EP0577859A1 - Clavier - Google Patents

Clavier Download PDF

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Publication number
EP0577859A1
EP0577859A1 EP92111226A EP92111226A EP0577859A1 EP 0577859 A1 EP0577859 A1 EP 0577859A1 EP 92111226 A EP92111226 A EP 92111226A EP 92111226 A EP92111226 A EP 92111226A EP 0577859 A1 EP0577859 A1 EP 0577859A1
Authority
EP
European Patent Office
Prior art keywords
keyboard
buttons
sealing film
honeycomb body
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92111226A
Other languages
German (de)
English (en)
Other versions
EP0577859B1 (fr
Inventor
Helge Butte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP19920111226 priority Critical patent/EP0577859B1/fr
Priority to DE59202627T priority patent/DE59202627D1/de
Publication of EP0577859A1 publication Critical patent/EP0577859A1/fr
Application granted granted Critical
Publication of EP0577859B1 publication Critical patent/EP0577859B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • 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
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • 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 a keyboard that can be assembled from individual buttons that can be switched by pressing button caps and is protected against splashing water, in particular for machine tool and robot controls the buttons are arranged on a circuit board and the key caps are mounted in a keyboard field.
  • the object of the invention is to design a keyboard of the type mentioned at the outset in such a way that the requirements for rough industrial use can be met in the simplest possible way.
  • this object is achieved in that the buttons laterally framing honeycomb bodies are placed between the circuit board and the keyboard field and that an elastic sealing film can also be stretched between one honeycomb body and keyboard field for several to all buttons.
  • the function of this sealing film can best be compared to that of an eardrum that protects all the buttons arranged in the honeycomb bodies from environmental influences and that realizes the restoring force for the actual button caps due to its mechanical tension.
  • the sealing film is transparent and thus releases an optical path, it is possible to transmit optical signals from the inside of the keyboard to the outside or vice versa.
  • light guide bodies are arranged at the light exits. With the help of these light guide bodies, a defined radiation behavior of the light can be easily realized.
  • honeycomb body can be assembled modularly from individual, frame-shaped individual honeycombs, different types of keyboards can be realized relatively easily. Furthermore, tolerance compensation, which is desired, for example, in the case of unplanned printed circuit boards or front plates, is made possible by lateral displacement of the individual honeycombs.
  • the illustration shows, in the form of an exploded drawing, sections of a printed circuit board LP on which a key T can be placed, the connection contacts of which, which are not visible in the illustration, grip through bushings D and then disappear with the conductor arrangement of the printed circuit board LP are.
  • the key T is pressed by depressing a plunger ST, which is symbolically indicated in the illustration by a cylinder body.
  • the button T seated directly on the circuit board LP in the assembled state is surrounded by a frame R, which can be part of a honeycomb structure made up of several frames, so that this frame R also rests directly on the circuit board LP.
  • the frame R is also supported against a front panel FP, a sealing film DF being clamped between the front panel FP and the frame R with fastening means, not shown, for the sake of clarity.
  • the sealing film DF now stretches over the frame R in the manner of an eardrum such that the plunger ST has not yet been actuated. It is only when the sealing film DF is pressed down in the direction of the plunger ST that a switching process is triggered. This depressing takes place with the aid of a tactile cap TK, which is mounted in a recess A of the front panel FP. A reset force for the keycap TK is ensured by means of the sealing film DF.
  • the process for actuating the key T then proceeds as follows: the push-button cap TK held in its starting position by the sealing film DF is moved towards the plunger against the pressure of the so-called eardrum, the plunger ST releases the contact of a contact of the key T off and when the operator reduces the pressure on the tactile cap TK, this is first reset to its initial position via the tappet restoring force and then via the restoring force of the sealing film DF.
  • the sealing film DF thus has a dual function. It seals the electrical elements of the keyboard against environmental influences and it realizes the restoring force for the probe caps. At this point it should be pointed out again that in the exemplary embodiment only a single key of a keyboard is shown. Of course, many keys can be arranged next to each other in a matrix, so to speak, and are only covered by a single sealing film if necessary.
  • the push-button caps for example the push-button cap TK
  • the push-button caps have a form fit that can be overcome from the front with respect to the recess A of the front panel FP.
  • This can be designed, for example, so that notches R1 and R2 of the tactile cap TK are provided with notches E (visible with notch R1), so that the notches R1 and R2 can be deformed by means of a tool under lateral pressure in order to cancel the latching effect.
  • the tactile cap TK can then be removed from the recess A.
  • R light-emitting diodes e.g. the light-emitting diode LED
  • the sealing film DF is transparent, lead to an optical signal to the keyboard surface via openings in the front panel FP.
  • Additional light guide bodies LL can be provided in the front panel FP for the defined guidance of the light exit.

