EP0407754B1 - Keyboard - Google Patents

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Publication number
EP0407754B1
EP0407754B1 EP90111268A EP90111268A EP0407754B1 EP 0407754 B1 EP0407754 B1 EP 0407754B1 EP 90111268 A EP90111268 A EP 90111268A EP 90111268 A EP90111268 A EP 90111268A EP 0407754 B1 EP0407754 B1 EP 0407754B1
Authority
EP
European Patent Office
Prior art keywords
key
key set
carrier
disposed
guide strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90111268A
Other languages
German (de)
French (fr)
Other versions
EP0407754A3 (en
EP0407754A2 (en
Inventor
Gerhard Grundig Emv Elektro-Mechanische Krauss
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.)
Offta Pubco Licza Uso Non Esclusivo Offta Lice
Original Assignee
Grundig Emv Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend Stiftung & Co Kg
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
Application filed by Grundig Emv Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend Stiftung & Co Kg, Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig Emv Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend Stiftung & Co Kg
Publication of EP0407754A2 publication Critical patent/EP0407754A2/en
Publication of EP0407754A3 publication Critical patent/EP0407754A3/en
Application granted granted Critical
Publication of EP0407754B1 publication Critical patent/EP0407754B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/036Return force
    • H01H2221/044Elastic part on actuator or casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00Key modules
    • H01H2233/002Key modules joined to form button rows
    • H01H2233/004One molded part

Definitions

  • the invention relates to a set of buttons for actuating the contact of an electronic device, in particular a video recorder, the set of buttons consisting of a plurality of individual buttons which are made in one piece from plastic and connected to the device housing or to the device chassis by means of a carrier, and the buttons preferably via a contact plunger on individual Apply pressure switches arranged in series on a pressure plate.
  • key sets which have a closed structure and are used as a complete key set on a device chassis or in a device housing. Although these key sets are of universal use, they are complex and not sufficiently flexible with regard to the design of the key button shape. Furthermore, key sets are known, the individual parts of which are assembled into a key set only when the device is being assembled. Here, the device housing preferably takes over the leadership of the button.
  • a push button arrangement in which several push buttons molded in one piece from plastic are used.
  • the individual push buttons consist of a button and a contact plunger extending in the extension of the button.
  • the end of the contact plunger presses on contacts which are arranged on a printed circuit board perpendicular to the longitudinal axis of the pushbuttons.
  • Each push button is connected by two webs to a connection carrier which has holes for fastening the entire set of buttons to the push button arrangement or the housing.
  • a push button When a push button is pressed, it describes a circular path and thus tilts to its longitudinal axis in the unactuated state.
  • the pushbuttons must therefore be designed conically, otherwise touching and possible friction with the button guide can occur while they are being pressed down. Due to the conicity of the pushbuttons, the guidance of the buttons when pressed is no longer guaranteed.
  • the object of the invention is therefore to provide a simple set of buttons in the device, which consists of a few parts and is to be installed in the device as automatically as possible, the key guidance of the individual key buttons being largely independent of the guidance provided by the key cutout in the housing.
  • FIG. 1 The simplified drawing of FIG. 1 essentially shows a button set 1 in section, which is inserted in a housing 2 of an electronic device.
  • the key set here consists of several keys arranged in a row, only one key 3 being shown enlarged in the figure shown.
  • the individual key itself has a key button 4, which is extended by a contact plunger 5.
  • a short guide bar 6 is attached parallel to the contact plunger.
  • Each key is connected to a carrier 8 via a web 7 which is inclined at approximately 45 ° -60 ° to the key actuation line - in the example shown approximately 55 °. It is essential here that the web 7 on both connection sides made of plastic with all other key parts integrally molded film hinges 9 and 9 '.
  • the key 3 is connected to the housing 2 via the carrier 8.
  • a pressure plate 10 is inserted perpendicular to the direction of actuation of the button 3 in the housing 2 and held by this.
  • a contact plunger is assigned in series and in each case on the pressure plate, at least one pressure switch 11 is attached and soldered to the pressure plate.
  • the button 3 If the button 3 is now pressed, the position of the film hinges 9, 9 'give the button an almost vertical movement in the direction of the pressure switch 11, and the button can move smoothly relative to the cutout provided in the housing 2.
  • the individual button to distinguish different device functions that can be operated via the respective button can have a different key width.
  • the button is preferably connected to the carrier 8 by two webs 7 arranged in parallel.

