DE3426922A1 - Push-button switch - Google Patents

Push-button switch

Info

Publication number
DE3426922A1
DE3426922A1 DE19843426922 DE3426922A DE3426922A1 DE 3426922 A1 DE3426922 A1 DE 3426922A1 DE 19843426922 DE19843426922 DE 19843426922 DE 3426922 A DE3426922 A DE 3426922A DE 3426922 A1 DE3426922 A1 DE 3426922A1
Authority
DE
Germany
Prior art keywords
key
key button
push button
button
switching element
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.)
Ceased
Application number
DE19843426922
Other languages
German (de)
Inventor
Gerhard Reuning
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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
Priority claimed from DE19843407573 external-priority patent/DE3407573A1/en
Application filed by Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Priority to DE19843426922 priority Critical patent/DE3426922A1/en
Publication of DE3426922A1 publication Critical patent/DE3426922A1/en
Ceased legal-status Critical Current

Links

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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/807—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 characterised by the contacts or the contact sites characterised by the spatial arrangement of the contact sites, e.g. superimposed sites
    • 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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H01H25/04—Operating part movable angularly in more than one plane, e.g. joystick
    • H01H25/041—Operating part movable angularly in more than one plane, e.g. joystick having a generally flat operating member depressible at different locations to operate different controls
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/024—Profile on actuator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/012—Joy stick type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/056—Modular conception
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/068—Actuators having a not operable condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/01—Different switch sites under one actuator in same plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/036—Radio; TV
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2237/00—Mechanism between key and laykey
    • H01H2237/006—Guided plunger or ball
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/026—Internal encoding, e.g. validity bit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/03—Avoiding erroneous switching

Landscapes

  • Push-Button Switches (AREA)

Abstract

A push-button switch is described which consists essentially of a key button and a switching element having a plurality of contact points, and in which the key button has a specific number of control areas. The control areas allow the push-button switch to switch, for example, eight or nine or more different functions using only one key button. In order to prevent incorrect control operations, the contact points allocated to the control areas can be electrically linked in a specific manner. The allocation of the apparatus switching function to a specific control area takes place via an evaluation circuit.

Description

D R U C K T A S T E N S C H A L T E R D R U C K T A S T E N S C H A L T E R

BESCHREIBUNG Die Erfindung betrifft einen Drucktastenschalter für elektrische Nachrichtengeräte nach Patentanmeldung P 34 07 573, insbesondere für Rundfunk- und Fernsehgeräte, bestehend aus einem Tastenknopf und einem Schaltelement, z. B. einem Mehrfach-Folienschaltelement, wobei der Tastenknopf vorzugsweise eine Rechteckform und mehrere Bedienfelder mit jeweils mindestens einer zugeordneten Kontaktstelle für unterschiedliche Schaltfunktionen aufweist und mit dem Schaltelement in einem Geräte-Gehäuseteil über alle Seiten taumelbar eingesetzt ist. DESCRIPTION The invention relates to a push button switch for electrical communications equipment according to patent application P 34 07 573, in particular for Radio and television sets, consisting of a key button and a switching element, z. B. a multiple membrane switching element, wherein the key button is preferably one Rectangular shape and several control panels, each with at least one assigned Has contact point for different switching functions and with the switching element is inserted in a device housing part such that it can be tilted over all sides.