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
EP19920111226 1992-07-02 1992-07-02 Clavier Expired - Lifetime EP0577859B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19920111226 EP0577859B1 (fr) 1992-07-02 1992-07-02 Clavier
DE59202627T DE59202627D1 (de) 1992-07-02 1992-07-02 Tastatur.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19920111226 EP0577859B1 (fr) 1992-07-02 1992-07-02 Clavier

Publications (2)

Publication Number Publication Date
EP0577859A1 true EP0577859A1 (fr) 1994-01-12
EP0577859B1 EP0577859B1 (fr) 1995-06-21

Family

ID=8209769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920111226 Expired - Lifetime EP0577859B1 (fr) 1992-07-02 1992-07-02 Clavier

Country Status (2)

Country Link
EP (1) EP0577859B1 (fr)
DE (1) DE59202627D1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046524A (en) * 1979-02-28 1980-11-12 Invader Keyboards Ltd Improvements relating to electric switches
DE3407937A1 (de) * 1984-03-03 1985-09-12 Debeg GmbH, 2000 Hamburg Geraeteeingabetastatur mit mechanisch betaetigbaren, fuehlbaren betaetigungselementen
FR2562286A1 (fr) * 1984-03-28 1985-10-04 Telemecanique Electrique Clavier a touches
EP0181130A2 (fr) * 1984-11-01 1986-05-14 Nec Corporation Structure d'interrupteurs à boutons-poussoirs pour appareil téléphonique ou appareils semblables
DE3602245A1 (de) * 1986-01-25 1987-08-13 Bosch Gmbh Robert Nachrichtentechnisches geraet mit einem quaderfoermigen gehaeuse
EP0335838A2 (fr) * 1988-03-29 1989-10-04 TSCHUDIN & HEID AG Equipement avec un support et au moins un dispositif électrique de commutation présentant un élément piézoélectrique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046524A (en) * 1979-02-28 1980-11-12 Invader Keyboards Ltd Improvements relating to electric switches
DE3407937A1 (de) * 1984-03-03 1985-09-12 Debeg GmbH, 2000 Hamburg Geraeteeingabetastatur mit mechanisch betaetigbaren, fuehlbaren betaetigungselementen
FR2562286A1 (fr) * 1984-03-28 1985-10-04 Telemecanique Electrique Clavier a touches
EP0181130A2 (fr) * 1984-11-01 1986-05-14 Nec Corporation Structure d'interrupteurs à boutons-poussoirs pour appareil téléphonique ou appareils semblables
DE3602245A1 (de) * 1986-01-25 1987-08-13 Bosch Gmbh Robert Nachrichtentechnisches geraet mit einem quaderfoermigen gehaeuse
EP0335838A2 (fr) * 1988-03-29 1989-10-04 TSCHUDIN & HEID AG Equipement avec un support et au moins un dispositif électrique de commutation présentant un élément piézoélectrique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 207 (E-758)16. Mai 1989 & JP-A-10 24 329 ( TOSHIBA ) 26. Januar 1989 *

Also Published As

Publication number Publication date
DE59202627D1 (de) 1995-07-27
EP0577859B1 (fr) 1995-06-21

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