EP0185768A1 - Flache tastatur - Google Patents

Flache tastatur Download PDF

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Publication number
EP0185768A1
EP0185768A1 EP85902662A EP85902662A EP0185768A1 EP 0185768 A1 EP0185768 A1 EP 0185768A1 EP 85902662 A EP85902662 A EP 85902662A EP 85902662 A EP85902662 A EP 85902662A EP 0185768 A1 EP0185768 A1 EP 0185768A1
Authority
EP
European Patent Office
Prior art keywords
surface sheet
keyboard
decorative panel
smooth flat
flat keyboard
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
EP85902662A
Other languages
English (en)
French (fr)
Other versions
EP0185768A4 (de
Inventor
Hiroomi Fukuyama
Michiya Inoue
Kazuyuki Sasaki
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 EP0185768A1 publication Critical patent/EP0185768A1/de
Publication of EP0185768A4 publication Critical patent/EP0185768A4/de
Ceased 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
    • 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
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/062—Maintenance or repair facilities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/016—Control panel; Graphic display; Programme control

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. 5 and 6 illustrate an example of a conventionally used flat keyboard.
  • Fig. 5 is a sectional view taken along line IV-IV of Fig. 6, and
  • Fig. 6 is a plan view.
  • 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 5la 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. 5) 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 of the flat keyboard is required to be replaced. This is especially so with a flat keyboard used as the operator's panel of a numerically controlled machine tool.
  • the surface sheet 7 may be defaced or damaged by scraps produced during cutting and is required to be replaced when this occurs.
  • the conventional flat keyboard has the surface sheet 7 attached to the peripheral portion 52 of the guide plate as by an adhesive so that the surface sheet is sandwiched between the decorative panel 6 and peripheral portion 52. Accordingly, when the surface sheet is replaced, first the keyboard assembly is detached from the inner side of the decorative panel 6, after which the surface sheet 7 must be detached from the guide plate 5. These detaching operations are very troublesome and require an exorbitant amount of time.
  • 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 exchanged, and which exhibits an excellent seal against water, dust and the like.
  • 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, and a detachable decorative frame arranged on a peripheral portion of the surface sheet for clamping the surface sheet between itself and the decorative panel.
  • the surface sheet can be exchanged merely by detaching the decorative frame from the outer side. Consequently, exchanging the surface sheet can be performed very easily in comparison with the prior art, in which surface sheet exchange is not possible unless the keyboard assembly is removed from the decorative panel. Further; since the flat keyboard according to the present invention is constructed in such a manner that the peripheral portion of the surface sheet covering the surface of the keyboard assembly and the surface of the decorative panel is clamped by the decorative frame and the decorative panel, the flat keyboard has an excellent seal which prevents oil, water, dust and the like from invading the interior of the keyboard assembly. Therefore, according to the present invention, a flat keyboard can be obtained having excellent waterproof and dustproof properties as well as outstanding durability and reliability.
  • 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, Fig. 4 is a sectional view illustrating yet another embodiment of a flat keyboard according to the present inventon, and Figs. 5 and 6 illustrate a conventionally used flat keyboard, in which Fig. 5 is a sectional view taken along line IV-IV of Fig. 6 and Fig. 6 is a plan view.
  • FIGs. 1 and 2 illustrate 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. 5 and 6 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 is bottom surface.
  • Numeral 5 denotes a guide plate comprising a guide portion 51 having a guide hole 51a 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. 5 and 6. For this reason, a detailed description thereof will be deleted.
  • the keyboard assembly 100 is attached to the decorative panel 6 with the guide portion 51 of guide plate 5 being fitted into an opening 6a, which is formed in the decorative panel 6, from the inner side (the lower side in Fig. 1).
  • a surface sheet 70 covering the surface of the keyboard assembly 100 is attached from the outer side (the upper side in Fig. 1) of the decorative panel 6. More specifically, the surface sheet 70 is formed to be larger than the opening 6a formed in decorative panel 6 and is arranged with its peripheral portion 70a overlapping the surface of the decorative panel 6 on the outer side 6b of opening 6a.
  • the surface sheet 70 disposed on the surface of keyboard assembly 100 and on the surface of the decorative panel 6 is fixed by the decorative frame 8 arranged on the upper side of the peripheral portion 70a.
  • the surface sheet 70 is clamped and secured to the decorative panel 6 by 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 screw 9 is loosened and the decorative frame 8 is removed, thereby enabling the surface sheet 70 to be removed with ease.
  • a new surface sheet 70 is placed on the keyboard assembly 100 and decorative panel 6 in the above-described manner, the decorative frame 8 is placed on the peripheral portion 70a of the surface sheet 70, and the decorative frame 8 is securely fastened to the decorative panel 6 by the screw 9, thereby completing the operation for exchanging the surface sheet 70.
  • the flat keyboard according to the present invention can have its surface sheet 70 exchanged merely by detaching the decorative frame 8 from the outer side, replacement of the suurface sheet is much easier and the operation requires much less time in comparison with the conventional flat keyboard, in which replacement of the surface sheet 70 cannot be performed unless the keyboard assembly is detached from the decorative panel 6.
  • the flat keyboard of the present embodiment is so arranged that the peripheral portion 70a of the surface sheet 70 covering the keyboard assembly 100 and the surface of the decorative panel 6 is clamped by the decorative frame 8 and decorative panel 6. Accordingly, the flay keyboard has an excellent seal which prevents oil, water, dust and the like from invading the interior of the keyboard assembly.
  • a flat keyboard can be obtained having excellent waterproof and dustproof properties as well as outstanding durability and reliability.
  • 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 adhesive means disposed on the back side (the under surface in the Figure) of a surface sheet 71 comprising a flexible material.
  • a double-sided adhesive tape, bonding agent or the like may serve as the adhesive means.
  • the flat keyboard of this embodiment can be installed with ease and positional displacement can be prevented.
  • the waterproof and dustproof properites are improved even further.
  • Fig. 4 illustrates yet another embodiment of a flat keyboard according to the present invention, in which parts identical with those shown in Figs. 1, 2 and 3 are designated by like reference characters and are not described again.
  • the flat keyboard according to this embodiment has a packing 12 made of an elastic material such as rubber arranged between a surface sheet 72 and a decorative frame 8.
  • the packing comprising an elastic material is thus arranged between the surface sheet 72 and decorative frame 8, the seal can be greatly improved even if a non-flexible sheet of polyester or the like is used as the surface sheet.
  • the flat keyboard obtained has excellent waterproof and dustproof properties.
  • a flat keyboard according to the present invention enables the surface sheet covering the surface of the keyboard assembly to be exchanged very easily and exhibits excellent waterproof and dustproof properties. Accordingly, the flat keyboard is well-suited 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, or where large quantities of oil are used for cutting.
  • 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)
EP19850902662 1984-06-06 1985-06-04 Flache tastatur. Ceased EP0185768A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8387484U JPS60194827U (ja) 1984-06-06 1984-06-06 フラツトキ−ボ−ド
JP83874/84U 1984-06-06

