JPS5927940B2 - 小型電卓 - Google Patents

小型電卓

Info

Publication number
JPS5927940B2
JPS5927940B2 JP51110046A JP11004676A JPS5927940B2 JP S5927940 B2 JPS5927940 B2 JP S5927940B2 JP 51110046 A JP51110046 A JP 51110046A JP 11004676 A JP11004676 A JP 11004676A JP S5927940 B2 JPS5927940 B2 JP S5927940B2
Authority
JP
Japan
Prior art keywords
electrodes
calculator
conductive paint
small calculator
small
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
Application number
JP51110046A
Other languages
English (en)
Other versions
JPS5335451A (en
Inventor
修 平田
雄二 原田
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP51110046A priority Critical patent/JPS5927940B2/ja
Priority to US05/833,344 priority patent/US4180711A/en
Publication of JPS5335451A publication Critical patent/JPS5335451A/ja
Publication of JPS5927940B2 publication Critical patent/JPS5927940B2/ja
Expired 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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/785—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 characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • 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
    • H01H2201/022—Material
    • H01H2201/03—Composite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/026—Pressure contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/002—Screen printing
    • H01H2229/004—Conductive ink
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/002—Calculator, computer

Landscapes

  • Push-Button Switches (AREA)
  • Calculators And Similar Devices (AREA)
  • Input From Keyboards Or The Like (AREA)

Description

【発明の詳細な説明】 本発明は電子式卓上計算機（電卓）の構造に関し特に薄
型で簡易な構造の電卓に関するものである。
例えば特開昭５１−３０４３３等に見られる技術におい
ては、プラスチック製のケースに一対の電極及び配線導
体を設け、これを上から可動電極が橋絡接触する構造と
なつている。したがつてこのケース自体からキー信号を
導出せねばならず、上述公報第２図に示す如きコネクタ
を必要としたり、また同第６図に示される如くこのケー
ス自体に電子部品を接続しなければならず、半田付、導
電接着材等を必要とするので構造、製作工程は複雑にな
らざるを得なかつた。本発明は上述難点に鑑み、電卓の
下部外装ケースには複数の点状電極のみを互いに絶縁さ
せて設け、その上に一対の電極及び配線導体が設けられ
た可撓性板を配置したものである。第１図にその一例を
示す。１は電卓下部外装ケースでプラスチック等の有機
材で成り電池収納部１ａが１体に成型されている。
このケース１の内面に点状電極２を互いに絶縁させてマ
トリックス状に設ける。その製法は例えば導電性ペイン
トをスクリーン、オフセット印刷等で行なう。あるいは
ゴム板を用いたスタンプ印刷、ステンシルによるスプレ
ー法、ローラ法等が好適である。３はスペーサで孔４を
２に対応して設けてある。
材料はゴム、プラスチック等種種の絶縁材を用いること
ができる。５はポリエステル、ナイロン、エチレンプロ
ピレンゴム、クロロプレンゴム等で成る可撓性板で、下
面に前記同様の導電性ペイントを前記同様の厚膜印刷技
術で塗布し、一対の電極６Ａ及び配線端子６Ｂ配線導体
６Ｃを設ける。
６Ｂは表示器Ｄ、演算素子Ｌ等が備えられた基板１０の
電極ＩＯＡに圧着又は導電接着される。
導電性ペイントの好適材料を考慮すれば下部外装ケース
の固定接点２は６Ａの一対の電極の短絡のみであ’るの
で比較的抵抗の高い安価なカーボンを分散した導電ペイ
ントを用いることができる。６Ａ〜６Ｃには銀や銅等の
金属を含む導電性粒子を分散した抵抗値の小さな導電性
ペイントが望しい。
なぜなら６Ａ〜６Ｃは導通路長を相当必要とする為に、
回路抵抗が高まり信号の劣化をまねく為である。ところ
が一般に金属は金を除けば酸化、硫化等を起し、抵抗値
を増加する為６Ａ、６Ｂ等の接触抵抗が増大してしまう
。そこで６Ａ、６Ｂにはさらにカーボン導電ペイントを
保護層としてオーバーコートすることが望しい。さらに
配線導体６Ｃにも前孔保護用カーボン導電ペイントをす
−バーコードしても良いが、ここはむしろ耐湿性絶縁性
のペイントを配線パターン６Ｃ上又は６Ａ，６Ｂを除く
全面に印刷塗布する事が望しい。前記ペイントにより６
Ｃは直接露出されない為に導電粒子の酸化、硫化を防止
しさらには特に銀ペイントに多い銀移行を防止すること
も出来る。７は第２図に示す如くキートツプ９の復帰用
スプリングで、ドーム８を有するゴム板、１１は電卓の
上部外装ケースである。
【図面の簡単な説明】
第１図は本発明の一実施例の分解斜視図、第２図はその
一部断面図である。 １・・・・・・外装ケース、２・・・・・・固定電極、
５・・・・・・可撓性板、６Ａ，６Ｂ，６Ｃ・・・・・
・可動電極。

