WO1987007759A1 - Clavier pour utilisation dans des conditions difficiles - Google Patents

Clavier pour utilisation dans des conditions difficiles Download PDF

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Publication number
WO1987007759A1
WO1987007759A1 PCT/CH1987/000062 CH8700062W WO8707759A1 WO 1987007759 A1 WO1987007759 A1 WO 1987007759A1 CH 8700062 W CH8700062 W CH 8700062W WO 8707759 A1 WO8707759 A1 WO 8707759A1
Authority
WO
WIPO (PCT)
Prior art keywords
keys
keyboard
arrangement
lower module
switching devices
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
PCT/CH1987/000062
Other languages
German (de)
English (en)
Inventor
Alain M. BEBIÉ
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.)
Bebie and Co
Original Assignee
Bebie and Co
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 Bebie and Co filed Critical Bebie and Co
Publication of WO1987007759A1 publication Critical patent/WO1987007759A1/fr
Anticipated expiration legal-status Critical
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
    • H01H13/702—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
    • H01H2221/00—Actuators
    • H01H2221/068—Actuators having a not operable condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H01H2223/004—Evacuation of penetrating liquid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/002—Linear coil spring combined with dome spring

Definitions

  • Keyboards are known in which key switches are arranged side by side so that the keys together form a keyboard field.
  • the disadvantage of this arrangement is that dirt can enter between the keys and become deposited underneath the keys, which over time can impair the function of the keyboard.
  • Another disadvantage of this arrangement is that such keyboards are impractical to clean because the keys give way to a cleaning downward when pressed.
  • keyboards are known, the surface of which is formed from a dense film or rubber-elastic mat.
  • This type of keyboard has the disadvantage that the surface is not formed from the usual keys but from a membrane or foil, which is not or is only accepted with difficulty in many applications on the market.
  • the aim of the invention is to design a keyboard with individual keys but without the disadvantages mentioned.
  • the goal is achieved according to the invention
  • the keyboard including a mechanism for fixing the keys in their rest position
  • the keyboard consisting of two easily detachable modules; an upper module which comprises the keys and a key guide arrangement and a lower module which comprises a carrier arrangement and the switching elements.
  • the lower module can be provided with a flexible membrane or film covering the switching elements, which together with the support arrangement or with a housing surrounding the whole can form a seal.
  • FIGS 1, 2, 3 and 4 show sections through parts of an arrangement according to the invention.
  • FIG. 1 shows a section of an exemplary embodiment with an upper module, which comprises the keys 15 and the key guide arrangement 16.
  • a flexible plunger 20 can be provided with a guide profile 19 and with a trailing spring 17 on each key.
  • the lower module comprises the carrier arrangement, 26 with the switching elements 25 and with a sealing membrane 18.
  • the spring 17 presses the plunger 20 against the switching arrangement 25 until it yields by its trapezoidal, elastic elastic return spring 22 and by yielding the flexible membrane 18 is activated.
  • the plunger 20 and the key guide arrangement 16 can be provided with openings 24 so that penetrating liquids can be measured across the membrane 18 again.
  • the combination of the spring-loaded plunger 20 with short-stroke switching arrangements 25 allows a comfortably long key travel with only slight deformation of the diaphragm 18.
  • the switching point can be determined in the course of the actuation path by coordinating the spring forces.
  • the spring elements 22 can be made of a rubber elastic Mat 23 be shaped. This mat can be designed to be leakproof overall, so that the sealing membrane 18 can be omitted.
  • FIG. 2 shows the two modules detached from one another.
  • FIG. 3 shows a detail of how the edge area can be designed.
  • the key guide arrangement is formed in the edge area to form a frame 27. Openings 28 can be provided in this frame 27, which enable liquids which have penetrated to be removed.
  • the carrier arrangement of the lower module is formed in this example by the housing parts 31 and 30 and by a printed circuit board 26.
  • the cover 18 is clamped in a sealing manner in its edge region 29 between the housing parts 31 and 30 of the lower module. For clear positioning of the mat 23, this can be provided with knobs 32 which snap into corresponding holes in the circuit board.
  • the housing part 31 can seal the lower module, but it can also be part of a larger unit, e.g. Be part of the housing of a machine control.
  • the upper module can be positioned and releasably fixed above the lower module, for example in the edge area by means of latching cams.
  • FIG. 4 shows a section of an exemplary embodiment of a mechanism for locking the keys.
  • a plate 33 is provided with recesses or holes so that the key guide part 34 of the key guide arrangement protrude through the plate and the plate can be freely moved down to position 35 and back again.
  • the plate 33 can be lowered or raised and locked in the upper position by means of a lever arranged in the edge region, so that the keys are fixed in their rest position.