Landscapes

  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

A key set is described, for making contact with an electronic apparatus, for example a video recorder. The special feature of this key set, which may have one or more keys (3), is that it is produced integrally as a plastic injection-moulded part with all the individual elements such as the key (3), the contact plunger (5), the web (7), the hinges (9, 9') and the support (8). The key set (1) is connected by means of the support (8) to an apparatus housing (2) or apparatus chassis such that the push button switches (11) which are arranged on a printed-circuit board (10) mounted in the apparatus can be operated by means of the contact plunger (5). The key set is furthermore designed such that it can be mounted in the apparatus with the minimum labour cost, for example automatically. <IMAGE>

Description

Die Erfindung betrifft einen Tastensatz zur Kontaktbetätigung eines elektronischen Gerätes, insbesondere eines Videorecorders, wobei der Tastensatz aus mehreren Einzeltasten besteht, die einstückig aus Kunststoff gefertigt und über einen Träger verbunden am Gerätegehäuse oder am Gerätechassis befestigt sind, und die Tasten vorzugsweise über einen Kontaktstössel auf einzelne in Reihe auf einer Druckplatte angeordnete Druckschalter einwirken.The invention relates to a set of buttons for actuating the contact of an electronic device, in particular a video recorder, the set of buttons consisting of a plurality of individual buttons which are made in one piece from plastic and connected to the device housing or to the device chassis by means of a carrier, and the buttons preferably via a contact plunger on individual Apply pressure switches arranged in series on a pressure plate.

Es sind zahlreiche Tastensätze bekannt, die einen geschlossenen Aufbau aufweisen und als kompletter Tastensatz auf ein Gerätechassis oder in ein Gerätegehäuse eingesetzt sind. Diese Tastensätze sind zwar von universeller Verwendbarkeit, jedoch aufwendig und bezüglich der Gestaltung der Tastenknopfform nicht ausreichend flexibel. Weiterhin sind Tastensätze bekannt, deren Einzelteile erst während der Gerätemontage zu einem Tastensatz zusammengesetzt werden. Hierbei übernimmt vorzugsweise das Gerätegehäuse die Führung des Tastenknopfes.Numerous key sets are known which have a closed structure and are used as a complete key set on a device chassis or in a device housing. Although these key sets are of universal use, they are complex and not sufficiently flexible with regard to the design of the key button shape. Furthermore, key sets are known, the individual parts of which are assembled into a key set only when the device is being assembled. Here, the device housing preferably takes over the leadership of the button.

Nachteilig ist bei einem derartigen Aufbau eines Tastensatzes, daß die Führung des Tastknopfes aufwendig ist oder die Betätigung der einzelnen Tastenknöpfe eines Tastensatzes einen unterschiedlichen Tastendruck erfordern.It is disadvantageous in such a structure of a key set that the operation of the key button is complex or the actuation of the individual key buttons of a key set require a different key press.

Aus GB-A-2072584 ist eine Drucktastenanordnung bekannt, bei der mehrere einstückig aus Kunststoff gespritzte Drucktasten eingesetzt werden. Die einzelnen Drucktasten bestehen aus einem Tastenknopf und einem in der Verlängerung des Tastenknopfes sich erstreckenden Kontaktstößel. Bei Niederdrücken der Drucktasten drückt das Ende der Kontaktstößel auf Kontakte, die auf einer senkrecht zur Längsachse der Drucktasten liegenden Leiterplatte angeordnet sind. Jede Drucktaste ist durch zwei Stege mit einem Verbindungsträger verbunden, der Löcher zur Befestigung des gesamten Tastensatzes an der Drucktastenanordnung oder dem Gehäuse aufweist. Beim Drücken einer Drucktaste beschreibt diese einen kreisförmigen Weg und neigt sich somit zu ihrer Längsachse im unbetätigten Zustand. Die Drucktasten müssen deshalb konisch ausgeführt werden, da sonst während ihres Niederdrückens eine Berührung und eventuelle Reibung mit der Tastenführung erfolgen kann. Bedingt durch die Konizität der Drucktasten ist die Führung der Tasten im gedrückten Zustand nicht mehr einwandfrei gewährleistet.From GB-A-2072584 a push button arrangement is known, in which several push buttons molded in one piece from plastic are used. The individual push buttons consist of a button and a contact plunger extending in the extension of the button. When the pushbuttons are depressed, the end of the contact plunger presses on contacts which are arranged on a printed circuit board perpendicular to the longitudinal axis of the pushbuttons. Each push button is connected by two webs to a connection carrier which has holes for fastening the entire set of buttons to the push button arrangement or the housing. When a push button is pressed, it describes a circular path and thus tilts to its longitudinal axis in the unactuated state. The pushbuttons must therefore be designed conically, otherwise touching and possible friction with the button guide can occur while they are being pressed down. Due to the conicity of the pushbuttons, the guidance of the buttons when pressed is no longer guaranteed.

