WO1987001235A1 - Contact rubber - Google Patents

Contact rubber Download PDF

Info

Publication number
WO1987001235A1
WO1987001235A1 PCT/JP1986/000419 JP8600419W WO8701235A1 WO 1987001235 A1 WO1987001235 A1 WO 1987001235A1 JP 8600419 W JP8600419 W JP 8600419W WO 8701235 A1 WO8701235 A1 WO 8701235A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
oil
conductive
contact
contact rubber
Prior art date
Application number
PCT/JP1986/000419
Other languages
French (fr)
Japanese (ja)
Inventor
Yasuhisa Osawa
Yasuko Kimura
Original Assignee
Fuji Rubber Company Limited
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
Priority claimed from JP1985125217U external-priority patent/JPH0138822Y2/ja
Priority claimed from JP61093444A external-priority patent/JPS62252016A/en
Application filed by Fuji Rubber Company Limited filed Critical Fuji Rubber Company Limited
Priority to KR1019870700310A priority Critical patent/KR900003800B1/en
Publication of WO1987001235A1 publication Critical patent/WO1987001235A1/en
Priority to NO871469A priority patent/NO871469D0/en
Priority to DK192087A priority patent/DK192087A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • 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
    • H01H2201/032—Conductive polymer; Rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/002—Movable contacts fixed to operating part

Definitions

  • the present invention relates to electrodes on a printed circuit board of various electronic devices such as an electronic desk calculator, a digital watch, a card processor, a personal computer, a video disc, a disc player, and a push phone. Also, the present invention relates to a structure of a contact rubber of a switch portion used as an interconnector to an LSI chip. Background fields
  • the conductive part of the contact rubber is made of insulating rubber filled with carbon powder and uniformly dispersed conductive rubber and insulating rubber are vulcanized and bonded, or conductive ink is printed on insulating rubber. Things exist. Disclosure of the invention
  • the contact rubber is operated by pushing the key top part, which is integrally molded on top of the contact rubber, with a finger.
  • fat such as finger oil and an insulating material such as organic acid ester are applied to the surface of the contact rubber. It adheres and penetrates into the contact rubber, and after a long period of time, the oil breaks out into the conductive part, and at the same time, the low-molecular-weight shkirosene contained in the contact rubber.
  • the insulating material such as oil and the like also changes with time, and may be bent out to the conductive part, eventually increasing the contact resistance value of the conductive part, impeding stable input, and eventually leading to disconnection. .
  • the present invention provides:-an oil-resistant portion is formed between the conductive portion and the insulating rubber portion to prevent the insulating material such as oil from the outside and inside of the contact rubber from being bent out to the conductive portion; is there.
  • a method of disposing a resin film between the insulating rubber and the conductive rubber a method of disposing the resin film between the conductive rubber and the conductive rubber, or disposing an oil-resistant rubber in the oil-resistant part can be considered. .
  • a conductive portion 2 is disposed at the center of the inside of the key top portion 1 via an oil-resistant portion 3.
  • Reference numeral 4 denotes an electrode on the print substrate 5.
  • FIG. 2 shows another embodiment, in which a conductive portion 14 and an oil-resistant portion 13 are disposed at the center of the inside of the key-top portion ⁇ , and then a conductive portion 2 is disposed thereafter.
  • a key-top part ⁇ ⁇ of dome-shaped contact rubber is molded with insulating rubber, and a part protruding into the inner space side is formed by graft polymerization of halogen or organic substance to the siloxane acid polymer main chain.
  • Substances derived from silicon-based raw rubber such as mounts (fluorosilicone rubber, NBR, fluoro rubber, acrylic rubber, epichlorohydrin rubber, etc.) 3 Print the oil resistant part, and print conductive ink 2 on the surface It has been done. Note that an oil-resistant layer may be inserted.
  • a conductive rubber ⁇ 4 and a resin film blocking portion ⁇ 3 are first disposed on the inner surface of the key top portion ⁇ , and then the conductive rubber ⁇ 2 is further adhered. It is.
  • the inner conductive rubber ⁇ 4, the resin film 13 and the outer conductive rubber ⁇ 2 are separately and integrally formed, and punched into a fixed shape as electrical contact parts and adhered inside the insulating rubber key top. To produce.

Abstract

A structure of a contact rubber used for various kinds of electronic appliances, and to preventing an oily substance which has penetrated into the contact rubber from the outside, or which is contained in the same rubber from coming out to the surface of a conductive portion of said rubber to thereby inhibit an increase in the contact resistance value of the conductive portion. The conductive portion (2) is formed on a key top (1), which is molded from an insulating rubber into the shape of a dome, via an oil-proof portion (3) formed of a layer of an oil-proof rubber or a resin film.

