JPH05176903A - Silver-silver chloride electrode and its production - Google Patents
Silver-silver chloride electrode and its productionInfo
- Publication number
- JPH05176903A JPH05176903A JP3346236A JP34623691A JPH05176903A JP H05176903 A JPH05176903 A JP H05176903A JP 3346236 A JP3346236 A JP 3346236A JP 34623691 A JP34623691 A JP 34623691A JP H05176903 A JPH05176903 A JP H05176903A
- Authority
- JP
- Japan
- Prior art keywords
- silver
- silver chloride
- powder
- plate
- chloride electrode
- 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.)
- Granted
Links
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Ceramic Products (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、診療で用いられる心電
図，筋電図，脳波計等で微弱な生体電気信号を検出する
ための銀−塩化銀電極およびその製造方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver-silver chloride electrode for detecting a weak bioelectric signal in an electrocardiogram, an electromyogram, an electroencephalograph and the like used in medical care and a method for producing the same.
【０００２】[0002]
【従来の技術】図３は生体電極用の従来の銀−塩化銀電
極を示す側面図で、１は銀−塩化銀混合粉焼結体、２は
リード線、３は銀ペーストであり、従来の銀−塩化銀電
極の製造方法は、所定の比率に混合された銀と塩化銀の
混合粉を所定の形に成形，焼成して銀−塩化銀混合粉焼
結体１を形成し、その裏面に、直接リード線２の線端を
銀ペースト３にて固定して銀−塩化銀電極を形成するも
のである。2. Description of the Related Art FIG. 3 is a side view showing a conventional silver-silver chloride electrode for a biological electrode, 1 is a silver-silver chloride mixed powder sintered body, 2 is a lead wire, 3 is a silver paste, and In the method for manufacturing a silver-silver chloride electrode, the mixed powder of silver and silver chloride mixed in a predetermined ratio is molded into a predetermined shape and fired to form a silver-silver chloride mixed powder sintered body 1, and The wire end of the lead wire 2 is directly fixed to the back surface with the silver paste 3 to form a silver-silver chloride electrode.
【０００３】図４はその他の従来の銀−塩化銀電極を示
す側面図で、４は銀−塩化銀混合粉焼結体、５は銀ペー
スト、６はリード線、７はハンダであり、このその他の
従来の銀−塩化銀電極の製造方法は、所定の比率に混合
された銀と塩化銀の混合粉を所定の形に成形，焼成して
銀−塩化銀混合粉焼結体１を形成し、その裏面に、銀ペ
ースト５にて半田付け用のランドを形成後、このランド
にリード線６の線端をハンダ７にて半田付けして固定し
て銀−塩化銀電極を形成するものである。FIG. 4 is a side view showing another conventional silver-silver chloride electrode, 4 is a silver-silver chloride mixed powder sintered body, 5 is a silver paste, 6 is a lead wire, and 7 is a solder. In another conventional method for manufacturing a silver-silver chloride electrode, a mixed powder of silver and silver chloride mixed in a predetermined ratio is molded into a predetermined shape and fired to form a silver-silver chloride mixed powder sintered body 1. Then, a land for soldering is formed on the back surface thereof with silver paste 5, and the wire end of the lead wire 6 is soldered and fixed to this land with solder 7 to form a silver-silver chloride electrode. Is.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記し
た従来の銀−塩化銀電極で、直接リード線端を銀ペース
トにて銀−塩化銀の混合粉の焼結体に固定する銀−塩化
銀電極では、銀−塩化銀の混合粉の焼結体はポーラス
（海綿のように多孔質）であり、測定時に使用する電解
液が銀−塩化銀の混合焼結体に浸透してペーストまで達
するとペーストとの界面強度が弱まってしまうので、リ
ード線の取り付け強度が低いという問題があり、現在で
は実際に使用されていることは稀である。However, in the above-described conventional silver-silver chloride electrode, the lead-wire end is directly fixed to the sintered body of the mixed powder of silver-silver chloride with silver paste. Then, the sintered body of the mixed powder of silver-silver chloride is porous (porous like sponge), and when the electrolytic solution used at the time of measurement penetrates into the mixed sintered body of silver-silver chloride and reaches the paste. Since the interface strength with the paste is weakened, there is a problem that the attachment strength of the lead wire is low, and it is rarely actually used at present.