Aufgabe der Erfindung ist es daher, einen einfachen im Gerät aufgebauten Tastensatz zu schaffen, der aus wenigen Teilen besteht und möglichst automatisch im Gerät zu montieren ist, wobei die Tastenführung der einzelnen Tastenknöpfe weitgehend unabhängig von der Führung durch den Tastenausschnitt im Gehäuse gewährleistet ist.The object of the invention is therefore to provide a simple set of buttons in the device, which consists of a few parts and is to be installed in the device as automatically as possible, the key guidance of the individual key buttons being largely independent of the guidance provided by the key cutout in the housing.

Zur Lösung der Aufgabe werden erfindungsgemäß die im kennzeichnenden Teil des Ansprüchs 1 angegebenen Maßnahmen vorgeschlagen.To achieve the object, the measures specified in the characterizing part of claim 1 are proposed according to the invention.

Ein Ausführungsbeispiel wird nachfolgend anhand der Zeichnungen näher erläutert.

Fig. 1
ist eine Darstellung eines in einem Gerätegehäuse eingesetzten Tastensatzes, wobei nur eine Taste gezeichnet ist,
Fig. 2
ist eine Draufsicht auf einen Kunststoffträger eines Tastensatzes, an den die einzelnen Tasten angehängt sind.
An embodiment is explained below with reference to the drawings.
Fig. 1
is an illustration of a key set used in a device housing, only one key being drawn,
Fig. 2
is a plan view of a plastic carrier of a key set to which the individual keys are attached.

Die vereinfacht dargestellte Zeichnung der Fig. 1 zeigt im wesentlichen einen Tastensatz 1 im Schnitt, der in einem Gehäuse 2 eines elektronischen Gerätes eingesetzt ist. Der Tastensatz besteht hierbei aus mehreren aneinander gereihten Tasten, wobei in der dargestellten Figur nur eine Taste 3 vergrößert gezeichnet ist. Die einzelne Taste selbst weist einen Tastenknopf 4 auf, an den sich verlängernd ein Kontaktstössel 5 anschließt. Parallel zum Kontaktstössel ist eine kurze Führungsleiste 6 angebracht. Jede Taste ist über einen unter ca. 45°-60° zur Tastenbetätigungslinie - im dargestellten Beispiel ca. 55° - geneigten Steg 7 mit einem Träger 8 verbunden. Wesentlich ist hierbei, daß der Steg 7 an beiden Anbindungsseiten aus Kunststoff mit allen übrigen Tastenteilen einstückig gespritzte Filmscharniere 9 und 9′ aufweist. Über den Träger 8 ist die Taste 3 mit dem Gehäuse 2 verbunden. Senkrecht zur Betätigungsrichtung der Taste 3 ist im Gehäuse 2 und von diesem gehalten, eine Druckplatte 10 eingesetzt. Auf der Druckplatte ist in Reihe und jeweils einem Kontaktstössel zugeordnet, wenigstens ein Druckschalter 11 aufgesetzt und mit der Druckplatte verlötet.The simplified drawing of FIG. 1 essentially shows a button set 1 in section, which is inserted in a housing 2 of an electronic device. The key set here consists of several keys arranged in a row, only one key 3 being shown enlarged in the figure shown. The individual key itself has a key button 4, which is extended by a contact plunger 5. A short guide bar 6 is attached parallel to the contact plunger. Each key is connected to a carrier 8 via a web 7 which is inclined at approximately 45 ° -60 ° to the key actuation line - in the example shown approximately 55 °. It is essential here that the web 7 on both connection sides made of plastic with all other key parts integrally molded film hinges 9 and 9 '. The key 3 is connected to the housing 2 via the carrier 8. A pressure plate 10 is inserted perpendicular to the direction of actuation of the button 3 in the housing 2 and held by this. A contact plunger is assigned in series and in each case on the pressure plate, at least one pressure switch 11 is attached and soldered to the pressure plate.

Wird nun die Taste 3 betätigt, so verleihen die Lage der Filmscharniere 9, 9′ der Taste eine nahezu senkrechte Bewegung in Richtung des Druckschalters 11, und der Tastenknopf kann sich gegenüber dem vorgesehenen Ausschnitt im Gehäuse 2 reibungsfrei bewegen.If the button 3 is now pressed, the position of the film hinges 9, 9 'give the button an almost vertical movement in the direction of the pressure switch 11, and the button can move smoothly relative to the cutout provided in the housing 2.

Aus der Fig. 2 ist ferner zu ersehen, daß der einzelne Tastenknopf zur Unterscheidung verschiedener Gerätefunktionen, die über den jeweiligen Tastenknopf betätigt werden können, eine unterschiedliche Tastenbreite aufweisen kann. Weiterhin ist der Tastenknopf vorzugsweise von zwei parallel angeordneten Stegen 7 mit dem Träger 8 verbunden.From Fig. 2 it can also be seen that the individual button to distinguish different device functions that can be operated via the respective button can have a different key width. Furthermore, the button is preferably connected to the carrier 8 by two webs 7 arranged in parallel.