Es sind Drucktastenschalter bekannt, deren Tastenknopf eine Reckteckform aufweist und die über die Seitenkanten des Tastenknopfes kippbar als Mehrfach-Tastenschalter ausgebildet sind. Nach der Patentanmeldung P 34 07 573 ist ein Drucktastenschalter mit nur einem Tastenknopf ausgeführt, der bis zu neun Bedienfelder aufweist. Der Tastenknopf ist bei diesem Drucktastenschalter über alle Seiten taumelbar gelagert. Jedem Bedienfeld ist wenigstens eine Kontaktstelle zugeordnet. Die im Bereich der einzelnen Bedienfelder sich beim Taumeln des Tastenknopfes ergebenden unterschiedlichen Bezugshöhen zu den zugeordneten Kontaktstellen dienen hierbei diesen als Schaltkriterium. Eine z. B. über ein Bedienfeld im Eckbereich einer Taste betätigte Kontaktstelle benötigt einen größeren Schalthub als ein im Mittelbereich einer Tasten-Längsseite angeordnetes Bedienfeld. Für den Benutzer von Geräten der geschilderten Art ist der unterschiedliche Tastenhub jedoch nicht wahrnehmbar, da die Hubdifferenz sehr klein ist. Nachteilig ist bei Geräten mit Drucktastenschalter, die acht und mehr Bedienfelder aufweisen, daß Fehlbedienungen möglich sind, sofern die Taste bei Betätigung über das jeweilige Bedienfeld nicht ausreichend auf Anschlag niedergedrückt wird.There are push button switches known, the key top has a rectangular shape and which can be tilted over the side edges of the key top as a multiple key switch are trained. According to the patent application P 34 07 573 is a push button switch carried out with just one button, which has up to nine control panels. Of the With this pushbutton switch, the key button is mounted such that it can be staggered over all sides. At least one contact point is assigned to each control panel. Those in the field of individual control panels result when the key button wobbles different Reference heights to the assigned contact points serve as a switching criterion. A z. B. via a control panel in the corner area of a button actuated contact point requires a larger switching stroke than one in the middle area of a key's long side arranged control panel. For the user of devices of the type described The difference in key travel, however, is not noticeable because the travel difference is very large is small. The disadvantage of devices with pushbutton switches is eight or more Control panels have that incorrect operations are possible, provided that the button is pressed is not sufficiently depressed to the stop via the respective control panel.

Aufgabe der Erfindung ist es daher, einen Drucktastenschalter für Rundfunk- und Fernsehgeräte so auszugestalten, daß dieser auch als Mehrfach-Drucktastenschalter mit einem Tastenknopf und mehreren Bedienfeldern ausgerüstet, eine sichere Geräte-Funktionsschaltung von allen Bedienfeldern aus gewährleistet, ohne daß bei ungenügender Tastenbetätigung eine Geräte-Fehlbedienung möglich ist.The object of the invention is therefore to provide a push button switch for Design radio and television equipment so that it can also be used as a multiple push button switch Equipped with a button and several control panels, a safe device function circuit guaranteed from all control panels, without the need for insufficient key actuation incorrect operation of the device is possible.

Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved according to the invention by the in the characterizing part of claim 1 specified features solved.

Weitere vorteilhafte Ausgestaltungen der Taste des Drucktastenschalters ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the button of the push button switch result from the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher beschrieben. Es zeigt Fig. 1 eine perspektivische Darstellung eines erfindungsgemäßen Drucktastenschalters mit einem Tastenknopf und acht eingesetzten Bedienfeldern, Fig. 2a, 2b, 2c eine schematische Draufsicht auf den Tastenknopf nach Figur 1 mit verschiedenen Beispielen zur elektrischen Schaltungsverknüpfung der einzelnen Kontaktstellen zu Dreiergruppen.An embodiment of the invention is shown in the drawings and is described in more detail below. 1 shows a perspective illustration a push button switch according to the invention with a key top and eight inserted Control panels, Fig. 2a, 2b, 2c a schematic plan view of the key button according to Figure 1 with various examples of electrical circuit linking of the individual contact points into groups of three.

In der Figur 1 ist ein Drucktastenschalter 1 gezeigt, der im wesentlichen aus einem Tastenknopf 2 und aus einem Schaltelement 3 besteht. Der dargestellte Tastenknopf weist beispielsweise acht Bedienfelder 4 auf.In the figure 1, a push button switch 1 is shown, which essentially consists of a key button 2 and a switching element 3. The one shown The key button has eight control panels 4, for example.

