JPH0520963A - Pressure sensitive conductive contact point - Google Patents
Pressure sensitive conductive contact pointInfo
- Publication number
- JPH0520963A JPH0520963A JP3265591A JP26559191A JPH0520963A JP H0520963 A JPH0520963 A JP H0520963A JP 3265591 A JP3265591 A JP 3265591A JP 26559191 A JP26559191 A JP 26559191A JP H0520963 A JPH0520963 A JP H0520963A
- Authority
- JP
- Japan
- Prior art keywords
- silicone gel
- electrode
- sheet
- electrodes
- conductive
- 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.)
- Pending
Links
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 68
- 238000003825 pressing Methods 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims description 11
- 239000012765 fibrous filler Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 229920001971 elastomer Polymers 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 125000003342 alkenyl group Chemical group 0.000 description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 10
- 239000011231 conductive filler Substances 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 125000004429 atom Chemical group 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 5
- 229920002379 silicone rubber Polymers 0.000 description 5
- 239000004945 silicone rubber Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- -1 dimethylsiloxane Chemical class 0.000 description 4
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 3
- 229930006000 Sucrose Natural products 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 239000005720 sucrose Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920005645 diorganopolysiloxane polymer Polymers 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000003709 fluoroalkyl group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910003446 platinum oxide Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Contacts (AREA)
- Push-Button Switches (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は例えば卓上計算機や押ボ
タンスイッチ付きの電気器具など、キーやボタンの押圧
操作により電気回路に電流が流れ、演算処理や適宜の電
気的操作を行なう装置に関し、特に押圧キーの押圧操作
による電極部分での接点構造に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device such as a desktop calculator or an electric appliance with a push button switch for performing arithmetic processing or appropriate electric operation by causing a current to flow in an electric circuit by pressing a key or a button. In particular, it relates to a contact structure at an electrode portion by pressing a pressing key.
【０００２】[0002]
【発明の背景】近年、ＩＣの発達により例えば卓上計算
機やワードプロセッサなどのようにキーを押圧すること
で電気回路に電流が流れ、演算処理等を行なう装置が種
々開発されている。このような装置は、例えば卓上計算
機では各キーを押すことでその部分の回路が導通して電
流が流れ、ＩＣで演算処理がなされてその結果がディス
プレーに表示されるようになっている。2. Description of the Related Art In recent years, with the development of ICs, various devices have been developed, such as desktop calculators and word processors, which carry out arithmetic processing by causing a current to flow in an electric circuit when a key is pressed. In such a device, for example, in a desktop computer, when each key is pressed, the circuit in that part is brought into conduction so that a current flows, the IC performs arithmetic processing, and the result is displayed on the display.
【０００３】ところでこのようなキーの押圧による感圧
性スイッチを具えた装置では、キーの押圧により確実に
その部分の回路が導通状態になることや、長い間使用し
ても損傷しないことなどが要求される。そこで最近では
シリコーンゴムの化学的安定性、柔軟性等が評価されて
図７に示すように、絶縁部材であるキーＫの下部に導電
性シリコーンゴムから成る接点部材Ｔを設け、キーＫの
押圧時に電極Ｅに接点部材Ｔが接することで電極Ｅでの
回路が形成される接点構造が開発されて実用化されてい
る。By the way, in a device equipped with such a pressure sensitive switch by pressing a key, it is required that the circuit of the part is surely brought into a conductive state by pressing the key, and that it is not damaged even if it is used for a long time. To be done. Therefore, recently, the chemical stability, flexibility, etc. of silicone rubber have been evaluated, and as shown in FIG. 7, a contact member T made of conductive silicone rubber is provided below the key K which is an insulating member, and the key K is pressed. A contact structure has been developed and put into practical use in which the contact member T is sometimes in contact with the electrode E to form a circuit at the electrode E.
【０００４】しかしこのような構造の接点を製造する場
合には、キーＫと接点部材Ｔとの一体成型が必要のため
加工工程が複雑となり、また電極Ｅが金属であるときは
酸化されやすく、形成される酸化被膜により接点の信頼
性が低下してしまう。更には接点部材Ｔと電極Ｅとの間
に異物が混入した場合にも、接点不良を起こす可能性も
ある。However, when manufacturing a contact having such a structure, the key K and the contact member T need to be integrally molded, which complicates the working process, and when the electrode E is a metal, it is easily oxidized. The oxide film formed reduces the reliability of the contact. Further, even if foreign matter is mixed between the contact member T and the electrode E, there is a possibility that contact failure will occur.
【０００５】[0005]
【開発を試みた技術的事項】本発明はこのような背景に
鑑みなされたものであって、導電性シリコーンゲルを適
用して電極の酸化と接点不良の問題を同時に解決できる
ような構造を有する感圧導電接点の開発を試みたもので
ある。[Technical Items Attempted to Develop] The present invention has been made in view of such a background, and has a structure in which a problem of electrode oxidation and contact failure can be simultaneously solved by applying a conductive silicone gel. This is an attempt to develop a pressure-sensitive conductive contact.
【０００６】[0006]
【目的達成の手段】即ち本出願に係る第一の発明たる感
圧導電接点は、押圧キーの押圧操作により一対の電極間
に電流が流れる感圧性スイッチにおいて、前記一対の電
極は導電性シリコーンゲルで被包され、押圧キーの押圧
操作により導電性シリコーンゲルが歪みを生じて導電状
態と成ることを特徴として成るものである。That is, the pressure-sensitive conductive contact according to the first invention of the present application is a pressure-sensitive switch in which a current flows between a pair of electrodes when a pressing key is pressed, and the pair of electrodes are made of conductive silicone gel. And the conductive silicone gel is distorted by the pressing operation of the pressing key and becomes conductive.