Claims (1)

  1. 【特許請求の範囲】 １ 電子式卓上計算機の下部外装ケースの内面に独立し
    た点状電極を複数マトリックス状に設け、前記点状固定
    電極に対応した位置に一対の電極を複数マトリックス状
    に配列した可撓性板をスペーサを介して配置したことを
    特徴とする小型電卓。 ２ 前記電極は導電ペイントを含むことを特徴とする特
    許請求の範囲第１項記載の小型電卓。
JP51110046A 1976-09-14 1976-09-14 小型電卓 Expired JPS5927940B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP51110046A JPS5927940B2 (ja) 1976-09-14 1976-09-14 小型電卓
US05/833,344 US4180711A (en) 1976-09-14 1977-09-14 Desk-top calculator keyboard switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51110046A JPS5927940B2 (ja) 1976-09-14 1976-09-14 小型電卓

Publications (2)

Publication Number Publication Date
JPS5335451A JPS5335451A (en) 1978-04-01
JPS5927940B2 true JPS5927940B2 (ja) 1984-07-09

Family

ID=14525725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51110046A Expired JPS5927940B2 (ja) 1976-09-14 1976-09-14 小型電卓

Country Status (2)

Country Link
US (1) US4180711A (ja)
JP (1) JPS5927940B2 (ja)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7624175U1 (de) * 1976-07-31 1976-11-25 Wilhelm Ruf Kg, 8000 Muenchen Tastatur
JPH0229645Y2 (ja) * 1979-07-19 1990-08-09
US4297542A (en) * 1979-12-19 1981-10-27 Shumway Anthony G Folded circuit switch apparatus having multiple contacts
US4354068A (en) * 1980-02-04 1982-10-12 Texas Instruments Incorporated Long travel elastomer keyboard
US4368369A (en) * 1980-03-14 1983-01-11 Citizen Watch Co., Ltd. Electrical switch
US4320573A (en) * 1980-05-30 1982-03-23 Oak Industries Inc. Method of manufacture for bendable membrane switch
US4403272A (en) * 1980-06-02 1983-09-06 Oak Industries Inc. Membrane switch interconnect tail and printed circuit board connection
US4267417A (en) * 1980-06-09 1981-05-12 Illinois Tool Works Inc. Membrane keyswitch
DE3041859A1 (de) * 1980-11-06 1982-06-03 Preh Elektro Feinmechanik Tastatur
CA1163725A (en) * 1980-12-15 1984-03-13 Joseph A. Roberts Electrical switch assembly and method of manufacture
US4402131A (en) * 1981-08-05 1983-09-06 Advanced Circuit Technology Electrical switch assembly and method of manufacture
US4345119A (en) * 1981-02-19 1982-08-17 Motorola Inc. Membrane switch assembly with improved spacer
US4555600A (en) * 1981-02-23 1985-11-26 Apm Corporation Vandal-resistant shield for telephone keypad
US4511076A (en) * 1981-04-10 1985-04-16 Braun Aktiengesellschaft Method of soldering circuit boards with solder-repellent contacts
US4433223A (en) * 1981-08-24 1984-02-21 Oak Industries Inc. Pressure-sensitive adhesive and application thereof
US4418257A (en) * 1981-11-23 1983-11-29 The Keyboard Company Keyboard switch
JPS58117619A (ja) * 1981-12-29 1983-07-13 キヤノン株式会社 電子機器
US4405849A (en) * 1982-03-08 1983-09-20 W. H. Brady Co. Switching contact
AT374961B (de) * 1982-05-12 1984-06-25 Hans Gnad Ges M B H Elektrisches schalt- und frontplattenelement
JPS594096A (ja) * 1982-06-30 1984-01-10 日本メクトロン株式会社 異種回路基板相互の接続方法
US4535219A (en) * 1982-10-12 1985-08-13 Xerox Corporation Interfacial blister bonding for microinterconnections
JPS59135536A (ja) * 1983-01-24 1984-08-03 Sharp Corp キ−入力装置
US4460810A (en) * 1983-06-20 1984-07-17 Amp Incorporated Keyboard switch having integral bezel
US4523060A (en) * 1983-11-17 1985-06-11 Advanced Input Devices, Inc. Combination keyboard