Bei neun Bedienfeldern ist mittig zum Tastenknopf noch ein weiteres in der Figur gestrichelt eingezeichnetes Bedienfeld vorgesehen. Der Tastenknopf und das Schaltelement sind in einem Geräte-Gehäuseteil 5 eingesetzt.With nine control panels there is another one in the middle of the button Control panel shown in dashed lines in the figure is provided. The key button and the switching element are inserted in a device housing part 5.

Im wesentlichen besteht der Tastenknopf 2 aus einer Deckplatte 6, die sich über mehrere Stützbeine 7 auf dem Schaltelement 3 abstützt. Das Schaltelement besteht aus einem in bekannter Weise zusammengesetzten Mehrfach-Folienschaltelement, wobei jedem Bedienfeld des Tastenknopfes mindestens eine elektrische Kontaktstelle 8 zugeordnet ist. Jede der Kontaktstellen 8 ist über je eine mit dem Tastenknopf verbundene federnde Schaltzunge 9 betätigbar. Durch die entsprechend federnde Lagerung des Tastenknopfes ist über das jeweils zugeordnete Bedienfeld jede Kontaktstelle für sich betätigbar. Die Bedienfelder weisen im angegebenen Beispiel kugelsegmentförmige Mulden auf. Bedarfsweise sind die Mulden zum Rand des Tastenknopfes hin offen und ergeben so eine langgestreckte Fingermulde.The key top 2 consists essentially of a cover plate 6, which is supported on the switching element 3 via several support legs 7. The switching element consists of a multiple membrane switching element assembled in a known manner, wherein each control panel of the key button has at least one electrical contact point 8 is assigned. Each of the contact points 8 is each one with the key button connected resilient switching tongue 9 can be actuated. Due to the correspondingly resilient mounting of the key button is each contact point via the assigned control panel can be operated by itself. In the example given, the control panels have the shape of a spherical segment Hollows on. If necessary, the troughs are open to the edge of the key button and result in an elongated finger recess.

Die Kontaktstellen 8 sind in einer bestimmten Kombinationsform elektrisch verknüpft. Die Verknüpfungsmöglichkeit ist mit einigen Beispielen in den Figuren 2a, 2b und 2c dargestellt. Zur Vereinfachung der Darstellung ist nur der Tastenknopf 2 mit acht Bedienfeldern gezeichnet. Da jedem Bedienfeld mindestens eine Kontaktstelle zugeordnet ist, ergibt sich für die zu einer Schaltgruppe verknüpften Kontaktstellen die gleiche Darstellung im Bedienfeld wie im darunterliegenden Schaltelement. Die jeweils einem Bedienfeld und somit einer bestimmten Schaltgruppe zugeordnete Geräte-Schaltfunktion ist durch Auswerten der Schaltgruppe in einer hierfür allgemein bekannten und daher nicht dargestellten Auswertschaltung vorgenommen. Nach den Figuren 2a bis 2c sind die Schaltgruppen aus drei Kontaktstellen gebildet. Die dem Bedienfeld jeweils zugeordnete Kontaktstelle wird zusätzlich bestimmt durch zwei benachbarte Bedienfelder bzw. Kontaktstellen. Über diese so verknüpften Dreiergruppen wird eine Geräte-Fehlbedienung vermieden.The contact points 8 are electrical in a certain combination form connected. The possibility of linking is with some examples in the figures 2a, 2b and 2c shown. To simplify the illustration, there is only the button button 2 drawn with eight control panels. Because each control panel has at least one contact point is assigned, results for the contact points linked to a switching group the same display in the control panel as in the switching element below. the Device switching function assigned to each control panel and thus a specific switching group is by evaluating the vector group in a generally known and therefore evaluation circuit not shown made. According to Figures 2a to 2c are the vector groups formed from three contact points. The one assigned to the control panel The contact point is also determined by two adjacent control panels or Contact points. A device operating error occurs via these groups of three linked in this way avoided.

In Figur 2a ist eine Dreiergruppe einer Schaltgruppe 10 in Form eines Dreieckverbundes 10a dargestellt, wobei das zu betätigende Bedienfeld mit einem Pfeil markiert ist.In Figure 2a is a group of three of a vector group 10 in the form of a Triangular composite 10a shown, the control panel to be operated with a Arrow is highlighted.