Description

明細書 接点ゴム 技術分野  Description Contact rubber Technical field
本発明は、 電子卓上計算機、 デジタルウォッチ、 ヮ ードプロセッサー、 パ一ソナルコンピューター、 ビデ 才ディスク、 才一ディ才機器、 プッシュフォン等の各 種エレク卜ロ機器のプリン卜基板上の電極どうし、 あ るいは L S I チップとの間のインタ一コネクタ一とし て使用されるスィッチ部の接点ゴムの構造に関する。 背景分野  The present invention relates to electrodes on a printed circuit board of various electronic devices such as an electronic desk calculator, a digital watch, a card processor, a personal computer, a video disc, a disc player, and a push phone. Also, the present invention relates to a structure of a contact rubber of a switch portion used as an interconnector to an LSI chip. Background fields
接点ゴムの導通部としては絶縁性ゴム中に、 カーボ ン粉末を充塡し、 均一分散させた導電ゴムと絶縁ゴム を加硫接着させたもの、 あるいは絶縁ゴムに導電イン クを印刷して成るもの等が存する。 発明の開示  The conductive part of the contact rubber is made of insulating rubber filled with carbon powder and uniformly dispersed conductive rubber and insulating rubber are vulcanized and bonded, or conductive ink is printed on insulating rubber. Things exist. Disclosure of the invention
接点ゴムは、 その上部に一体成型されたキー 卜ップ 部を指でプッシュしてキー操作するが、 このプッシュ 時に指の油等の脂肪および有機酸エステル等の絶縁性 物質が接点ゴム表面に付着し、 これが接点ゴム内に浸 透し、 長期間経過した後にこの油が導通部へ折出した り、 同時に接点ゴム内に含まれる低分子量シキロサン およびオイル等の絶縁性物質も経時的に変化し、 導通 部に折出し、 ついには導通部の接触抵抗値を増大させ 安定な入力を阻害したり、 ひいては不導通にしてしま うおそれがあった。 The contact rubber is operated by pushing the key top part, which is integrally molded on top of the contact rubber, with a finger. At the time of this push, fat such as finger oil and an insulating material such as organic acid ester are applied to the surface of the contact rubber. It adheres and penetrates into the contact rubber, and after a long period of time, the oil breaks out into the conductive part, and at the same time, the low-molecular-weight shkirosene contained in the contact rubber. In addition, the insulating material such as oil and the like also changes with time, and may be bent out to the conductive part, eventually increasing the contact resistance value of the conductive part, impeding stable input, and eventually leading to disconnection. .
そこで本発明は、 - 導通部と絶縁ゴム部との間に耐油 部を形成し、 接点ゴム外部および内部からのオイル等 の絶縁性物質が導通部へ折出するのを遮断せんとする ちのである。  Therefore, the present invention provides:-an oil-resistant portion is formed between the conductive portion and the insulating rubber portion to prevent the insulating material such as oil from the outside and inside of the contact rubber from being bent out to the conductive portion; is there.
このように耐油部を形成することで、 キー操作に際 しての指表面からの脂肪および有機酸エステル等の絶 縁性物質の付着、 また油の飛散する工場内、 調理場等 において機器を使用する場合においても導通部へ絶縁 ' 性物質が折出することを防止できる。  By forming an oil-resistant part in this way, when a key is operated, insulating substances such as fats and organic acid esters adhere to the surface of the finger, and equipment can be used in factories and kitchens where oil splashes. Even when used, it is possible to prevent the insulating material from being bent out to the conductive portion.
耐油部の構成としては、 樹脂フィルムを絶縁ゴムと 導電ゴムとの間に配置する方法、 導電ゴムと導電ゴム との間に配置する方法、 あるいは耐油部に耐油性ゴム を配置させることが考えられる。  As the configuration of the oil-resistant part, a method of disposing a resin film between the insulating rubber and the conductive rubber, a method of disposing the resin film between the conductive rubber and the conductive rubber, or disposing an oil-resistant rubber in the oil-resistant part can be considered. .
導電ゴムと導電ゴムとの間に耐油部を形成した場合 は、 この導電部のみを別個成型し、 接点ゴムにあとか ら接着一体化させる製作課程において、 この導電部を 裏表の注意をすることなく接着作業が行えるので、 作 業が簡単となり有利である。 図面の簡単な説明 If an oil-resistant part is formed between conductive rubber and conductive rubber, only this conductive part must be molded separately and then attached to the contact rubber later, so that the conductive part must be carefully noted. Since the bonding work can be performed without any trouble, the work is simplified and advantageous. BRIEF DESCRIPTION OF THE FIGURES
第 Ί 図は、 キー トップ部 1 の内部中央に導通部 2が 耐油部 3を介して配置されている。 符号 4はプリン卜 基板 5上の電極である。  In FIG. 5, a conductive portion 2 is disposed at the center of the inside of the key top portion 1 via an oil-resistant portion 3. Reference numeral 4 denotes an electrode on the print substrate 5.
第 2図は、 別の実施例を示し、 キー 卜ップ部 Ί Ί の 内部中央にまず導通部 1 4、 そして耐油部 1 3、 さら にその後に導通部 Ί 2が配されている。 発明を実施するための最良の形態 第 Ί 図に示す実施例に従って説明する。  FIG. 2 shows another embodiment, in which a conductive portion 14 and an oil-resistant portion 13 are disposed at the center of the inside of the key-top portion Ί, and then a conductive portion 2 is disposed thereafter. BEST MODE FOR CARRYING OUT THE INVENTION A description will be given according to an embodiment shown in FIG.
絶縁ゴムにてドーム状の接点ゴムのキー 卜ップ部 Ί を成型し、 その内部空間側に突出させた部分に、 シロ キ酸ポリマ—主鎖にハロゲン又は有機物をグラフ 卜重 合させた化台物等のシリコン系の生ゴムからの誘導物 質 （フロロシリコーンゴム、 N B R、 フッ素ゴム、 ァ クリルゴム、 ェピクロールヒドリンゴム等） 3の耐油 部を印刷し、 さらにその表面に導電インク 2を印刷し てある。 尚、 耐油層を挿入しても良い。  A key-top part ゴ ム of dome-shaped contact rubber is molded with insulating rubber, and a part protruding into the inner space side is formed by graft polymerization of halogen or organic substance to the siloxane acid polymer main chain. Substances derived from silicon-based raw rubber such as mounts (fluorosilicone rubber, NBR, fluoro rubber, acrylic rubber, epichlorohydrin rubber, etc.) 3 Print the oil resistant part, and print conductive ink 2 on the surface It has been done. Note that an oil-resistant layer may be inserted.
第 2図に示す第 2の実施例においては、 キー 卜ップ 部 1 Ί 内面にまず導電ゴム Ί 4、 次いで樹脂フィルム の遮断部 Ί 3を配し、 その後さらに導電ゴム Ί 2を接 着してある。 この内側導電ゴム Ί 4、 樹脂フィルム 1 3および外側導電ゴム Ί 2は、 別個に一体的に作成し、 電気接点部として一定形状に打抜きしたものを絶縁ゴ ムのキー 卜ップ内部に接着して製作する。  In the second embodiment shown in FIG. 2, a conductive rubber Ί4 and a resin film blocking portion Ί3 are first disposed on the inner surface of the key top portion Ί, and then the conductive rubber Ί2 is further adhered. It is. The inner conductive rubber Ί4, the resin film 13 and the outer conductive rubber 作成 2 are separately and integrally formed, and punched into a fixed shape as electrical contact parts and adhered inside the insulating rubber key top. To produce.