【０００５】また、銀−塩化銀の混合粉の焼結体に銀ペ
ーストにてランドを形成し、このランドにリード線端を
半田付けする銀−塩化銀電極では、ポーラスな銀−塩化
銀の混合粉の焼結体に電解液が浸透してハンダと接する
と局部電池が形成され、局部電池が形成されると、微弱
な生体電気信号を検出するための電極としては使えなく
なるという問題がある。局部電池を形成しないようにす
るためには、リード線の線端と銀−塩化銀電極を接合す
るハンダに電解液が接しないように絶縁する半田付け箇
所の完全な封入が必要であるが、従来考えられる手段で
は困難かつ作業も容易でなく、また、リード線の取り付
け強度はまだ十分ではなく、この点でも完全な封入の困
難さを増していた。Further, in a silver-silver chloride electrode in which a land is formed with a silver paste on a sintered body of a mixed powder of silver-silver chloride and a lead wire end is soldered to this land, porous silver-silver chloride is used. When the electrolytic solution penetrates into the sintered body of the mixed powder and comes into contact with the solder, a local battery is formed, and when the local battery is formed, it cannot be used as an electrode for detecting a weak bioelectric signal. .. In order to prevent the formation of a local battery, it is necessary to completely enclose the soldering point that insulates the solder that joins the wire end of the lead wire and the silver-silver chloride electrode from contact with the electrolytic solution, It is difficult and difficult to work with the conventionally conceivable means, and the mounting strength of the lead wire is not yet sufficient, which also makes the difficulty of complete encapsulation.
【０００６】本発明は、このような問題を解決するため
になされたもので、銀−塩化銀の混合粉の焼結体に浸透
する電解液がリード線を取り付けるハンダに接しないよ
うにして局部電池が形成されないようにするとともに、
リード線の取り付け強度の増加を図ることのできる銀−
塩化銀電極およびその製造方法を提供する。The present invention has been made in order to solve such a problem, and the electrolytic solution that permeates the sintered body of the silver-silver chloride mixed powder is prevented from coming into contact with the solder to which the lead wire is attached. To prevent the formation of batteries,
Silver that can increase the mounting strength of lead wires
Provided are a silver chloride electrode and a method for manufacturing the same.
【０００７】[0007]
【課題を解決するための手段】本発明者らは上記した局
部電池の形成の防止およびリード線の取り付け強度の増
加を目的に種々試作研究した結果、銀と塩化銀の混合粉
の片面に銀板を張り合わせて、この銀板の裏面にリード
線を取り付けることとすれば、ポーラスな銀と塩化銀の
混合粉の焼結体を貫通して浸透してきた電解液を銀板で
阻止できて局部電池が形成されなくなり、リード線の取
り付け強度も増加することがわかった。The inventors of the present invention have conducted various trials and researches for the purpose of preventing the formation of the above-mentioned local battery and increasing the attachment strength of the lead wire, and as a result, the silver on one surface of the mixed powder of silver and silver chloride was silver. By sticking the plates together and attaching the lead wire to the back surface of this silver plate, the silver plate can block the electrolyte that has penetrated through the sintered body of the mixed powder of porous silver and silver chloride, and the local area can be blocked. It was found that the battery was not formed and the lead wire attachment strength was increased.
【０００８】しかしながら、銀と塩化銀の混合粉と平滑
な面をもった銀板とを十分な強度で張り合わせるには約
５００℃以上の温度が必要で、この温度では融点が約４
５５℃の塩化銀が溶融してしまうため、表面安定性のた
め必要なポーラスな組織が破壊されてしまい、あまり好
ましい銀−塩化銀電極が得られなかった。そこで、さら
に試作研究した結果、銀板に予め銀粉を焼成して優れた
アンカー面とした後、この面上に銀と塩化銀の混合粉を
塗布後焼成することで、塩化銀の溶融温度以下の焼成温
度で十分な接合強度を持ち、理想に近いポーラスな組織
を持たせることができた。However, in order to bond the mixed powder of silver and silver chloride and the silver plate having a smooth surface with sufficient strength, a temperature of about 500 ° C. or higher is required, and at this temperature, the melting point is about 4 ° C.
Since the silver chloride at 55 ° C. was melted, the porous structure necessary for surface stability was destroyed, and a very preferable silver-silver chloride electrode could not be obtained. Therefore, as a result of further trial research, after baking silver powder on a silver plate in advance to form an excellent anchor surface, by coating a mixed powder of silver and silver chloride on this surface and baking it, the melting temperature of silver chloride is kept below the melting temperature. It had a sufficient bonding strength at the firing temperature of and had a porous structure close to the ideal.
