EP0461283A1 - Elément de touche pour clavier - Google Patents

Elément de touche pour clavier Download PDF

Info

Publication number
EP0461283A1
EP0461283A1 EP90111136A EP90111136A EP0461283A1 EP 0461283 A1 EP0461283 A1 EP 0461283A1 EP 90111136 A EP90111136 A EP 90111136A EP 90111136 A EP90111136 A EP 90111136A EP 0461283 A1 EP0461283 A1 EP 0461283A1
Authority
EP
European Patent Office
Prior art keywords
key
pressure
keyboard
element according
key 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.)
Withdrawn
Application number
EP90111136A
Other languages
German (de)
English (en)
Inventor
Frank Cämmerer
Bernd Matthies
Ilse Messing
Norbert Gebert
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.)
ROBOTRON OPTIMA GmbH
Original Assignee
ROBOTRON OPTIMA 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 ROBOTRON OPTIMA GmbH filed Critical ROBOTRON OPTIMA GmbH
Priority to EP90111136A priority Critical patent/EP0461283A1/fr
Publication of EP0461283A1 publication Critical patent/EP0461283A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • 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
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/02—After travel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/058—Actuators to avoid tilting or skewing of contact area or actuator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/062—Damping vibrations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/064—Limitation of actuating pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/09—Actuating striker on actuator part
    • H01H2233/094—Snap coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/09—Actuating striker on actuator part
    • H01H2233/106—Inserting

Definitions

  • the invention relates to a key element for a key field of an electronic keyboard with a plurality of keys arranged side by side.
  • Keyboards for inputting information into a storage and / or processing unit have long been known which consist of a keypad with keys arranged in rows and columns and associated switches which are queried cyclically. Since the button buttons have a label corresponding to their function, they are arranged in a position that prevents them from rotating. This is largely done by a constructive design of the tappet guide, for example by a rectangular or square cross section of the tappet guide or several tappet guides. The individual key buttons are also square, so that within a key field the key buttons essentially cover the entire surface of the key field. In the case of such key fields, the key tappets of the individual keys must necessarily have a certain play in relation to the tappet guides in order to ensure the desired displaceability of the individual key tappets.
  • spring-elastic elements are used to actuate contact foils in membrane keyboards.
  • Spring elements ensure safe switching, whereby the maximum force acting on the contact point is limited, regardless of the force acting on the button.
  • Compression springs as the actuating element have the disadvantage, however, that the end of the turn or the end face of the spring presses directly on the upper switching film and thus results in a considerable mechanical load on the switching film, which has a disadvantageous effect on the service life of the switching film.
  • strip modules made of silicone rubber with domes, which extend over a row of keys are used as actuating elements for contact foils.
  • the disadvantage here is that the properties of the keyboard or the row of keys depend on the properties of the individual domes, which are subject to the natural signs of fatigue of the plastics used and can only be replaced as a whole.
  • noise reduction is achieved primarily by the fact that foam or rubber mats are arranged between the lower (when the contact is actuated) and the upper (key rest position) stop, or that the switching mat used in the keyboard partially takes over the damping ( EP 0091284).
  • a disadvantage of such solutions is that they are difficult to assemble and complex and do not ensure complete damping.
  • the aim of the invention is to eliminate the disadvantages of the prior art and to implement a solution with the least technical effort.
  • the invention has for its object to develop a key element that dampens bouncing noises in the end positions of the key, which with simple means achieves a compulsory alignment of several keys of a key field arranged next to one another and which, regardless of the key pressure force when actuated, has an approximately constant contact pressure force on the switching level causes.
  • an elastic pressure piece which is connected by means of a snap element to the button above the key tappets and has a pressure element which is resiliently connected to the outer ring of the pressure piece via a membrane.
  • the pressure element switches the associated contacts of the switching level, for example a switching foil, the stroke of the key being limited by the outer ring of the pressure element upwards and downwards through stops.
  • the pressure piece consists of a soft elastic material, such as rubber, so that the impact noises are greatly reduced.
  • a return spring presses with its parallel end faces against at least one contact surface of the key button inclined to the key guide and is advantageously arranged off-center in order to support the structurally predetermined direction of the aligning key buttons.
  • the particular advantage for increasing the service life is that the contact pressure force of the pressure element on the switching level when pressing a key is approximately constant regardless of the key pressure force.
  • the reduction of the impact noise is achieved without additional means, such as upholstery or insulating mats.
  • the advantages according to the invention are achieved with the least technical effort.
  • the key element according to Figure 1 consists of the button 1 with its molded key tappets 2, which are non-positively and positively connected with an elastic pressure piece 3, a guide part 4 for guiding the key tappet 2, a pressure element 3.1, which is resilient by means of a membrane 3.4 is arranged on the pressure piece 3 and the switching film 7 to be actuated.
  • the button 1 When the button 1 is pressed from the basic position against the action of the return spring 5, the pressure piece 3 moves towards the switching film 7.
  • the pressure element 3.1 hits the switching film 7, presses the switching film 7 together and switches the contact.
  • the key movement is only limited when the outer ring of the pressure piece 3 strikes the switching foil 7 with its boundary surface 3.2 (FIG. 2).
  • the pressure piece 3 consists of a soft elastomer material and thus dampens the stop noises on the switching film 7 and the stop 4.1 of the guide part 4. Due to the necessary play in the key elements, precautions are taken so that the key elements align with one another in their rest position.
  • 3 shows a key element, the guide part 4 of which has a web 4.2 for the upper stop of the pressure element 3, into which the pressure element 3 with key button 1 and key tappet 2 tilts slightly and can thus assume a defined position in the upper rest position.
  • This alignment process is supported by an oblique contact surface 6 in the button 1, against which the parallel end faces of the return spring 5 press and additionally cause a tilting moment for the button unit 1, 2, 3.
  • the return spring 5 is arranged off-center and thus shows a further variant for an advantageous alignment of the button buttons.