Claims

請求の範囲  The scope of the claims
. 絶縁ゴムにてドーム状に成型したキー 卜ップ部に 耐油部を介して導通部が形成されている接点ゴム。. 耐油部が、 耐油性ゴム層にて形成されている請求 の範囲 1 の接点ゴム。A contact rubber with a conductive part formed via a greaseproof part on the key top part molded into a dome shape with insulating rubber. The contact rubber according to claim 1, wherein the oil-resistant portion is formed of an oil-resistant rubber layer.
. 耐油部が樹脂フィルムにて形成されている請求の 範囲 Ί の接点ゴム。 The contact rubber according to claim 6, wherein the oil-resistant portion is formed of a resin film.
PCT/JP1986/000419 1985-08-16 1986-08-14 Contact rubber WO1987001235A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019870700310A KR900003800B1 (en) 1985-08-16 1986-08-14 Contact rubber
NO871469A NO871469D0 (en) 1985-08-16 1987-04-08 KONTAKTORGUMMI.
DK192087A DK192087A (en) 1985-08-16 1987-04-14 ELASTOMES CONTACT

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP60/125217 1985-08-16
JP1985125217U JPH0138822Y2 (en) 1985-08-16 1985-08-16
JP61093444A JPS62252016A (en) 1986-04-24 1986-04-24 Formation of continuity part of rubber contact
JP61/93444 1986-04-24

Publications (1)

Publication Number Publication Date
WO1987001235A1 true WO1987001235A1 (en) 1987-02-26

Family

ID=26434808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1986/000419 WO1987001235A1 (en) 1985-08-16 1986-08-14 Contact rubber

Country Status (5)

Country Link
EP (1) EP0233296A4 (en)
KR (1) KR900003800B1 (en)
DK (1) DK192087A (en)
ES (1) ES2001524A6 (en)
WO (1) WO1987001235A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605163A1 (en) * 1986-10-01 1988-04-15 Mcb KEYBOARD WITH READING DEVICE
GB2285340A (en) * 1993-12-30 1995-07-05 At & T Corp Elastomeric keypads