Claims (3)

  1. Key set for the contact actuation of an electronic appliance, in particular a video recorder, in which the key set comprises a plurality of individual keys (3) which are integrally made of plastic and are connected to the appliance housing (2) or to the appliance chassis by means of a carrier (8), and the keys act on individual pressure switches (11) disposed in a row on a printed circuit board (10) preferably by means of a contact plunger and each key (3) comprises a keytop (4) and a contact plunger (5) extending in line with the keytop, characterized in that a guide strip (6) disposed essentially in parallel with the longitudinal axis of the contact plunger (5) is present and each key is connected via the guide strip to the carrier (8) by at least one bridge (7) disposed at approximately 45° - 60° to the direction of key actuation, and in that the bridge has, at both attachment ends, a film-type hinge (9, 9′) concomitantly moulded from plastic.
  2. Key set according to Claim 1, characterized in that the thin region of the hinge (9, 9′) at the attachment point extends in longitudinally stretched form to the guide strip between bridge (7) and guide strip (6) and the hinge region is disposed in line with the carrier with respect to the attachment point of the carrier.
  3. Key set according to Claims 1 and 2, characterized in that two bridges disposed in parallel are responsible for the attachment by means of the film-type hinges between guide strip and carrier.
EP90111268A 1989-07-11 1990-06-15 Keyboard Expired - Lifetime EP0407754B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8908429U 1989-07-11
DE8908429U DE8908429U1 (en) 1989-07-11 1989-07-11 Keyset

Publications (3)

Publication Number Publication Date
EP0407754A2 EP0407754A2 (en) 1991-01-16
EP0407754A3 EP0407754A3 (en) 1991-10-23
EP0407754B1 true EP0407754B1 (en) 1994-09-28

Family

ID=6840970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111268A Expired - Lifetime EP0407754B1 (en) 1989-07-11 1990-06-15 Keyboard

Country Status (3)

Country Link
EP (1) EP0407754B1 (en)
AT (1) ATE112412T1 (en)
DE (2) DE8908429U1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9011181U1 (en) * 1990-07-30 1990-10-04 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth Swing-out control unit
DE9207290U1 (en) * 1992-05-29 1992-07-16 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth Push button unit with snap hook arrangement in the push button opening area
DE29701148U1 (en) * 1997-01-23 1997-04-17 Bosch-Siemens Hausgeräte GmbH, 81669 München Push button
DE19739575C2 (en) * 1997-09-10 2003-10-16 Aeg Hausgeraete Gmbh Function block, in particular key block, for the control surface of a device and control surface of a device with such a function block
KR19990018549U (en) * 1997-11-12 1999-06-05 전주범 Cushion pad of control panel for car audio
ATE412969T1 (en) * 2000-07-05 2008-11-15 Niko CONTACT ACTUATOR
DE10349592B4 (en) * 2003-03-05 2009-06-25 Electrolux Home Products Corp. N.V. Keypad for insertion into a panel and mounting arrangement of a keypad on a panel
DE10309516B3 (en) * 2003-03-05 2004-11-25 Electrolux Home Products Corporation N.V. Control button block incorporated in operating panel for domestic appliance e.g. cooking hob or baking oven, has return spring for each button cover guided via elastomer frame attached to operating panel
DE10309515B3 (en) * 2003-03-05 2005-02-03 Electrolux Home Products Corporation N.V. Push-button block for glass control panel of domestic cooking appliance, has spring element between each push-button cap and guide frame providing resetting force for push-button cap and operating element
DE102008038567B4 (en) 2008-08-20 2018-08-16 Leopold Kostal Gmbh & Co. Kg Arrangement of interconnected actuators for pushbuttons or pressure switches
DE102008038568B4 (en) * 2008-08-20 2017-07-20 Leopold Kostal Gmbh & Co. Kg Arrangement of several actuators for pushbuttons or pressure switches, as well as device with such an arrangement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4163883A (en) * 1977-12-30 1979-08-07 Texas Instruments Incorporated Keyboard with illuminated keys
US4315114A (en) * 1980-03-24 1982-02-09 International Telephone And Telegraph Corporation Keyboard switch assembly
DE3041186C2 (en) * 1980-09-13 1984-03-29 Philips Patentverwaltung Gmbh, 2000 Hamburg Pushbutton arrangement in an electrical communications engineering device
DE3607689A1 (en) * 1986-03-08 1987-09-17 Telefonbau & Normalzeit Gmbh Push button of relatively large width
DE8714217U1 (en) * 1987-10-26 1987-12-23 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt Keycap for a keyboard

Also Published As

Publication number Publication date
ATE112412T1 (en) 1994-10-15
DE8908429U1 (en) 1989-08-24
DE59007311D1 (en) 1994-11-03
EP0407754A3 (en) 1991-10-23
EP0407754A2 (en) 1991-01-16

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