DE3422273A1 (de) * 1984-06-15 1985-12-19 Fichtel & Sachs Ag, 8720 Schweinfurt Optoelektronische baueinheit
US4790968A (en) * 1985-10-19 1988-12-13 Toshiba Silicone Co., Ltd. Process for producing pressure-sensitive electroconductive sheet
US4935174A (en) * 1986-01-13 1990-06-19 Canon Kabushiki Kaisha Resin molded article bearing electric circuit patterns and process for producing the same
JPS63199428U (ja) * 1987-06-15 1988-12-22
US4990900A (en) * 1987-10-01 1991-02-05 Alps Electric Co., Ltd. Touch panel
US4939428A (en) * 1988-01-26 1990-07-03 Westek Associates Touch switching system
US5061830A (en) * 1990-04-16 1991-10-29 Ambrose Stephen D Extension electrical switch system and method of manufacture
JPH04169917A (ja) * 1990-05-07 1992-06-17 Toshiba Corp 携帯型電子機器
US5187647A (en) * 1991-03-11 1993-02-16 John Fluke Mfg. Co., Inc. Electronic instrument keypad assembly with z-axis oriented electrical interconnect
US5147990A (en) * 1991-04-01 1992-09-15 Motorola, Inc. Integral slide switch
US5670760A (en) * 1995-10-24 1997-09-23 Golden Books Publishing Company, Inc. Multi-switch membrane-switch assembly
US5802459A (en) * 1996-02-20 1998-09-01 Ncr Corporation Peripheral device having a communication port for cable or wireless module connection
US5681122A (en) * 1996-02-20 1997-10-28 Ncr Corporation Fluid isolation and dispersion system for tactile input devices
US5734137A (en) * 1996-07-22 1998-03-31 Ericsson, Inc. Universal keypad assembly
CA2197828C (en) * 1997-02-18 2004-05-04 Normand Dery Thin-film antenna device for use with remote vehicle starting systems
US6369330B2 (en) * 1999-09-24 2002-04-09 Chin-Wen Chou Printed circuit board with pushbutton and air corridors
US7146228B2 (en) * 2000-07-19 2006-12-05 Medicotest A/S Skin electrode with a by-pass element
US8422240B2 (en) * 2009-07-27 2013-04-16 Panasonic Corporation Electronic apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728509A (en) * 1970-09-26 1973-04-17 Alps Electric Co Ltd Push-button switch with resilient conductive contact member with downwardly projecting ridges
JPS5024770A (ja) * 1973-07-05 1975-03-17
US3860771A (en) * 1973-10-29 1975-01-14 Chomerics Inc Keyboard switch assembly with dome shaped actuator having associated underlying contactor means
US3988551A (en) * 1975-04-03 1976-10-26 Magic Dot, Inc. Membrane keyboard apparatus having common apertured electrode, aperture inserted electrodes and conductive bubble contactors
US3987259A (en) * 1975-06-12 1976-10-19 Globe-Union Inc. Membrane switch apparatus having sequential bridging contact arrangement
US4066851A (en) * 1975-10-30 1978-01-03 Chomerics, Inc. Keyboard switch assembly having foldable printed circuit board, integral spacer and preformed depression-type alignment fold
US4045636A (en) * 1976-01-28 1977-08-30 Bowmar Instrument Corporation Keyboard switch assembly having printed circuit board with plural layer exposed contacts and undersurface jumper connections
US4081898A (en) * 1976-04-19 1978-04-04 Texas Instruments Incorporated Method of manufacturing an electronic calculator utilizing a flexible carrier

Also Published As

Publication number Publication date
JPS5335451A (en) 1978-04-01
US4180711A (en) 1979-12-25

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