Publications (2)

Publication Number Publication Date
EP0185768A1 true EP0185768A1 (de) 1986-07-02
EP0185768A4 EP0185768A4 (de) 1988-07-14

Family

ID=13814801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850902662 Ceased EP0185768A4 (de) 1984-06-06 1985-06-04 Flache tastatur.

Country Status (3)

Country Link
EP (1) EP0185768A4 (de)
JP (1) JPS60194827U (de)
WO (1) WO1985005731A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315910A2 (de) * 1987-11-09 1989-05-17 Tektronix Inc. Abgedichtete Tastatur für Rechnerendstelle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0754656B2 (ja) * 1992-05-15 1995-06-07 帝国通信工業株式会社 押釦スイッチのキートップの製造方法
US5578843A (en) * 1994-10-06 1996-11-26 Kavlico Corporation Semiconductor sensor with a fusion bonded flexible structure
DE19708064B4 (de) * 1997-02-28 2007-01-25 Siemens Ag Bedieneinrichtung
JP3419388B2 (ja) * 2000-07-17 2003-06-23 日本電気株式会社 操作キーを備えた電子機器およびその製造方法
JP5322473B2 (ja) * 2007-03-30 2013-10-23 富士通コンポーネント株式会社 キーボード
CN105127923A (zh) * 2015-09-17 2015-12-09 杨晓方 一种环保设备专用夹具

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1936079A1 (de) * 1968-07-18 1970-01-22 Alois Plangger Kreiskolbenmaschine
FR2152115A5 (de) * 1971-09-06 1973-04-20 Olivetti & Co Spa

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184574A (en) * 1962-02-26 1965-05-18 Cutler Hammer Inc Electric switch including housing and contact retaining means
JPS474466U (de) * 1971-02-05 1972-09-11
JPS60130013A (ja) * 1983-12-16 1985-07-11 松下電器産業株式会社 キ−ボ−ドスイツチ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1936079A1 (de) * 1968-07-18 1970-01-22 Alois Plangger Kreiskolbenmaschine
FR2152115A5 (de) * 1971-09-06 1973-04-20 Olivetti & Co Spa

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
COMPUTER DESIGN, vol. 15, no. 2, February 1976, page 46; "Environmental seal protects keyboard mechanism and circuitry" *
See also references of WO8505731A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315910A2 (de) * 1987-11-09 1989-05-17 Tektronix Inc. Abgedichtete Tastatur für Rechnerendstelle
EP0315910A3 (de) * 1987-11-09 1990-08-29 Tektronix Inc. Abgedichtete Tastatur für Rechnerendstelle

Also Published As

Publication number Publication date
EP0185768A4 (de) 1988-07-14
JPS60194827U (ja) 1985-12-25
WO1985005731A1 (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: 19851216

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 HAS BEEN REFUSED

18R Application refused

Effective date: 19921015

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SASAKI, KAZUYUKI

Inventor name: FUKUYAMA, HIROOMI

Inventor name: INOUE, MICHIYA