539A1 (en) * 1967-06-28 1970-07-23 Nordmende Control organ for setting or tuning means in electrical devices, preferably in electrical communication devices
AT356185B (en) * 1978-06-21 1980-04-10 Kapsch Telephon Telegraph PUSH BUTTON SELECTOR FOR TELEPHONE APPARATUS OR THE LIKE.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459862A (en) * 1949-01-25 Ten keylentry mechanism
US1337217A (en) * 1916-02-04 1920-04-20 Nat Carbon Co Inc Battery-switch
US4024368A (en) * 1975-10-02 1977-05-17 Litton Systems, Inc. Switch assembly having selective actuation sensitivity
JPS5817269Y2 (en) * 1976-05-20 1983-04-07 セイコーエプソン株式会社 Exterior structure of electronic clock with calculator
FR2355367A1 (en) * 1976-06-17 1978-01-13 Otis Elevator Co Passenger lift pushbutton system - has movable and surrounding fixed flange forming spherical dome
US4128889A (en) * 1976-06-28 1978-12-05 Hoshidenki-Seizo Kabushiki Kaisha Pen type electronic digital calculator
US4292510A (en) * 1978-03-28 1981-09-29 Manfred Hild Keyboard for a miniature calculator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1190066B (en) * 1963-01-30 1965-04-01 Telefunken Patent Push or slide key assembly
DE1547539A1 (en) * 1967-06-28 1970-07-23 Nordmende Control organ for setting or tuning means in electrical devices, preferably in electrical communication devices
AT356185B (en) * 1978-06-21 1980-04-10 Kapsch Telephon Telegraph PUSH BUTTON SELECTOR FOR TELEPHONE APPARATUS OR THE LIKE.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
O. RICHTER et al. "Bauelemente der Feinmechanik" 8. Auflage 1959,VEB VERLAG TECHNIK, Berlin Seiten 338, 339 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140622A (en) * 1983-05-10 1984-11-28 Adco Ind Components A keyboard assembly

Also Published As

Publication number Publication date
DE8016058U1 (en) 1980-09-25
US4420666A (en) 1983-12-13
EP0042131B1 (en) 1985-01-16
JPS5725626A (en) 1982-02-10

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