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322514A3 (en) * 1987-12-30 1990-09-12 Hewlett-Packard Company Keyboard switch system
JPH02114776A (en) * 1988-10-25 1990-04-26 Toshiba Corp X-ray diagnostic device
JP4442963B2 (en) * 1999-10-26 2010-03-31 パナソニック株式会社 Button switch
AU2002364036A1 (en) 2001-12-24 2003-07-15 Digimarc Id Systems, Llc Laser etched security features for identification documents and methods of making same
AU2002364255A1 (en) 2001-12-24 2003-07-15 Digimarc Id Systems, Llc Covert variable information on id documents and methods of making same
WO2003088144A2 (en) 2002-04-09 2003-10-23 Digimarc Id Systems, Llc Image processing techniques for printing identification cards and documents
US7824029B2 (en) 2002-05-10 2010-11-02 L-1 Secure Credentialing, Inc. Identification card printer-assembler for over the counter card issuing
US7804982B2 (en) 2002-11-26 2010-09-28 L-1 Secure Credentialing, Inc. Systems and methods for managing and detecting fraud in image databases used with identification documents
EP1614064B1 (en) 2003-04-16 2010-12-08 L-1 Secure Credentialing, Inc. Three dimensional data storage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5485375U (en) * 1977-11-30 1979-06-16
JPS5626824U (en) * 1979-08-08 1981-03-12
JPS5929932B2 (en) * 1980-04-26 1984-07-24 アルプス電気株式会社 Method for manufacturing a movable contact member for a push button switch
JPS59196517A (en) * 1983-11-02 1984-11-07 ブラザー工業株式会社 Keyboard

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472214A (en) * 1947-10-22 1949-06-07 Hurvitz Hyman Pressure responsive electrical resistor
KR900006479Y1 (en) * 1983-04-20 1990-07-26 부라더 고오교 가부시기가이샤 Key board

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5485375U (en) * 1977-11-30 1979-06-16
JPS5626824U (en) * 1979-08-08 1981-03-12
JPS5929932B2 (en) * 1980-04-26 1984-07-24 アルプス電気株式会社 Method for manufacturing a movable contact member for a push button switch
JPS59196517A (en) * 1983-11-02 1984-11-07 ブラザー工業株式会社 Keyboard

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0233296A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605163A1 (en) * 1986-10-01 1988-04-15 Mcb KEYBOARD WITH READING DEVICE
EP0266229A1 (en) * 1986-10-01 1988-05-04 M C B Keyboard with reading device
GB2285340A (en) * 1993-12-30 1995-07-05 At & T Corp Elastomeric keypads

Also Published As

Publication number Publication date
KR880700442A (en) 1988-03-15
DK192087D0 (en) 1987-04-14
DK192087A (en) 1987-04-14
EP0233296A4 (en) 1989-06-21
EP0233296A1 (en) 1987-08-26
KR900003800B1 (en) 1990-05-31
ES2001524A6 (en) 1988-06-01

Similar Documents

Publication Publication Date Title
US6259046B1 (en) Sheet with movable contacts and sheet switch
CN100483588C (en) Switch integrated casing and electronic equipment having the casing
US8186233B2 (en) Pressure sensing device
US7176894B2 (en) Double-sided keyboard for use in an electronic device
US5149923A (en) Backlit tactile keyboard with improved tactile and electrical characteristics
WO1987001235A1 (en) Contact rubber
US4532575A (en) Electronic equipment having key input function
US20090152083A1 (en) Keypad assembly for electronic device
US4800243A (en) Contactor rubber
US8098494B2 (en) Electronic device
WO2002029837A1 (en) Multi-directional input device and electronic device using the input device
US7589293B2 (en) Membrane switch circuit and keyswitch using such membrane switch circuit
CN209401524U (en) Magnetoelectricity change type keyboard switch component
JP2007012285A (en) Moving contact body and its manufacturing method
JP2007141871A (en) Sheet switch and operating sheet of same
JPS61284013A (en) One-piece contact switch
EP0703591A1 (en) Input/output device with a lamp and a switch having protection against electrostatic discharge and contamination
JP2006309686A (en) Thin keyboard key cap structure
US8104942B2 (en) Light guide sheet and movable contact element using the same
JP2004311342A (en) Structure of input device of electronic apparatus
CN109887783A (en) Magnetoelectricity change type keyboard switch component
JP2002100265A (en) Push switch and electronic apparatus using the same
JP2004253217A (en) Lighted switch
JP2008192522A (en) Movable contact unit and switch using the same
KR970078768A (en) Chemically grafted electrical devices

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): DK KR NO US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1986904938

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1986904938

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1986904938

Country of ref document: EP