Landscapes

  • Input From Keyboards Or The Like (AREA)
EP90111136A 1990-06-13 1990-06-13 Elément de touche pour clavier Withdrawn EP0461283A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90111136A EP0461283A1 (fr) 1990-06-13 1990-06-13 Elément de touche pour clavier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90111136A EP0461283A1 (fr) 1990-06-13 1990-06-13 Elément de touche pour clavier

Publications (1)

Publication Number Publication Date
EP0461283A1 true EP0461283A1 (fr) 1991-12-18

Family

ID=8204089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111136A Withdrawn EP0461283A1 (fr) 1990-06-13 1990-06-13 Elément de touche pour clavier

Country Status (1)

Country Link
EP (1) EP0461283A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1460665A2 (fr) * 2003-03-18 2004-09-22 Matsushita Electric Industrial Co., Ltd. Appareil électronique et bouton poussoir associé
WO2013098389A1 (fr) * 2011-12-30 2013-07-04 Arcelik Anonim Sirketi Appareil électroménager
DE102013205580A1 (de) * 2013-03-28 2014-10-02 Zf Friedrichshafen Ag Tastenstößel für ein Tastenmodul einer Taste für eine Tastatur, Tastenmodul einer Taste für eine Tastatur und Verfahren zum Herstellen eines Tastenmoduls für eine Taste für eine Tastatur
DE102013110064A1 (de) * 2013-09-12 2015-03-26 Gmk Electronic Design Gmbh Tastenmodul und Aufsteckelement für ein Tastenmodul
CN105940475A (zh) * 2014-01-30 2016-09-14 株式会社电装 操作部件以及操作部件的操作部制造方法
EP3598469A1 (fr) * 2018-07-18 2020-01-22 VIMERCATI S.p.A. Interrupteur a bouton-poussoir pour tableaux de bord de véhicules