【０００９】すなわち、本発明は銀板の片面に銀粉を塗
布して焼成し、この銀粉を焼成した銀板の面に、銀粉と
塩化銀粉を所定の比率で混合した粉を塗布して焼成し、
銀−塩化銀電極を製造するものである。That is, according to the present invention, silver powder is applied to one surface of a silver plate and baked, and a powder obtained by mixing silver powder and silver chloride powder at a predetermined ratio is applied and baked on the surface of the silver plate baked from this silver powder. ,
A silver-silver chloride electrode is manufactured.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を用いて説明す
る。図１は本発明の一実施例を示す銀−塩化銀電極の側
面図である。図において、８は銀板、９は銀板８の片面
に張り合わされている銀−塩化銀混合粉焼結体、１０は
銀板８の片面に銀粉を塗布して焼成することで形成され
るアンカー面である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a silver-silver chloride electrode showing an embodiment of the present invention. In the figure, 8 is a silver plate, 9 is a silver-silver chloride mixed powder sintered body stuck to one surface of the silver plate 8, and 10 is formed by applying silver powder to one surface of the silver plate 8 and firing it. Anchor surface.
【００１１】以下、本実施例の銀−塩化銀電極の製造方
法を説明する。厚さ０．１ｍｍ，巾６０ｍｍの銀板の片
面に、平均粒度２０メッシュの銀粉をドクターブレード
法により塗布した後、焼成して厚さ０．１５ｍｍの片面
にアンカー面１０をもった銀板８を製作した。次に重量
で１：１の比率の銀−塩化銀の混合粉をこの銀板８のア
ンカー面１０上に塗布し、３５０℃，３０分で焼成して
銀−塩化銀混合粉焼結体９を形成し、厚さ０．７ｍｍの
銀板／銀−塩化銀の複合体構造をもった銀−塩化銀電極
材料を製作した。The method for manufacturing the silver-silver chloride electrode of this embodiment will be described below. A silver plate having a thickness of 0.1 mm and a width of 60 mm is coated with silver powder having an average grain size of 20 mesh by a doctor blade method on one side, and then baked to have a thickness of 0.15 mm and an anchor surface 10 on one side. Was produced. Next, a mixed powder of silver-silver chloride in a ratio of 1: 1 by weight is applied on the anchor surface 10 of the silver plate 8 and baked at 350 ° C. for 30 minutes to sinter the mixed powder of silver-silver chloride 9. Was formed, and a silver-silver chloride electrode material having a silver plate / silver-silver chloride composite structure having a thickness of 0.7 mm was produced.
【００１２】図２は、上記本実施例と比較のための銀−
塩化銀電極で、圧延上がりの面のままでアンカー面を持
たない銀板１１上で上記と同じ銀−塩化銀の混合粉を同
じ条件で塗布，焼成して銀−塩化銀混合粉焼結体１２を
形成し、厚さ０．７ｍｍの同様の複合体構造をもった銀
−塩化銀電極材料を作った。これを比較例とし本実施例
と同じφ１０ｍｍのプレス打ち抜きをして、プレス打ち
抜き加工の剪断状態をもって比較とした。FIG. 2 shows silver for comparison with the present embodiment.
A silver-silver chloride mixed powder sintered body is obtained by applying the same silver-silver chloride mixed powder as above on the same conditions as above on a silver plate 11 which is a rolled surface and has no anchor surface with a silver chloride electrode and fires it. 12 was formed to make a silver-silver chloride electrode material having a similar composite structure with a thickness of 0.7 mm. Using this as a comparative example, the same φ10 mm press punching as in this example was performed, and the shearing state of the press punching was used for comparison.
【００１３】[0013]
【表１】 [Table 1]
【００１４】[0014]
【発明の効果】以上説明したように、本発明は、銀板の
片面に銀粉を塗布して焼成し、この銀粉を焼成した銀板
の面に、銀粉と塩化銀粉を所定の比率で混合した粉を塗
布した後、焼成して銀−塩化銀電極を製造するものであ
る。このような銀−塩化銀電極の製造方法によれば、銀
板と銀−塩化銀の混合焼結体との接合界面の機械的強度
を高めることができ、接合界面の機械的強度が高められ
ることで、生体電極用として供された場合、接合界面の
電気的な安定性をもつことができ、安定した電極特性を
示す電極を製造できるようになった。As described above, according to the present invention, silver powder is applied to one side of a silver plate and baked, and silver powder and silver chloride powder are mixed in a predetermined ratio on the surface of the silver plate baked from this silver powder. After applying the powder, it is baked to produce a silver-silver chloride electrode. According to such a method for producing a silver-silver chloride electrode, the mechanical strength of the joint interface between the silver plate and the mixed sintered body of silver-silver chloride can be increased, and the mechanical strength of the joint interface can be increased. As a result, when used as a bioelectrode, it is possible to have the electrical stability of the bonding interface and to manufacture an electrode that exhibits stable electrode characteristics.
