EP0186708A1 - Flache tastatur - Google Patents

Flache tastatur Download PDF

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Publication number
EP0186708A1
EP0186708A1 EP85902663A EP85902663A EP0186708A1 EP 0186708 A1 EP0186708 A1 EP 0186708A1 EP 85902663 A EP85902663 A EP 85902663A EP 85902663 A EP85902663 A EP 85902663A EP 0186708 A1 EP0186708 A1 EP 0186708A1
Authority
EP
European Patent Office
Prior art keywords
keyboard
flat
surface sheet
keyboard assembly
smooth
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Withdrawn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
EP85902663A
Other languages
English (en)
French (fr)
Other versions
EP0186708A4 (de
Inventor
Michiya Inoue
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
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 Fanuc Corp filed Critical Fanuc Corp
Publication of EP0186708A1 publication Critical patent/EP0186708A1/de
Publication of EP0186708A4 publication Critical patent/EP0186708A4/de
Withdrawn legal-status Critical Current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
    • H01H13/70—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
    • H01H2209/00—Layers
    • H01H2209/016—Protection layer, e.g. for legend, anti-scratch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/01—Mounting on appliance
    • H01H2223/024—Screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/034—Bezel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/034—Positioning of layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/062—Maintenance or repair facilities

Definitions

  • This invention relates to a flat keyboard and, more particularly, to a flat keyboard used in an operator's panel of a numerical control unit, an input unit of a computer, an input unit of an electronic weigher and the like.
  • Figs. 4 and 5 illustrate an example of a conventionally used flat keyboard.
  • Fig. 4 is a sectional view taken along line IV-IV of Fig. 5, and
  • Fig. 5 is a plan view.
  • the structure of the conventionally used flat keyboard will now be described based on Figs. 4 and 5.
  • numeral 1 denotes a printed board on which wiring is formed by a printing method.
  • Numeral 2 denotes a reed switch a plurality whereof are arranged on the printed board.
  • Numeral 4 denotes a key a plurality of which oppose and overlie respective ones of the plural reed switches 2. Fixed to the bottom surface of each key is a magnet 3 for turning the reed switch 2 on and off.
  • the key 4 is urged upwardly by a spring or the like, not shown, so that the magnet 3 fixed to the bottom surface ordinarily is spaced away from the reed switch 2. By pressing the key, the magnet 3 is made to approach the reed switch 2.
  • Numeral 5 denotes a guide plate of key 4. The central portion of the guide plate is so formed as to project upwardly and is equipped with a guide hole 51a into which the crown portion of the key is fitted, thus constructing a guide portion 51. The peripheral portion 52 thereof is attached to the printed board 1 via a spacer 10.
  • Numeral 7 denotes a surface sheet covering the surface of the guide plate 5 and keys 4 and fixed to the overall surface of the guide plate 5 as by an adhesive.
  • the above-described printed board 1, read switches 2, keys 4, magnets 3, guide plate 5, spacer 10 and surface sheet 7 construct a keyboard assembly.
  • This keyboard assembly is mounted on a decorative panel 6, which has an opening 6a, from the inner side thereof (the lower side in Fig. 4) and is attached to the back side of the decorative panel 6 with the guide portion 51 being fitted into the opening 6a.
  • the surface sheet 7 Since the surface sheet 7 is affixed to the guide plate 5 as by an adhesive, it is difficult to position the surface sheet. In particular, if a large number of keys are provided, affixing the surface sheet in such a manner that the sheet accurately coincides with the keys is a very difficult operation. In addition, there is the possibility that the surface sheet 7 will be damaged. How to readily position the surface sheet and improve positioning accuracy when the sheet is replaced are problems to be solved.
  • the present invention has been devised to solve the foregoing problems of the above-described conventionally employed flat keyboard and its object is to provide a flat keyboard in which the surface sheet covering the surface of the keyboard assembly can be readily positioned and accurately affixed.
  • a flat keyboard having a decorative panel equipped with an opening, a keyboard assembly arranged opposite the opening and attached to the back side of the decorative panel, a detachable surface sheet covering the surface of the keyboard assembly and the outer side surface of the decorative panel at the opening, positioning means provided on a peripheral portion of the surface sheet and corresponding to the keyboard assembly, and fixing means for detachably fixing the surface sheet to the decorative panel.
  • the flat keyboard according to the present invention is constructed as described above and the surface sheet is provided at its peripheral portion with the positioning means located at a position corresponding to the keyboard assembly, the surface sheet can be easily and accurately positioned when affixing the same. In addition, assembly and replacement operations can be greatly facilitated.
  • Figs. 1 and 2 illustrate an embodiment of a flat keyboard according to the present invention, in which Fig. 1 is a sectional view along line I-I of Fig. 2 and Fig. 2 is a plan view, Fig. 3 is a sectional view illustrating another embodiment of a flat keyboard according to the present invention, and Figs. 4 and 5 illustrate a conventionally used flat keyboard, in which Fig. 4 is a sectional view taken along line IV-IV of Fig. 5 and Fig. 5 is a plan view.
  • FIGs. 1 and 2 illustrate an embodiment of a flat keyboard according to the present invention, in which Fig. 1 is a sectional view along line I-I of Fig. 2 and Fig. 2 is a plan view. Parts identical with those of the conventional flat keyboard shown in Figs. 4 and 5 are designated by like characters.
  • numeral 1 denotes a printed board on which wiring is'formed by printing.
  • Numeral 2 denotes a reed switch arranged on the printed board 1.
  • Numeral 4 denotes a key arranged to oppose and overlie the reed switch 2 and having a magnet 3 fixed to its bottom surface.
  • Numeral 5 denotes a guide plate comprising a guide portion 51 having a guide hole 5la into which the crown portion of the key 4 is fitted, a peripheral mounting portion 52, and a connection portion 53 connecting the peripheral mounting portion 52 and guide portion 51.
  • Numeral 10 denotes a spacer interposed between the guide plate 5 and printed board 1 for securing the two as by an adhesive.
  • a keyboard assembly 100 is constructed by assembling these members and is substantially the same as that shown in Figs. 4 and 5. For this reason, a detailed description thereof will be deleted.
  • the peripheral portion 52 of the guide plate 5 constituting the keyboard assembly 100 is provided with a plurality of implanted positioning pins 11.
  • the keyboard assembly 100 thus constructed is attached to the decorative plate 6 by fitting the guide portion 51 of guide plate 5 into an opening 6a, which is formed in the decorative plate 6, from the inner side (the lower side in Fig. 1), and is positioned by inserting the positioning pins 11 into plural positioning holes 6b provided in the decorative plate 6 at the portion thereof surrounding the opening 6a.
  • a surface sheet 70 covering the surface of the keyboard assembly 100 is formed to be larger than the opening 6a formed in decorative panel 6 and the peripheral portion thereof is provided with positioning holes 12 at positions corresponding to the positioning pins.
  • the surface sheet 70 is attached from the outer side (the upper side in Fig. 1) of the decorative plate 6 to which the keyboard assembly 100 is attached and the positioning holes 12 are fitted on the positioning pins, whereby the surface sheet can be easily and accurately mounted at a predetermined, prescribed position.
  • the surface sheet 70 attached to the surface of keyboard assembly 100 and decorative panel 6 is fixed by the decorative frame 8 arranged on the upper side of the peripheral portion.
  • the surface sheet 70 is clamped and secured by the decorative panel 6 and the decorative frame 8, which is attached to the decorative panel 6 by screws 9. It should be noted that the degree to which the surface sheet 70 follows up manipulation of the keys 4 can be improved by constructing the surface sheet of an elastic material such as rubber.
  • the flat keyboard according to the present embodiment is constructed as set forth above.
  • the positioning holes 12 provided in the peripheral portion are fitted on the positioning pins 12 implanted in the peripheral portion of the guide plate 5 constituting the keyboard assembly 100, thereby positioning the surface sheet accurately and with facility.
  • Fig. 3 illustrates another embodiment of a flat keyboard according to the present invention, in which parts identical with those shown in Figs. 1 and 2 are designated by like reference characters and are not described again.
  • the flat keyboard according to this embodiment includes a plurality of projections 14 provided on the peripheral portion of a surface sheet 71 on the back side thereof.
  • the projections 14 are inserted into the postioning holes 13 provided in the decorative plate 6, whereby the surface sheet 71 can be positioned and attached accurately and with facility.
  • the positioning pins lla implanted in the guide plate 5 constituting the keyboard assembly 100 are formed to have a length that will allow the pins to penetrate half way into positioning holes 13 provided in the decorative plate 6.
  • a flat keyboard according to the present invention enables the surface sheet covering the surface of the keyboard assembly to be positioned easily and accurately. Accordingly, the flat keyboard is well-suited particularly for use on the operator's panel of a numerical control unit for a machine tool, where the surface sheet is likely to be damaged by scraps from cutting or the like and is therefore frequently replaced.
  • the keyboard can also be used on an input unit of a computer or electronic weigher.