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2347722A1 (de) * 1972-01-26 1974-03-28 Canon Kk Druckknopfschalter
US3961147A (en) * 1974-04-10 1976-06-01 Teletype Corporation Keying contact assembly
DE3325491A1 (de) * 1983-06-03 1984-12-06 Cherry Mikroschalter Gmbh, 8572 Auerbach Tastenfeld
US4631378A (en) * 1983-10-31 1986-12-23 Jelco. Co., Ltd. Push button switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2347722A1 (de) * 1972-01-26 1974-03-28 Canon Kk Druckknopfschalter
US3961147A (en) * 1974-04-10 1976-06-01 Teletype Corporation Keying contact assembly
DE3325491A1 (de) * 1983-06-03 1984-12-06 Cherry Mikroschalter Gmbh, 8572 Auerbach Tastenfeld
US4631378A (en) * 1983-10-31 1986-12-23 Jelco. Co., Ltd. Push button switch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN. vol. 13, no. 7, Dezember 1970, NEW YORK US Seite 1755 G.L. LARVIS: "PUSH BUTTON ACTUATOR" *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1460665A2 (fr) * 2003-03-18 2004-09-22 Matsushita Electric Industrial Co., Ltd. Appareil électronique et bouton poussoir associé
EP1460665A3 (fr) * 2003-03-18 2006-05-10 Matsushita Electric Industrial Co., Ltd. Appareil électronique et bouton poussoir associé
WO2013098389A1 (fr) * 2011-12-30 2013-07-04 Arcelik Anonim Sirketi Appareil électroménager
DE102013205580A1 (de) * 2013-03-28 2014-10-02 Zf Friedrichshafen Ag Tastenstößel für ein Tastenmodul einer Taste für eine Tastatur, Tastenmodul einer Taste für eine Tastatur und Verfahren zum Herstellen eines Tastenmoduls für eine Taste für eine Tastatur
US10249454B2 (en) 2013-03-28 2019-04-02 Zf Friedrichshafen Ag Key stem for a key module of a key for a keyboard, key module of a key for a keyboard, and method for manufacturing a key module for a key for a keyboard
DE102013110064A1 (de) * 2013-09-12 2015-03-26 Gmk Electronic Design Gmbh Tastenmodul und Aufsteckelement für ein Tastenmodul
US9941067B2 (en) 2013-09-12 2018-04-10 Gmk Electronic Design Gmbh Key module and slip-on element for a key module
DE102013110064B4 (de) 2013-09-12 2018-07-05 Gmk Electronic Design Gmbh Aufsteckelement für ein Tastenmodul
CN105940475A (zh) * 2014-01-30 2016-09-14 株式会社电装 操作部件以及操作部件的操作部制造方法
EP3598469A1 (fr) * 2018-07-18 2020-01-22 VIMERCATI S.p.A. Interrupteur a bouton-poussoir pour tableaux de bord de véhicules

Similar Documents

Publication Publication Date Title
DE2106732C3 (de) Elektrische Membran-Tastatur
DE3543751A1 (de) Druckknopfschalter
DE2306268A1 (de) Tastatur
DE2247905A1 (de) Tastschalteranordnung
DE3423707A1 (de) Schaltvorrichtung
EP0461283A1 (fr) Elément de touche pour clavier
DE2902357C2 (de) Mehrere Tastschalter aufweisendes Tastenfeld
DE1765920A1 (de) Kontaktanordnung fuer elektrische Schaltgeraete
EP1298692B1 (fr) Dispositif de contact pour un disjoncteur basse tension
DE2439697A1 (de) Druckschalter
DE2101197A1 (de) Elektrischer Schnappschalter
DE3301058A1 (de) Flach profilierter tastenfeld-schalter
DE2246714A1 (de) Schalttaste mit einer schnappmechanik
EP0544124B1 (fr) Clavier à boutons-poussoirs en matière synthétique, en particulier pour appareils terminaux de communication
DE2257983A1 (de) Drucktastenschalter
EP0614204B1 (fr) Calotte d'interrupteur pour bouton-poussoir
DE2536736C2 (de) Tastatur zur Datenübermittlung
DE4126042A1 (de) Elektrischer schalter
WO2005034016A1 (fr) Connecteur de carte a puce a tiroir etanche
DE2452944B2 (de) Tastenschaltersystem
DD282309B5 (de) Einrichtung zum Ausrichten der Tastenknoepfe eines Tastenfeldes
EP0498161B1 (fr) Interrupteur à bouton-poussoir flexible
DD282309A5 (de) Einrichtung zum Ausrichten der Tastenköpfe eines Tastenfeldes
DE3829881C2 (fr)
DE2805597A1 (de) Drucktastenschalter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

17Q First examination report despatched

Effective date: 19921210

18D Application deemed to be withdrawn

Effective date: 19920619