【００１５】同様な理由から繰り返し使用に耐え、長寿
命をもった電極を供せられるようになった。また、この
ように製造された銀−塩化銀電極は、銀板の片面に銀−
塩化銀の混合粉が焼成されているので、銀−塩化銀の混
合粉焼結体に浸透する電解液をこの銀板で阻止すること
ができ、リード線の剥離やリード線との接合箇所に局部
電池が形成されることが防止できる。For the same reason, it has come to be possible to provide an electrode which can withstand repeated use and has a long life. In addition, the silver-silver chloride electrode produced in this manner has silver-
Since the mixed powder of silver chloride is fired, the electrolytic solution that permeates into the mixed powder of silver-silver chloride can be blocked by this silver plate. The formation of local batteries can be prevented.
【図１】本発明の一実施例を示す銀−塩化銀電極を示す
側面図である。FIG. 1 is a side view showing a silver-silver chloride electrode showing an embodiment of the present invention.
【図２】本実施例と比較のための銀−塩化銀電極を示す
側面図である。FIG. 2 is a side view showing a silver-silver chloride electrode for comparison with this example.
【図３】従来の銀−塩化銀電極を示す側面図である。FIG. 3 is a side view showing a conventional silver-silver chloride electrode.
【図４】その他の従来の銀−塩化銀電極を示す側面図で
ある。FIG. 4 is a side view showing another conventional silver-silver chloride electrode.
８ 銀板 ９ 銀−塩化銀混合粉焼結体 １０ アンカー面 8 Silver plate 9 Silver-silver chloride mixed powder sintered body 10 Anchor surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大矢 誠 東京都千代田区鍛冶町二丁目９番12号 株 式会社徳力本店内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Makoto Oya 2-9-12 Kajicho, Chiyoda-ku, Tokyo Inside the Tokuriki head office
Claims (2)
と、この銀板の粗面側に一体に張り合わされた銀−塩化
銀の混合粉の焼結体とから構成されていることを特徴と
する銀−塩化銀電極。1. A silver plate having a rough surface formed of silver powder on one surface, and a sintered body of a mixed powder of silver-silver chloride integrally bonded to the rough surface of the silver plate. A silver-silver chloride electrode.
の銀粉を焼成した銀板の面に、銀粉と塩化銀粉を所定の
比率で混合した粉を塗布して焼成することを特徴とする
銀−塩化銀電極の製造方法。2. A silver plate is coated with silver powder on one side and baked, and a powder obtained by mixing silver powder and silver chloride powder at a predetermined ratio is coated and baked on the surface of the silver plate baked with this silver powder. And a method for producing a silver-silver chloride electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34623691A JP3148316B2 (en) | 1991-12-27 | 1991-12-27 | Silver-silver chloride electrode and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34623691A JP3148316B2 (en) | 1991-12-27 | 1991-12-27 | Silver-silver chloride electrode and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05176903A true JPH05176903A (en) | 1993-07-20 |
| JP3148316B2 JP3148316B2 (en) | 2001-03-19 |
Family
ID=18382038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34623691A Expired - Lifetime JP3148316B2 (en) | 1991-12-27 | 1991-12-27 | Silver-silver chloride electrode and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3148316B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006280736A (en) * | 2005-04-01 | 2006-10-19 | Ishifuku Metal Ind Co Ltd | Silver substrate biomedical electrode and method of manufacturing the same |
| JP2006280735A (en) * | 2005-04-01 | 2006-10-19 | Ishifuku Metal Ind Co Ltd | Biomedical electrode |
-
1991
- 1991-12-27 JP JP34623691A patent/JP3148316B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006280736A (en) * | 2005-04-01 | 2006-10-19 | Ishifuku Metal Ind Co Ltd | Silver substrate biomedical electrode and method of manufacturing the same |
| JP2006280735A (en) * | 2005-04-01 | 2006-10-19 | Ishifuku Metal Ind Co Ltd | Biomedical electrode |
| JP4596957B2 (en) * | 2005-04-01 | 2010-12-15 | 石福金属興業株式会社 | Silver-based biological electrode and method for producing the same |
| JP4624160B2 (en) * | 2005-04-01 | 2011-02-02 | 石福金属興業株式会社 | Biological electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3148316B2 (en) | 2001-03-19 |
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