Landscapes

  • Push-Button Switches (AREA)

Abstract

Le clavier comprend: un support inférieur sur lequel sont fixés des organes de commutation et une membrane flexible d'étanchéité disposée au-dessus des organes de commutation, un support supérieur avec des touches mobiles, disposées de façon à pouvoir agir sur les organes de commutation, un mécanisme apte à verrouiller les touches en position de repos et à les déverrouiller.
PCT/CH1987/000062 1986-06-02 1987-05-29 Clavier pour utilisation dans des conditions difficiles Ceased WO1987007759A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH221086 1986-06-02
CH2210/86-2 1986-08-19

Publications (1)

Publication Number Publication Date
WO1987007759A1 true WO1987007759A1 (fr) 1987-12-17

Family

ID=4228452

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1987/000062 Ceased WO1987007759A1 (fr) 1986-06-02 1987-05-29 Clavier pour utilisation dans des conditions difficiles

Country Status (1)

Country Link
WO (1) WO1987007759A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522773A1 (de) * 1995-06-27 1997-01-02 Fernsprech Und Signalbau Gmbh Tastatur
EP0810619A1 (fr) * 1996-05-28 1997-12-03 Haschkamp, Joachim, Dipl.-Ing. Interrupteur à bouton poussoir pour appareils ménagers
RU2152661C1 (ru) * 1995-02-21 2000-07-10 Пре-Верке Гмбх Унд Ко. Кг Клавиатура с защитной пленкой
NL1027160C2 (nl) * 2004-10-01 2006-04-04 Suzo Internat Nl B V Drukknopstelsel.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE689138A (fr) * 1966-10-31 1967-05-02
US3657492A (en) * 1970-09-25 1972-04-18 Sperry Rand Corp Keyboard apparatus with moisture proof membrane
US3909564A (en) * 1974-08-08 1975-09-30 Amp Inc Keyboard assembly with foldable printed circuit matrix switch array, and key actuator locking slide plate
GB2047966A (en) * 1979-04-19 1980-12-03 Zanussi A Spa Industrie Washing machine with safety device
FR2463974A1 (fr) * 1979-08-17 1981-02-27 Landis Gyr Clavier a touches resistant
EP0064615A2 (fr) * 1981-05-07 1982-11-17 International Standard Electric Corporation Equipement téléphonique avec clavier sélecteur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE689138A (fr) * 1966-10-31 1967-05-02
US3657492A (en) * 1970-09-25 1972-04-18 Sperry Rand Corp Keyboard apparatus with moisture proof membrane
US3909564A (en) * 1974-08-08 1975-09-30 Amp Inc Keyboard assembly with foldable printed circuit matrix switch array, and key actuator locking slide plate
GB2047966A (en) * 1979-04-19 1980-12-03 Zanussi A Spa Industrie Washing machine with safety device
FR2463974A1 (fr) * 1979-08-17 1981-02-27 Landis Gyr Clavier a touches resistant
EP0064615A2 (fr) * 1981-05-07 1982-11-17 International Standard Electric Corporation Equipement téléphonique avec clavier sélecteur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2152661C1 (ru) * 1995-02-21 2000-07-10 Пре-Верке Гмбх Унд Ко. Кг Клавиатура с защитной пленкой
DE19522773A1 (de) * 1995-06-27 1997-01-02 Fernsprech Und Signalbau Gmbh Tastatur
DE19522773C2 (de) * 1995-06-27 1998-01-29 Fernsprech Und Signalbau Gmbh Tastatur
EP0810619A1 (fr) * 1996-05-28 1997-12-03 Haschkamp, Joachim, Dipl.-Ing. Interrupteur à bouton poussoir pour appareils ménagers
NL1027160C2 (nl) * 2004-10-01 2006-04-04 Suzo Internat Nl B V Drukknopstelsel.

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