【０００７】また本出願に係る第二の発明たる感圧導電
接点は、前記要件に加えて前記一対の電極はパターン基
板に複数対形成され、このパターン基板には前記押圧キ
ーの下面が直接臨むとともに、各対の電極が個別に導電
性シリコーンゲルで被包されていることを特徴として成
るものである。In addition to the above requirements, in the pressure-sensitive conductive contact according to the second invention of the present application, a plurality of pairs of the pair of electrodes are formed on a pattern substrate, and the lower surface of the pressing key directly faces the pattern substrate. In addition, each pair of electrodes is individually covered with a conductive silicone gel.
【０００８】更に本出願に係る第三の発明たる感圧導電
接点は、前記要件に加えて前記一対の電極はパターン基
板に複数対形成され、このパターン基板には前記押圧キ
ーの下面が直接臨むとともに、各対の電極がシート状の
導電性シリコーンゲルで一緒に被包されていることを特
徴として成るものである。Further, in the pressure-sensitive conductive contact according to the third invention of the present application, in addition to the above requirements, a plurality of pairs of the pair of electrodes are formed on a pattern substrate, and the lower surface of the pressing key directly faces the pattern substrate. At the same time, each pair of electrodes is encapsulated together by a sheet-shaped conductive silicone gel.
【０００９】更にまた本出願に係る第四の発明たる感圧
導電接点は、前記要件に加えて前記導電性シリコーンゲ
ルは、シリコーンゲルに対して繊維状のフィラーを添加
して成るものであることを特徴として成るものである。
これら発明によって前記目的を達成しようとするもので
ある。Furthermore, in the pressure-sensitive conductive contact according to the fourth invention of the present application, in addition to the above requirements, the conductive silicone gel is formed by adding a fibrous filler to the silicone gel. It is characterized by.
These inventions are intended to achieve the above object.
【００１０】[0010]
【発明の作用】本発明では電極を導電性シリコーンゲル
で被包したから、電極が直接空気と触れることがなく酸
化されることがない。また押圧キーの下側に異物が混入
しても、導電性シリコーンゲルと電極との接触状態に変
化はないから、接点不良を生じることがない。In the present invention, since the electrode is covered with the conductive silicone gel, the electrode is not directly exposed to air and is not oxidized. Further, even if foreign matter is mixed into the lower side of the pressing key, there is no change in the contact state between the conductive silicone gel and the electrode, so that no contact failure occurs.
【００１１】[0011]
【実施例】以下本発明を図示の実施例に基づいて具体的
に説明する。符号１は一例として本発明を適用した卓上
計算機であって、このものは全体が長方形の薄板状であ
り、おもて側にキーボード部２、太陽電池３及び液晶表
示部４を設けて成る。また卓上計算機１は、化粧板５と
ラバーシート６とパターン基板たるパターンシート７と
底板８とが、上からこの順で組み合わされて成る。尚パ
ターン基板については、例えばワードプロセッサやコン
ピュータのキーボードでは正にパターンの形成された基
板が組み込まれているが、本実施例は卓上計算機１に係
るものでありパターンの形成されたものがシート状であ
るため、あえてパターンシート７という言葉を使用す
る。以下、これら各部材について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to illustrated embodiments. Reference numeral 1 is, as an example, a desk calculator to which the present invention is applied, which is a thin rectangular plate as a whole, and is provided with a keyboard portion 2, a solar cell 3 and a liquid crystal display portion 4 on the front side. Further, the desk calculator 1 is configured by combining a decorative plate 5, a rubber sheet 6, a pattern sheet 7 as a pattern substrate, and a bottom plate 8 in this order from the top. As for the pattern substrate, for example, a word processor or a keyboard of a computer incorporates a substrate on which a pattern is exactly formed, but this embodiment relates to the desk calculator 1 and the one on which the pattern is formed is a sheet. Therefore, the word "pattern sheet 7" is intentionally used. Hereinafter, each of these members will be described.
【００１２】まず化粧板５は上部側に表示部用切り欠き
９、その下側に電池用切り欠き１０、更にその下側に複
数のキー用切り欠き１１が形成されて成る。また、ラバ
ーシート６は全体がゴムから成り、化粧板５における各
キー用切り欠き１１に対応して複数の中空突起状の押圧
キー１２が形成されるとともに、これら押圧キー１２の
裏側には後述する電極に直接臨む押圧突起１３が各々形
成される。尚、従来のラバーシートでは押圧キー１２の
裏側に突起状の導電性シリコーンゴムを貼り付けて、こ
のものをその下側にある電極に押さえ付けることで突起
状の導電性シリコーンゴムを介して電極を導通状態とし
ていたが、本発明では後述するようにパターンシート７
側に導電性シリコーンゲルを設けるようにしたから、押
圧キー１２側には導電性のものを設ける必要はなく、押
圧突起１３は専ら電極を押さえ付ける作用をなす。First, the decorative plate 5 is formed with a notch 9 for a display unit on the upper side, a notch 10 for a battery below the notch 9, and a plurality of notches 11 for a key below the notch. Further, the rubber sheet 6 is entirely made of rubber, and a plurality of hollow projecting pressure keys 12 are formed corresponding to the key notches 11 in the decorative plate 5, and the back side of these pressure keys 12 will be described later. The pressing protrusions 13 that directly face the corresponding electrodes are formed. In the conventional rubber sheet, a protruding conductive silicone rubber is attached to the back side of the pressing key 12, and this is pressed against the electrode below the electrode, so that the electrode is inserted through the protruding conductive silicone rubber. However, in the present invention, the pattern sheet 7 is used as described later.