Die Figur 2b zeigt eine als senkrechter Verbund lOb angeordnete Schaltgruppe 10 mit in der Mitte (Pfeil) zu betätigendem Bedienfeld.FIG. 2b shows a vector group arranged as a vertical composite 10b 10 with a control panel in the middle (arrow).

Aus Figur 2c ist ein waagerecht angeordneter Verbund 10c einer Schaltgruppe zu erkennen. Die seitenvertauschten oder eckvertauschten Schaltgruppenanordnungen sind natürlich ebenfalls eindeutig durch die Auswertschaltung fixiert. Die Einteilung der Schaltgruppen kann jedoch in den verschiedensten unterscheidbaren geometrischen Figuren vorgenommen werden.FIG. 2c shows a horizontally arranged composite 10c of a switching group to recognize. The side-swapped or corner-swapped vector group arrangements are of course also clearly fixed by the evaluation circuit. The introduction the vector groups can, however, be in the most varied of distinguishable geometrical forms Figures are made.

Claims (4)

DRUCKTASTEN SCHALTER PATENTANSPRUCHE 1. Drucktastenschalter für elektrische Nachrichtengeräte nach P 34 07 573, insbesondere für Rundfunk- und Fernsehgeräte, bestehend aus einem Tastenknopf und einem Schaltelement, z. B. einem Mehrfach-Folienschaltelement, wobei der Tastenknopf vorzugsweise eine Rechteckform und mehrere Bedienfelder mit jeweils mindestens einer zugeordneten Kontaktstelle für unterschiedliche Schaltfunktionen aufweist und mit dem Schaltelement in einem Geräte-Gehäuseteil über alle Seiten taumelbar eingesetzt ist, d a d u r c h g e k e n n z e i c h n e t , daß jedem Bedienfeld (4) eine unterscheidbare Schaltgruppe (10) aus einer oder mehreren Kontaktstellen (8) benachbarter Bedienfelder (4) zugeordnet ist, daß beim Betätigen eines Bedienfeldes die betreffenden Kontaktstellen zur Bildung der zugeordneten Schaltgruppe elektrisch verknüpfbar sind, und daß die jeweils zugeordnete Schalt- funktion eines Bedienfeldes durch Auswerten der Schaltgruppe in einer Auswertschaltung erfolgt. PUSH BUTTON SWITCHES PATENT CLAIMS 1. Push button switches for electrical News devices according to P 34 07 573, in particular for radio and television sets, consisting of a key button and a switching element, e.g. B. a multiple foil switching element, the key button preferably having a rectangular shape and multiple control panels at least one assigned contact point for different switching functions has and with the switching element in a device housing part on all sides wobbly is used, d u r c h e k e n n n z e i c h n e t that everyone Control panel (4) a distinguishable switch group (10) from one or more contact points (8) adjacent control panels (4) is assigned that when you press a control panel the relevant contact points to form the associated vector group electrically can be linked, and that the respectively assigned switching function of a control panel by evaluating the switching group in an evaluation circuit. 2. Drucktastenschalter nach Anspruch 1, dadurch gekennzeichnet, daß der Tastenknopf (2) vorzugsweise acht oder neun Bedienfelder (4) aufweist, und daß die Bedienfelder als kugelsegmentförmige Mulden ausgebildet sind. 2. Push button switch according to claim 1, characterized in that the key button (2) preferably has eight or nine control panels (4), and that the control panels are designed as spherical segment-shaped depressions. 3. Drucktastenschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sich die kugelsegmentförmigen Mulden zum Rand des Tastenknopfes (2? hin fortsetzen. 3. Push button switch according to claim 1 or 2, characterized in that that the spherical segment-shaped recesses continue to the edge of the key button (2? 4. Drucktastenschalter nach einem der vorherigen Ansprüche, d a d u r c h g e k e n n -z e i c h n e t , daß der Tastenknopf gegenüber dem Geräte-Gehäuseteil (5) wenigstens um die Höhe des Tastenhubs erhaben ist. 4. Push button switch according to one of the preceding claims, d a d u r c h e k e n n -z e i c h n e t that the key button opposite the device housing part (5) is raised at least by the height of the key travel.
DE19843426922 1984-03-01 1984-07-21 Push-button switch Ceased DE3426922A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843426922 DE3426922A1 (en) 1984-03-01 1984-07-21 Push-button switch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843407573 DE3407573A1 (en) 1984-03-01 1984-03-01 PUSH BUTTON SWITCH
DE19843426922 DE3426922A1 (en) 1984-03-01 1984-07-21 Push-button switch

