JPS635434B2 - - Google Patents

Info

Publication number
JPS635434B2
JPS635434B2 JP59154616A JP15461684A JPS635434B2 JP S635434 B2 JPS635434 B2 JP S635434B2 JP 59154616 A JP59154616 A JP 59154616A JP 15461684 A JP15461684 A JP 15461684A JP S635434 B2 JPS635434 B2 JP S635434B2
Authority
JP
Japan
Prior art keywords
lubricant
present
contacts
contact
black powder
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
JP59154616A
Other languages
Japanese (ja)
Other versions
JPS6131493A (en
Inventor
Kazuhisa Yoshida
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15461684A priority Critical patent/JPS6131493A/en
Publication of JPS6131493A publication Critical patent/JPS6131493A/en
Publication of JPS635434B2 publication Critical patent/JPS635434B2/ja
Granted legal-status Critical Current

Links

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  • Lubricants (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は、電磁継電器、電気スイツチ等電気機
器において、それらの電気開閉接点部分の接触性
を向上させるために、該部分に塗布して使用する
潤滑剤に関する。 〔従来の技術〕 一般に電気開閉接点は、アークの発生しない微
小電流レベルから、アーク電流領域まで、種々の
負荷レベルに亘つて使される。それにも拘らず現
用潤滑剤は、アーク放電の生起しないような低電
流レベルにおいてのみ有効であつて、高電流レベ
ル下の使用では必ずしも有効でない。高電流レベ
ルに使用されると、接点部分に潤滑剤の分解に起
因したカーボン、ないしは該カーボンと機器材料
金属の蒸発に由来する金属粉末との混合物(ブラ
ツクパウダーと呼ばれている)が生成し、接触抵
抗の増大を来し易い。 その理由は、現用潤滑剤成分が、パラフイン系
またはオレフイン系などの鎖状炭化水素であるの
で、アーク熱によつて熱分解し易く、上記ブラツ
クパウダーを形成するからである。 したがつて、電流の巾広い領域に亘つて、接点
潤滑剤の機能を満足する潤滑剤の開発が要望され
ている。 〔問題点を解決するための手段〕 本発明は、上記要望に応えるべく為されたもの
であつて、一般式 HO〔―(CH22〜4―O〕―nH で示され、nの値は3〜30程度であるポリエーテ
ルであることを特徴とする電気接点用潤滑剤であ
る。 ポリエーテルの原料としての炭素数2〜4(C2
〜4と略す)のグリコールとは、むろんエチレン
グリコール、プロピレングリコールおよびブチレ
ングリコールを指称する。炭素数5以上のグリコ
ールを排除する理由は、それらのポリエーテルを
潤滑剤とするとき、難揮発性のグラフアイト状炭
化物が生成し易いからである。 上記C2〜4を原料としたポリエーテルとは、
一般式 HO〔―(CH22〜4―O〕―nH で示され、nの値は通常3〜30程度である。nの
値が3未満では揮発し易くて潤滑剤たり得ない
し、約30以上では固体状を示し、同様に潤滑剤た
り得ない難点があるからである。 本発明潤滑剤は、上記ポリエーテルの単独また
は2種以上の混合物の何れであつて差支えない。 〔効果〕 このような本発明ポリエーテルは、これを電気
開閉接点部分に塗布して潤滑剤として使用され
る。使用時これにアーク熱が加わると、該ポリエ
ールは継ぎ手で切断し、(CH22〜4,O,OHに分
解する。むろん(CH22〜4は気化し易く、化学的
にも安定であるから、接点表面に化学作用を及ぼ
さず残るO,OHも接触抵抗の増大に直接悪影響
を及ぼさない。したがつて、アークの発生するよ
うな高電流レベルの使用においても長期に亘る潤
滑効果が得られるのである。 (実施例) 本発明者らは、下記第1表所載のポリエーテル
を、通信用小型リレーの開閉接点に塗布し、交流
50V負荷、開閉周波数2Hz、常温で開閉テストを
行つた。電流レベルは、0.01A,0.1Aおよび1Aと
した。
[Industrial Application Field] The present invention relates to a lubricant that is applied to electrical equipment such as electromagnetic relays and electric switches in order to improve the contact properties of the electrical switching contact parts. [Prior Art] Generally, electrical switching contacts are used at various load levels, from a minute current level where no arc occurs to an arc current range. Nevertheless, current lubricants are only effective at low current levels where arcing does not occur, and are not necessarily effective in use at high current levels. When used at high current levels, carbon from the decomposition of the lubricant, or a mixture of carbon and metal powder from the evaporation of equipment metals (called black powder), can form at the contacts. , which tends to increase contact resistance. The reason for this is that the currently used lubricant components are chain hydrocarbons such as paraffinic or olefinic hydrocarbons, which are easily thermally decomposed by arc heat and form the above-mentioned black powder. Therefore, there is a demand for the development of a lubricant that satisfies the function of a contact lubricant over a wide range of currents. [Means for Solving the Problems] The present invention has been made in response to the above-mentioned needs, and is represented by the general formula HO[-( CH2 ) 2~4 -O]-nH, where n is The lubricant for electrical contacts is characterized by being a polyether having a value of about 3 to 30. Carbon number 2 to 4 (C2
Glycol (abbreviated as ~4) refers, of course, to ethylene glycol, propylene glycol, and butylene glycol. The reason for excluding glycols having 5 or more carbon atoms is that when these polyethers are used as lubricants, hardly volatile graphite-like carbides are likely to be formed. Polyethers made from the above C2-4 are:
It is represented by the general formula HO[-( CH2 ) 2-4 -O]-nH, and the value of n is usually about 3 to 30. This is because if the value of n is less than 3, it will easily volatilize and cannot be used as a lubricant, while if it is about 30 or more, it will be in a solid state and similarly cannot be used as a lubricant. The lubricant of the present invention may be any one of the above polyethers or a mixture of two or more thereof. [Effects] The polyether of the present invention is used as a lubricant by applying it to electrical switching contact parts. When arc heat is applied to it during use, the polyale is cut at the joint and decomposed into (CH 2 ) 2-4 , O, and OH. Of course, since (CH 2 ) 2 to 4 are easily vaporized and chemically stable, the remaining O and OH do not exert any chemical action on the contact surface and do not have a direct adverse effect on the increase in contact resistance. Therefore, a long-term lubrication effect is obtained even when used at high current levels where arcing occurs. (Example) The present inventors applied the polyether listed in Table 1 below to the opening/closing contacts of a small relay for communication, and
Opening/closing tests were conducted at room temperature with a 50V load and a switching frequency of 2Hz. The current levels were 0.01A, 0.1A and 1A.