Since the conductive silicone gel is provided on the side, it is not necessary to provide a conductive material on the side of the pressing key 12, and the pressing protrusion 13 has a function of pressing the electrode exclusively.
【００１３】次にパターンシート７について説明する。
このものはプリント配線１４のなされたフィルム最上部
に液晶表示板１４ａを接続し、またその下方に太陽電池
３を設けるとともに太陽電池３の裏側に集積回路１５を
設けたものである。またフィルム下方のプリント配線１
４中には、ラバーシート６における各押圧キー１２に対
応して複数対の電極１６が形成される。そしてこれら各
対の電極１６には、図４、５に示すように個別に電極１
６を被包するように導電性シリコーンゲル１７が設けら
れる。尚、対の電極といった場合には、二つの電気接点
から成る場合の他、三以上の電気接点により電極が構成
される場合も含むものである。ここで導電性シリコーン
ゲル１７で各対の電極１６を個別に被包する方法として
は、電極１６の部分に個別に注入して硬化させる方法や
シルクスクリーン等の適宜の印刷手段により個々の電極
１６に液体状の導電性シリコーンゲルを印刷し、その後
硬化させる方法がある。Next, the pattern sheet 7 will be described.
In this device, a liquid crystal display board 14a is connected to the uppermost portion of the film on which the printed wiring 14 is formed, the solar cell 3 is provided below the liquid crystal display board 14a, and an integrated circuit 15 is provided behind the solar cell 3. Printed wiring 1 under the film
In FIG. 4, a plurality of pairs of electrodes 16 are formed corresponding to each pressing key 12 on the rubber sheet 6. The electrodes 16 of each pair are individually connected to the electrodes 1 as shown in FIGS.
A conductive silicone gel 17 is provided so as to encapsulate 6. The term "paired electrodes" includes not only two electrical contacts but also three or more electrical contacts. Here, as a method of individually encapsulating each pair of electrodes 16 with the conductive silicone gel 17, a method of individually injecting into the electrode 16 portion and curing it, or an appropriate printing means such as a silk screen is used for each electrode 16 There is a method in which a liquid conductive silicone gel is printed on and then cured.
【００１４】尚このような方法を採る場合には、各電極
１６に導電性シリコーンゲルをのせた後にこれを加熱硬
化させるという困難はあるが、導電性シリコーンゲルを
各電極１６に固定できるという点では優れるものであ
る。In the case where such a method is adopted, it is difficult to heat and cure the conductive silicone gel after it is placed on each electrode 16, but the conductive silicone gel can be fixed to each electrode 16. Then it is excellent.
【００１５】また電極１６の被包の仕方はこの他にも、
例えば図６に示すようにフィルムの電極１６が形成され
る側の面に一面に導電性シリコーンゲル１７を設けるよ
うにしてもよい。因みにこのように一面に導電性シリコ
ーンゲル１７を設ける方法としては、パターンシート７
と導電性シリコーンゲル１７のシートとを別の工程で成
形し、これら両者を重ね合わせる方法がある。尚重ね合
わせに際しては、パターンシート７に単に導電性シリコ
ーンゲル１７のシートをのせるだけでもよいが、両者に
適宜の係止構造を設け両者の位置がずれないようにして
もよい。The method of encapsulating the electrode 16 is not limited to this.
For example, as shown in FIG. 6, a conductive silicone gel 17 may be provided on the entire surface of the film on which the electrodes 16 are formed. By the way, as a method for providing the conductive silicone gel 17 on one surface in this way, the pattern sheet 7 is used.
And a sheet of the conductive silicone gel 17 are formed in separate steps, and both are superposed. At the time of superimposing, the pattern sheet 7 may be simply put on the sheet of the conductive silicone gel 17, but an appropriate locking structure may be provided for both to prevent the positions of the two from shifting.
【００１６】このようにシート状の導電性シリコーンゲ
ル１７でパターンシート７を被包する場合には、導電性
シリコーンゲル１７のシートとパターンシート７とを別
の工程で成形できるから効率的に製造することができ
る。また導電性シリコーンゲル１７をシート状にする場
合には、このものを多孔化したシートとすることもでき
る。尚、多孔状の導電性シリコーンゲル１７のシートを
作成する場合には、シリコーンゲル原液にあらかじめシ
ョ糖を混入しておき、これを平板等の上に流して加熱硬
化させてシート状にした後、これを水中に浸けてショ糖
を溶出して、その除去痕跡に空孔を形成させる。因みに
通常このような溶出多孔化法は塩化ナトリウムを使用し
て行なうが、対象が電気製品であるため残っていた塩化
ナトリウムによる錆の発生等を考慮して非電解質である
ショ糖を適用したものである。尚、導電性シリコーンゲ
ル１７を多孔質状のシートとすれば、後述する導電性フ
ィラーの選択に当たっては、使用しやすいフィラーの選
択の幅を広くすることができるという利点があるが、こ
の点については後述する。When the pattern sheet 7 is wrapped with the sheet-like conductive silicone gel 17 as described above, the sheet of the conductive silicone gel 17 and the pattern sheet 7 can be molded in different steps, so that they can be efficiently manufactured. can do. Further, when the conductive silicone gel 17 is formed into a sheet, this may be a porous sheet. When a sheet of porous conductive silicone gel 17 is prepared, sucrose is mixed in the silicone gel stock solution in advance, and this is poured onto a flat plate or the like and heat-cured to form a sheet. Then, this is immersed in water to elute sucrose, and pores are formed in the removal trace. Incidentally, such an elution porosification method is usually performed using sodium chloride, but since the object is an electrical product, sucrose, which is a non-electrolyte, has been applied in consideration of the occurrence of rust due to remaining sodium chloride. Is. In addition, when the conductive silicone gel 17 is a porous sheet, there is an advantage that it is possible to widen the range of selection of the filler which is easy to use in the selection of the conductive filler described later. Will be described later.