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
EP19850902663 1984-06-06 1985-06-04 Flache tastatur. Withdrawn EP0186708A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8387584U JPS60194828U (ja) 1984-06-06 1984-06-06 フラツトキ−ボ−ド
JP83875/84U 1984-06-06

Publications (2)

Publication Number Publication Date
EP0186708A1 true EP0186708A1 (de) 1986-07-09
EP0186708A4 EP0186708A4 (de) 1988-07-14

Family

ID=13814828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850902663 Withdrawn EP0186708A4 (de) 1984-06-06 1985-06-04 Flache tastatur.

Country Status (3)

Country Link
EP (1) EP0186708A4 (de)
JP (1) JPS60194828U (de)
WO (1) WO1985005732A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2294158A (en) * 1994-10-14 1996-04-17 Peter Stefan Jones Switch assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591749A (en) * 1969-05-12 1971-07-06 Singer Co Printed circuit keyboard
US4421966A (en) * 1982-07-26 1983-12-20 Kb Denver, Inc. Keyboard elastomeric cover with buttons having changeable legends

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3317698A (en) * 1966-03-11 1967-05-02 Nichols Engineering Inc Switch including sealing and shielding means therefor
JPS474466U (de) * 1971-02-05 1972-09-11
JPS5444647U (de) * 1977-09-02 1979-03-27

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591749A (en) * 1969-05-12 1971-07-06 Singer Co Printed circuit keyboard
US4421966A (en) * 1982-07-26 1983-12-20 Kb Denver, Inc. Keyboard elastomeric cover with buttons having changeable legends

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 19, no. 2, July 1976, pages 405-406, New York, US; G.G. PROMIS et al.: "Control panel" *
See also references of WO8505732A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2294158A (en) * 1994-10-14 1996-04-17 Peter Stefan Jones Switch assembly

Also Published As

Publication number Publication date
EP0186708A4 (de) 1988-07-14
JPS60194828U (ja) 1985-12-25
WO1985005732A1 (en) 1985-12-19

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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

17P Request for examination filed

Effective date: 19851219

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

A4 Supplementary search report drawn up and despatched

Effective date: 19880714

17Q First examination report despatched

Effective date: 19900530

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

18D Application deemed to be withdrawn

Effective date: 19930105

RIN1 Information on inventor provided before grant (corrected)

Inventor name: INOUE, MICHIYA