ES2065360T3 - SHEET KEYBOARD. - Google Patents

SHEET KEYBOARD.

Info

Publication number
ES2065360T3
ES2065360T3 ES89118053T ES89118053T ES2065360T3 ES 2065360 T3 ES2065360 T3 ES 2065360T3 ES 89118053 T ES89118053 T ES 89118053T ES 89118053 T ES89118053 T ES 89118053T ES 2065360 T3 ES2065360 T3 ES 2065360T3
Authority
ES
Spain
Prior art keywords
piezo
elements
keyboard
front plate
contact surface
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
ES89118053T
Other languages
Spanish (es)
Inventor
Gert Dipl-Ing Miller
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.)
Scheidt and Bachmann GmbH
Original Assignee
Scheidt and Bachmann 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 Scheidt and Bachmann GmbH filed Critical Scheidt and Bachmann GmbH
Application granted granted Critical
Publication of ES2065360T3 publication Critical patent/ES2065360T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/02—Piezo element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/016—Separate bridge contact
    • H01H2205/024—Means to facilitate positioning
    • H01H2205/028—Protuberances on substrate

Landscapes

  • Push-Button Switches (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Saccharide Compounds (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

The invention relates to a layered keyboard having a multiplicity of disc-shaped piezo-elements (6) which are arranged behind a front plate (1), provided with key symbols (1a), between two flexible layers (2 and 4) which are provided with a contact surface (2a and 4a) for each piezo element (6), which contact surface is connected by means of a conductor track (2b, 4b) to a keyboard plug connector, and having a rigid supporting plate (7), which supports the layers (2 and 4) and the front plate (1) for absorbing the bending forces exerted as a result of the pressure stress of the front plate (1) in the region of the key symbols (1a) onto the piezo-elements (6). In order to create a layered keyboard which is cost-effective and can be produced in a simple manner with the necessary precision, one of the flexible layers (2 or 4) is provided with rings (5) surrounding the piezo-elements (6), whose axial thickness corresponds approximately to the disc thickness of the piezo-elements (6). <IMAGE>
ES89118053T 1989-09-29 1989-09-29 SHEET KEYBOARD. Expired - Lifetime ES2065360T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89118053A EP0419717B1 (en) 1989-09-29 1989-09-29 Layered keyboard

Publications (1)

Publication Number Publication Date
ES2065360T3 true ES2065360T3 (en) 1995-02-16

Family

ID=8201949

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89118053T Expired - Lifetime ES2065360T3 (en) 1989-09-29 1989-09-29 SHEET KEYBOARD.

Country Status (4)

Country Link
EP (1) EP0419717B1 (en)
AT (1) ATE113752T1 (en)
DE (1) DE58908605D1 (en)
ES (1) ES2065360T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043578B4 (en) * 2004-07-12 2007-11-08 Diehl Ako Stiftung & Co. Kg Control panel for an electrical device and method for making a control panel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8313473U1 (en) * 1983-05-06 1986-10-02 Wilhelm Ruf Kg, 8000 Muenchen Keypad
FR2576726B1 (en) * 1985-01-29 1993-02-19 Samokine Georges TOUCH CONTROL KEYBOARD
CH667763A5 (en) * 1985-07-23 1988-10-31 Schenk & Co FILM KEYBOARD.

Also Published As

Publication number Publication date
EP0419717A1 (en) 1991-04-03
EP0419717B1 (en) 1994-11-02
DE58908605D1 (en) 1994-12-08
ATE113752T1 (en) 1994-11-15

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