【００１７】ここで電極１６を被包する導電性シリコー
ンゲル１７ついて説明する。まずシリコーンゲルは、ジ
メチルシロキサン成分単位からなるもので、次式［１］
で使用されるシリコーンゲルの原液たるジオルガノポリ
シロキサン（以下Ａ成分という）：
ＲＲ１ ２ＳｉＯ−（Ｒ２ ２ＳｉＯ）ｎＳｉＲ１ ２Ｒ…［１］
［ただし、Ｒはアルケニル基であり、Ｒ１は脂肪族不飽
和結合を有しない一価の炭化水素基であり、Ｒ２は一価
の脂肪族炭化水素基（Ｒ２のうち少なくとも５０モル％
はメチル基であり、アルケニル基を有する場合にはその
含有率は１０モル％以下である）であり、ｎはこの成分
の２５℃における粘度が１００〜１００，０００ｃＳｔ
になるような数である］と、２５℃における粘度が５０
００ｃＳｔ以下であり、１分子中に少なくとも２個のＳ
ｉ原子に直接結合した水素原子を有するシリコーンゲル
の原液たるオルガノハイドロジェンポリシロキサン（Ｂ
成分）とからなり、且つこのＢ成分中のＳｉ原子に直接
結合している水素原子の合計量に対するＡ成分中に含ま
れるアルケニル基の合計量の比（モル比）が０．１〜
２．０になるように調整された混合物を硬化させること
により得られる付加反応型シリコーンコポリマーであ
る。Here, the conductive silicone gel 17 encapsulating the electrode 16 will be described. First, the silicone gel is composed of dimethylsiloxane component units and has the following formula [1]
Diorganopolysiloxane (hereinafter referred to as the component A), which is the undiluted solution of the silicone gel used in: RR 1 2 SiO— (R 2 2 SiO) n SiR 1 2 R ... [1] R 1 is a monovalent hydrocarbon group having no aliphatic unsaturated bond, R 2 is a monovalent aliphatic hydrocarbon group (at least 50 mol% of R 2
Is a methyl group, and when it has an alkenyl group, its content is 10 mol% or less), and n is the viscosity of this component at 25 ° C. is 100 to 100,000 cSt.
The viscosity at 25 ° C is 50
00cSt or less and at least 2 S in one molecule
Organohydrogenpolysiloxane (B) which is a stock solution of a silicone gel having a hydrogen atom directly bonded to an i atom.
Component) and the ratio (molar ratio) of the total amount of alkenyl groups contained in the component A to the total amount of hydrogen atoms directly bonded to the Si atoms in the component B is 0.1.
It is an addition reaction type silicone copolymer obtained by curing a mixture adjusted to 2.0.
【００１８】このシリコーンゲルについてさらに詳しく
説明すると、上記Ａ成分は直鎖状の分子構造を有し、分
子の両末端にあるアルケニル基ＲがＢ成分中のＳｉ原子
に直接結合した水素原子と付加して架橋構造を形成する
ことができる化合物である。この分子末端に存在するア
ルケニル基は、低級アルケニル基であることが好まし
く、反応性を考慮するとビニル基が特に好ましい。The silicone gel will be described in more detail. The above-mentioned component A has a linear molecular structure, and alkenyl groups R at both ends of the molecule are added to hydrogen atoms directly bonded to Si atoms in component B. And a compound capable of forming a crosslinked structure. The alkenyl group present at the terminal of this molecule is preferably a lower alkenyl group, and a vinyl group is particularly preferable in view of reactivity.
【００１９】また分子末端に存在するＲ１は脂肪族不飽
和結合を有しない一価の炭化水素基であり、このような
基の具体例としてはメチル基、プロピル基及びヘキシル
基等のようなアルキル基、フェニル基並びにフロロアル
キル基を挙げることができる。R 1 at the terminal of the molecule is a monovalent hydrocarbon group having no aliphatic unsaturated bond, and specific examples of such a group include methyl group, propyl group and hexyl group. Examples thereof include an alkyl group, a phenyl group and a fluoroalkyl group.
【００２０】上記［１］式においてＲ２は一価の脂肪族
炭化水素であり、このような基の具体的な例としては、
メチル基、プロピル基及びヘキシル基等のようなアルキ
ル基並びにビニル基のような低級アルケニル基を挙げる
ことができる。ただし、Ｒ２のうち少なくとも５０モル
％はメチル基であり、Ｒ２がアルケニル基である場合に
は、アルケニル基は１０モル％以下の量であることが好
ましい。アルケニル基の量が１０モル％を越えると架橋
密度が高くなり過ぎて高粘度になりやすい。またｎは、
このＡ成分の２５℃における粘度が通常は１００〜１０
０，０００ｃＳｔ、好ましくは２００〜２０，０００ｃ
Ｓｔの範囲内になるように設定される。In the above formula [1], R 2 is a monovalent aliphatic hydrocarbon, and specific examples of such a group include:
Examples thereof include alkyl groups such as methyl group, propyl group and hexyl group, and lower alkenyl groups such as vinyl group. However, at least 50 mol% of R 2 is a methyl group, when R 2 is an alkenyl group is preferably an alkenyl group is the amount of 10 mol% or less. If the amount of alkenyl groups exceeds 10 mol%, the crosslink density becomes too high and the viscosity tends to be high. Also, n is
The viscosity of this A component at 25 ° C. is usually 100 to 10
20,000 cSt, preferably 200-20,000 cSt
It is set to be within the range of St.