Publications (1)

Publication Number Publication Date
DE3426922A1 true DE3426922A1 (en) 1986-01-23

Family

ID=25818989

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843426922 Ceased DE3426922A1 (en) 1984-03-01 1984-07-21 Push-button switch

Country Status (1)

Country Link
DE (1) DE3426922A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135363A1 (en) * 1991-10-26 1993-04-29 Bayerische Motoren Werke Ag Joystick action control unit for car heating and air conditioning - uses logic circuitry to control sectors in car interior
EP1168396A2 (en) * 2000-06-26 2002-01-02 Nokia Mobile Phones Ltd. Tactile electromechanical data input mechanism
US6377239B1 (en) 1998-05-26 2002-04-23 Alps Electric Co., Ltd. Multidirectional input device
EP1310969A1 (en) * 2001-11-08 2003-05-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Mirror switch device
WO2004001782A1 (en) * 2002-06-24 2003-12-31 Voelckers Oliver Device for detecting a mechanical actuation of an input element by using digital technology, and method for processing and converting the digital input signal into commands for controlling a load

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928638A1 (en) * 1978-10-10 1980-04-24 Robotron Veb K Miniature keyboard for computer - has pushbutton head in guide and resetting device, fitted with several actuating protrusions over switching contacts on base plate
GB2087154A (en) * 1980-11-04 1982-05-19 Standard Telephones Cables Ltd Keypad button
DE3301156A1 (en) * 1983-01-13 1984-07-19 Dieter Wittchow Coordinate transmitter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928638A1 (en) * 1978-10-10 1980-04-24 Robotron Veb K Miniature keyboard for computer - has pushbutton head in guide and resetting device, fitted with several actuating protrusions over switching contacts on base plate
GB2087154A (en) * 1980-11-04 1982-05-19 Standard Telephones Cables Ltd Keypad button
DE3301156A1 (en) * 1983-01-13 1984-07-19 Dieter Wittchow Coordinate transmitter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135363A1 (en) * 1991-10-26 1993-04-29 Bayerische Motoren Werke Ag Joystick action control unit for car heating and air conditioning - uses logic circuitry to control sectors in car interior
DE4135363C2 (en) * 1991-10-26 2000-09-28 Bayerische Motoren Werke Ag Control unit for a vehicle heating / air conditioning system
US6377239B1 (en) 1998-05-26 2002-04-23 Alps Electric Co., Ltd. Multidirectional input device
DE19924012B4 (en) * 1998-05-26 2005-02-17 Alps Electric Co., Ltd. Multi-directional input device
EP1168396A2 (en) * 2000-06-26 2002-01-02 Nokia Mobile Phones Ltd. Tactile electromechanical data input mechanism
EP1168396A3 (en) * 2000-06-26 2004-01-02 Nokia Corporation Tactile electromechanical data input mechanism
EP1310969A1 (en) * 2001-11-08 2003-05-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Mirror switch device
WO2004001782A1 (en) * 2002-06-24 2003-12-31 Voelckers Oliver Device for detecting a mechanical actuation of an input element by using digital technology, and method for processing and converting the digital input signal into commands for controlling a load
US7534973B2 (en) 2002-06-24 2009-05-19 Oliver Voelckers Device for detecting a mechanical actuation of an input element by using digital technology, and method for processing and converting the digital input signal into commands for controlling a load

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