【００２１】上記のＢ成分は、Ａ成分の架橋剤でありＳ
ｉ原子に直接結合した水素原子がＡ成分中のアルケニル
基と付加してＡ成分を硬化させる。Ｂ成分は上記のよう
な作用を有していればよく、Ｂ成分としては直鎖状、分
岐した鎖状、環状、あるいは網目状などの種々の分子構
造のものが使用できる。The above-mentioned component B is a cross-linking agent for component A and is S
The hydrogen atom directly bonded to the i atom adds to the alkenyl group in the A component to cure the A component. The component B has only to have the above-mentioned action, and as the component B, those having various molecular structures such as linear, branched, cyclic, or network can be used.
【００２２】また、Ｂ成分中のＳｉ原子には水素原子の
他、有機基が結合しており、この有機基は通常はメチル
基のような低級アルキル基である。さらに、Ｂ成分の２
５℃における粘度は通常は５０００ｃＳｔ以下、好まし
くは５００ｃＳｔ以下である。このようなＢ成分の例と
しては、分子両末端がトリオルガノシロキシ基で封鎖さ
れたオルガノハイドロジェンポリシロキサン、ジオルガ
ノシロキサンとオルガノハイドロジェンシロキサンとの
共重合体、テトラオルガノテトラハイドロジェンシクロ
テトラシロキサン、ＨＲ１ ２ＳｉＯ １／２単位とＳｉ
Ｏ ４／２単位とからなる共重合体シロキサン、及びＨ
Ｒ１ ２ＳｉＯ １／２単位とＲ１ ３ＳｉＯ １／２単位
とＳｉＯ ４／２単位とからなる共重合体ポリシロキサ
ンを挙げることができる。ただし上記式においてＲ１は
前記と同じ意味である。In addition to the hydrogen atom, an organic group is bonded to the Si atom in the B component, and this organic group is usually a lower alkyl group such as a methyl group. Furthermore, 2 of B component
The viscosity at 5 ° C. is usually 5000 cSt or less, preferably 500 cSt or less. Examples of such component B include organohydrogenpolysiloxanes having both ends of the molecule blocked with triorganosiloxy groups, copolymers of diorganosiloxane and organohydrogensiloxane, and tetraorganotetrahydrogencyclotetrasiloxane. , HR 1 2 SiO 1/2 units and Si
Copolymer siloxane consisting of O 4/2 units, and H
Mention may be made of a copolymer polysiloxane composed of R 1 2 SiO 1/2 units, R 1 3 SiO 1/2 units and SiO 4/2 units. However, in the above formula, R 1 has the same meaning as described above.
【００２３】そして上記のＢ成分中のＳｉに直接結合し
ている水素原子の合計モル量に対するＡ成分中のアルケ
ニル基の合計モル量との比率が通常は０．１〜２．０、
好ましくは０．１〜１．０の範囲内になるようにＡ成分
とＢ成分とを混合して硬化させることにより製造され
る。The ratio of the total molar amount of alkenyl groups in the component A to the total molar amount of hydrogen atoms directly bonded to Si in the component B is usually 0.1 to 2.0,
Preferably, it is produced by mixing the component A and the component B so as to be in the range of 0.1 to 1.0 and curing.
【００２４】この場合の硬化反応は、通常は触媒を用い
て行なわれる。ここで使用される触媒としては、白金系
触媒が好適であり、この例としては微粉砕元素状白金、
塩化白金酸、酸化白金、白金とオレフィンとの錯塩、白
金アルコラート及び塩化白金酸とビニルシロキ酸との錯
塩を挙げることができる。このような錯塩はＡ成分とＢ
成分との合計重量に対して通常は０．１ｐｐｍ（白金換
算量、以下同様）以上、好ましくは０．５ｐｐｍ以上の
量で使用される。このような触媒の量の上限については
特に制限はないが、例えば触媒が液状である場合、ある
いは溶液として使用することができる場合には２００ｐ
ｐｍ以下の量で十分である。The curing reaction in this case is usually carried out using a catalyst. As the catalyst used here, a platinum-based catalyst is suitable, and as this example, finely divided elemental platinum,
Examples thereof include chloroplatinic acid, platinum oxide, a complex salt of platinum and an olefin, platinum alcoholate, and a complex salt of chloroplatinic acid and vinylsiloxane. Such complex salts consist of A component and B
It is usually used in an amount of 0.1 ppm (platinum equivalent, the same applies below) or more, preferably 0.5 ppm or more based on the total weight of the components. The upper limit of the amount of such a catalyst is not particularly limited, but, for example, when the catalyst is in a liquid state or can be used as a solution, 200 p
An amount of pm or less is sufficient.
【００２５】そして上記のようなＡ成分、Ｂ成分及び触
媒を混合し、室温に放置するか、あるいは加熱すること
により硬化して本発明で使用されるシリコーンゲルが生
成する。加熱して硬化させる場合、加熱温度は通常５０
〜１６０℃である。このようにして得られたシリコーン
ゲルは、ＪＩＳ Ｋ（Ｋ−２２０７−１９８０ ５０ｇ
荷重）で測定した針入度が通常５〜２５０を有する。尚
このようなシリコーンゲルの硬度は、上記Ａ成分とＢ成
分とにより形成された架橋構造によって変動する。Then, the components A, B and the catalyst as described above are mixed and left to stand at room temperature or heated to cure to form the silicone gel used in the present invention. When curing by heating, the heating temperature is usually 50.
~ 160 ° C. The silicone gel thus obtained is JIS K (K-2207-1980 50 g
Penetration measured by (load) usually has 5-250. The hardness of such a silicone gel varies depending on the cross-linking structure formed by the A component and the B component.
【００２６】また他の方法として両末端がメチル基であ
るシリコーンオイルを、得られるシリコーンゲルに対し
て５〜７５重量％の範囲内の量であらかじめ添加するこ
とにより調整することができる。シリコーンゲルは上記
のようにして調整することもできるし、また市販されて
いるものを使用することもできる。As another method, it can be adjusted by previously adding a silicone oil having a methyl group at both ends in an amount within a range of 5 to 75% by weight based on the obtained silicone gel. The silicone gel can be prepared as described above, or a commercially available one can be used.
【００２７】本発明で使用することができる市販品の例
としては、ＣＦ５０２７、ＴＯＵＧＨ−２、ＴＯＵＧＨ
−３、ＴＯＵＧＨ−４、ＴＯＵＧＨ−５、ＴＯＵＧＨ−
６、ＴＯＵＧＨ−７（トーレ・ダウコーニングシリコー
ン社製）やＸ３２−９０２／ｃａｔ１３００、ＫＥ１３
０８／ｃａｔ−１３００−Ｌ４（信越化学工業株式会社
製）、Ｆ２５０−１２１（日本ユニカ株式会社製）等を
挙げることができる。Examples of commercially available products that can be used in the present invention include CF5027, TOUGH-2, TOUGH.
-3, TOUGH-4, TOUGH-5, TOUGH-
6, TOUGH-7 (manufactured by Toray Dow Corning Silicone Co., Ltd.), X32-902 / cat1300, KE13
08 / cat-1300-L4 (manufactured by Shin-Etsu Chemical Co., Ltd.), F250-121 (manufactured by Nippon Yunika Co., Ltd.) and the like.
【００２８】尚、上記のＡ成分、Ｂ成分及び触媒の他
に、顔料、硬化遅延剤、難燃剤、充填剤等をシリコーン
ゲルの特性を損なわない範囲内で配合することもでき、
また場合によっては、防振、緩衝性等の機能を高める為
に、微小中空球体のフィラーを混入してなるシリコーン
ゲルを用いてもよく、このような材料に日本フィライト
株式会社製造のフィライト（登録商標）や同社販売のエ
クスパンセル（登録商標）、マツモトマイクロスフェア
ー（松本油脂製薬株式会社製造販売）等が例示できる。In addition to the above-mentioned components A, B and catalysts, pigments, curing retardants, flame retardants, fillers, etc. may be added within a range that does not impair the properties of the silicone gel,
In some cases, in order to enhance functions such as anti-vibration and cushioning properties, a silicone gel prepared by mixing a filler of fine hollow spheres may be used. Trademark), Expancel (registered trademark) sold by the same company, Matsumoto Microsphere (manufactured and sold by Matsumoto Yushi-Seiyaku Co., Ltd.), and the like.
【００２９】次にこのシリコーンゲルに導電性を付与す
るために添加される導電性フィラーについて説明する。
導電性フィラーとしては、カーボンブラック、カーボン
ファイバー、グラファイト、金属粉末、金属酸化物、金
属フレーク、金属繊維等、そのものが導通物質の他、絶
縁性の有機、無機の微粒子にニッケル、コバルト、金、
銀等の導電物質をメッキ、コート等したものがある。こ
れらは一般に、球状、リン片状、繊維状等の任意形状を
呈しており、本発明では、これら導電性フィラーの内い
ずれをも使用することができるが、導電性シリコーンゲ
ル材に仕上げたときに、圧縮変位量を横軸にとり、電気
抵抗値を縦軸にとった導電性曲線が右下がりとなる繊維
状のフィラーを１種単独でまたは複数種混合して適用す
れば、押圧力に比例して導電状態が良くなる比較的使い
やすい導電性シリコーンゲルを得ることができる。Next, the conductive filler added to impart conductivity to the silicone gel will be described.
As the conductive filler, carbon black, carbon fiber, graphite, metal powder, metal oxides, metal flakes, metal fibers and the like, other than the conductive substance itself, insulating organic, inorganic fine particles nickel, cobalt, gold,
There is a plated or coated conductive material such as silver. These generally have any shape such as spherical, flaky, fibrous and the like, and in the present invention, any of these conductive fillers can be used, but when finished as a conductive silicone gel material In addition, if one type of fibrous filler is used alone or a mixture of multiple types is applied, the conductivity curve in which the horizontal axis is the amount of compressive displacement and the vertical axis is the electrical resistance value is the electrical resistance value. As a result, a relatively easy-to-use conductive silicone gel having a good conductive state can be obtained.
【００３０】尚、前述した多孔質状の導電性シリコーン
ゲルのシートに上記導電性曲線が通常右上がりとなる球
状またはリン片状の導電性フィラーを適用する場合に
は、導電性曲線が比較的急な右下がりとなるため使いや
すいフィラーとなる。また多孔質状の導電性シリコーン
ゲルのシートに、中空球体のメッキタイプの導電性フィ
ラーを適用しても導電性曲線が右下がりとなるが、この
ような導電性フィラーはシリコーンゲル原液との比重差
の点が解消されるので、フィラーの分散性がよいという
利点がある。When the spherical or scaly conductive filler whose conductivity curve normally rises to the right is applied to the above-mentioned porous conductive silicone gel sheet, the conductivity curve is relatively high. It becomes a filler that is easy to use because it falls sharply to the right. When a hollow sphere-plating type conductive filler is applied to a porous conductive silicone gel sheet, the conductivity curve also decreases to the right, but such conductive filler has a specific gravity of the silicone gel stock solution. Since the difference is eliminated, there is an advantage that the dispersibility of the filler is good.
【００３１】また導電性フィラーは、一般的にはシリコ
ーンゲル中に均一に分配される事が望ましく、極力沈澱
を生じない様に配慮する必要がある。このためには、ガ
ラス系や樹脂系の微小中空球体に銀等の導電金属をコー
トしたものを用いることで解決できる。次に底板８は、
パターンシート７における電極１６を下側で保持するフ
ラットな保持面１８を有する。Further, it is generally desirable that the conductive filler be uniformly distributed in the silicone gel, and it is necessary to take care so as not to cause precipitation as much as possible. This can be solved by using glass-based or resin-based minute hollow spheres coated with a conductive metal such as silver. Next, the bottom plate 8
It has a flat holding surface 18 for holding the electrode 16 of the pattern sheet 7 on the lower side.
【００３２】本発明を適用した卓上計算機１は以上述べ
た構造を有するものであって、このものを使用するとき
には太陽電池３が機能するのに十分明るい場所で適宜の
押圧キー１２を押す。このようにすれば押圧キー１２の
裏面の押圧突起１３が導電性シリコーンゲル１７を押し
込み導電性シリコーンゲル１７に歪みを生じさせる。一
定以上の歪みを生ずると導電性シリコーンゲル１７の抵
抗値が小さくなり、押圧された部分の電極１６が導通状
態となる。これにより集積回路１５で適宜の演算がなさ
れ、その結果が液晶表示部４に表示される。The desktop computer 1 to which the present invention is applied has the structure described above, and when this computer is used, an appropriate pressing key 12 is pressed in a place bright enough for the solar cell 3 to function. In this way, the pressing protrusion 13 on the back surface of the pressing key 12 presses the conductive silicone gel 17 and causes the conductive silicone gel 17 to be distorted. When the strain exceeds a certain level, the resistance value of the conductive silicone gel 17 becomes small, and the electrode 16 in the pressed portion becomes conductive. As a result, the integrated circuit 15 performs an appropriate calculation, and the result is displayed on the liquid crystal display unit 4.
【００３３】以上は本発明を卓上計算機１に適用した実
施例であるが、本発明は例えばワードプロセッサやコン
ピュータのキーボード内の接点に適用できる他、電気器
具などの押ボタンスイッチにも適用できる。尚キーボー
ドや押ボタンスイッチの場合には、前記卓上計算機１の
場合と異なり押圧キーの下面が直接電極に臨んでいるの
ではなく、中間部材を介して押圧キーの押圧力が電極に
伝えられる構造となっているが、この場合であっても電
極を導電性シリコーンゲルで被包し、このものに前記中
間部材が臨むようにすることで本発明を適用することが
できる。The above is an embodiment in which the present invention is applied to the desktop computer 1, but the present invention can be applied not only to contacts in a keyboard of a word processor or a computer, but also to push button switches of electric appliances and the like. In the case of a keyboard or a push button switch, unlike the case of the desk calculator 1, the lower surface of the push key does not directly face the electrode, but the pushing force of the push key is transmitted to the electrode via an intermediate member. However, even in this case, the present invention can be applied by encapsulating the electrode with a conductive silicone gel so that the intermediate member faces this.
【００３４】[0034]
【発明の効果】本発明では、電極１６を導電性シリコー
ンゲル１７で被包したから、電極１６と導電性シリコー
ンゲル１７との間に異物が混入したり、電極１６が空気
中の酸素で酸化されることがなく、接点不良を生じるこ
とがない。また導電性シリコーンゲル１７を適用したか
ら、導電性シリコーンゴムの場合と異なり、小さな押圧
力でも歪みを生じて導電状態と成る。更に複数の電極１
６を有するパターンシート７に、シート状の導電性シリ
コーンゲル１７で各電極１６を一緒に被包する構造とす
れば、パターンシート７と導電性シリコーンゲル１７の
シートとを別工程で製造できるから効率的製造ができる
とともに、導電性シリコーンゲル１７を多孔質状のシー
トとすることもでき、これに伴いフィラー選択の幅も広
がる。According to the present invention, since the electrode 16 is covered with the conductive silicone gel 17, foreign matter is mixed between the electrode 16 and the conductive silicone gel 17, or the electrode 16 is oxidized by oxygen in the air. And no contact failure will occur. Further, since the conductive silicone gel 17 is applied, unlike the case of the conductive silicone rubber, even if a small pressing force is applied, distortion occurs and the conductive state is achieved. More electrodes 1
If the pattern sheet 7 having 6 is covered with the conductive silicone gel 17 in a sheet shape, the electrodes 16 can be manufactured in separate steps. In addition to being able to be manufactured efficiently, the conductive silicone gel 17 can be made into a porous sheet, which also expands the range of filler selection.
【図１】本発明の感圧導電接点を適用した卓上計算機を
一部破断して示す斜視図である。FIG. 1 is a partially cutaway perspective view of a desk calculator to which a pressure-sensitive conductive contact of the present invention is applied.
【図２】同上分解斜視図である。FIG. 2 is an exploded perspective view of the same.
【図３】パターンシートとその一部を拡大して示す表面
図である。FIG. 3 is a surface view showing an enlarged pattern sheet and a part thereof.
【図４】本発明の感圧導電接点の構造を示す分解斜視図
である。FIG. 4 is an exploded perspective view showing the structure of the pressure-sensitive conductive contact of the present invention.
【図５】同上縦断面図である。FIG. 5 is a vertical sectional view of the same.
【図６】同上他の接点構造を示す縦断面図である。FIG. 6 is a vertical cross-sectional view showing another contact structure of the same.
【図７】従来の感圧導電接点の構造を示す縦断面図であ
る。FIG. 7 is a vertical cross-sectional view showing the structure of a conventional pressure-sensitive conductive contact.
１ 卓上計算機 ２ キーボード部 ３ 太陽電池 ４ 液晶表示部 ５ 化粧板 ６ ラバーシート ７ パターンシート ８ 底板 ９ 表示部用切り欠き １０ 電池用切り欠き １１ キー用切り欠き １２ 押圧キー １３ 押圧突起 １４ プリント配線 １４ａ 液晶表示板 １５ 集積回路 １６ 電極 １７ 導電性シリコーンゲル １８ 保持面 1 Desktop calculator 2 keyboard part 3 solar cells 4 LCD display 5 Veneer 6 rubber sheet 7 pattern sheet 8 bottom plate 9 Notches for display 10 notches for batteries 11 key notch 12 Press key 13 Pressing protrusion 14 Printed wiring 14a Liquid crystal display board 15 Integrated circuit 16 electrodes 17 Conductive silicone gel 18 Holding surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松本 頼明 静岡県静岡市牧ケ谷550番地 静岡県静岡 工業技術センター内 (72)発明者 高田 勝己 静岡県静岡市牧ケ谷550番地 静岡県静岡 工業技術センター内 (72)発明者 八木 淳一 静岡県静岡市牧ケ谷550番地 静岡県静岡 工業技術センター内 (72)発明者 大竹 正寿 静岡県静岡市牧ケ谷550番地 静岡県静岡 工業技術センター内 (72)発明者 中西 幹育 静岡県富士市天間1461−47 (72)発明者 桜井 敬久 静岡県静岡市小鹿２丁目38−36 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yoriaki Matsumoto Shizuoka Prefecture Shizuoka City Makigaya 550 Shizuoka Prefecture Shizuoka Industrial Technology Center (72) Inventor Katsumi Takada Shizuoka Prefecture Shizuoka City Makigaya 550 Shizuoka Prefecture Shizuoka Industrial Technology Center (72) Inventor Junichi Yagi Shizuoka Prefecture Shizuoka City Makigaya 550 Shizuoka Prefecture Shizuoka Industrial Technology Center (72) Inventor Masatoshi Otake Shizuoka Prefecture Shizuoka City Makigaya 550 Shizuoka Prefecture Shizuoka Industrial Technology Center (72) Inventor Nakanishi Mikiiku Shimaoka Prefecture Fuji City Tenma 1461-47 (72) Inventor Takahisa Sakurai 2-38-36 Oga, Shizuoka City, Shizuoka Prefecture
Claims (4)
に電流が流れる感圧性スイッチにおいて、前記一対の電
極は導電性シリコーンゲルで被包され、押圧キーの押圧
操作により導電性シリコーンゲルが歪みを生じて導電状
態と成ることを特徴とする感圧導電接点。1. In a pressure-sensitive switch in which a current flows between a pair of electrodes when a pressing key is pressed, the pair of electrodes are covered with a conductive silicone gel, and the conductive silicone gel is distorted by a pressing operation of the pressing key. A pressure-sensitive conductive contact, which is characterized by being generated and becoming conductive.
形成され、このパターン基板には前記押圧キーの下面が
直接臨むとともに、各対の電極が個別に導電性シリコー
ンゲルで被包されていることを特徴とする請求項１記載
の感圧導電接点。2. A plurality of pairs of the pair of electrodes are formed on a pattern substrate, the lower surface of the pressing key directly faces the pattern substrate, and each pair of electrodes is individually covered with a conductive silicone gel. The pressure-sensitive conductive contact according to claim 1, wherein
形成され、このパターン基板には前記押圧キーの下面が
直接臨むとともに、各対の電極がシート状の導電性シリ
コーンゲルで一緒に被包されていることを特徴とする請
求項１記載の感圧導電接点。3. A plurality of pairs of the pair of electrodes are formed on a pattern substrate, the lower surface of the pressing key directly faces the pattern substrate, and each pair of electrodes is covered with a sheet-like conductive silicone gel together. The pressure-sensitive conductive contact according to claim 1, wherein the pressure-sensitive conductive contact is provided.
ンゲルに対して繊維状のフィラーを添加して成るもので
あることを特徴とする請求項１、２または３記載の感圧
導電接点。4. The pressure-sensitive conductive contact according to claim 1, 2 or 3, wherein the conductive silicone gel is formed by adding a fibrous filler to the silicone gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3265591A JPH0520963A (en) | 1991-07-11 | 1991-07-11 | Pressure sensitive conductive contact point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3265591A JPH0520963A (en) | 1991-07-11 | 1991-07-11 | Pressure sensitive conductive contact point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0520963A true JPH0520963A (en) | 1993-01-29 |
Family
ID=17419251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3265591A Pending JPH0520963A (en) | 1991-07-11 | 1991-07-11 | Pressure sensitive conductive contact point |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0520963A (en) |
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