【表】【table】

【表】 テスト結果は第2表記載の通りであつた。 なお、比較例としては、炭素数16のパラフイン
H―(CH216―Hを用い、その成績も同表中に
一括表示した。
[Table] The test results were as shown in Table 2. As a comparative example, paraffin H-( CH2 ) 16 -H having 16 carbon atoms was used, and the results are also shown in the same table.

【表】 ○:ブラツクパウダー 発生なし。
△: 〃 発生する。
×: 〃 多量付着す。
また、ポリオキシプロピレンアルキルエーテル
を用いたときには、アルキル鎖が接点障害物を作
り易く、したがつて大電流下では、接点性能を悪
化させることが確認された。本発明はこの問題を
解決する。 第2表の成績からわかるように、比較例たる
C16パラフインが、電流レベル0.01Aで、わずか
5000回の開閉でもブラツクパウダーの発生を見る
に対し、本発明に係る実施例1〜4のポリエーテ
ルでは、1Aという高電流レベル、しかも1万回
という高開閉回数でも、その発生が見ないか(実
施例1,4)、ようやくその発生を見る(実施例
2,3)にとゞまるのである。 これによつて、本発明に係るポリエーテルが、
電流の巾広い領域にわたつて、如何にすぐれた電
気接点、とくにリレー接点、スイツチ接点用潤滑
剤であるか明白である。
[Table] ○: Black powder did not occur.
△: 〃 Occurs.
×: A large amount adheres.
Furthermore, when polyoxypropylene alkyl ether was used, it was confirmed that the alkyl chains tend to form contact obstructions, which deteriorates the contact performance under large currents. The present invention solves this problem. As can be seen from the results in Table 2, this is a comparative example.
C16 paraffin has a low current level of 0.01A.
While black powder is observed to occur even after 5,000 openings and closings, the polyethers of Examples 1 to 4 according to the present invention do not generate black powder even at a high current level of 1A and a high number of openings and closings of 10,000 times. (Examples 1 and 4), and we finally see the occurrence (Examples 2 and 3). This allows the polyether according to the present invention to
It is clear how excellent the lubricant is for electrical contacts, especially relay contacts and switch contacts, over a wide range of currents.

Claims (1)

【特許請求の範囲】 1 一般式 HO〔―(CH22〜4―O〕―nH で示され、nの値は3〜30程度であるポリエーテ
ルであることを特徴とする電気接点用潤滑剤。
[Claims] 1. For electrical contacts characterized by being a polyether represented by the general formula HO[-(CH 2 ) 2-4 -O]-nH, where n is approximately 3 to 30. lubricant.
JP15461684A 1984-07-24 1984-07-24 Lubricant for electrical contact Granted JPS6131493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15461684A JPS6131493A (en) 1984-07-24 1984-07-24 Lubricant for electrical contact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15461684A JPS6131493A (en) 1984-07-24 1984-07-24 Lubricant for electrical contact

Publications (2)

Publication Number Publication Date
JPS6131493A JPS6131493A (en) 1986-02-13
JPS635434B2 true JPS635434B2 (en) 1988-02-03

Family

ID=15588075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15461684A Granted JPS6131493A (en) 1984-07-24 1984-07-24 Lubricant for electrical contact

Country Status (1)

Country Link
JP (1) JPS6131493A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212314A (en) * 1989-12-28 1991-09-17 Yanmar Agricult Equip Co Ltd Boxing device for fruit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869959A (en) * 1971-12-28 1973-09-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869959A (en) * 1971-12-28 1973-09-22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212314A (en) * 1989-12-28 1991-09-17 Yanmar Agricult Equip Co Ltd Boxing device for fruit

Also Published As

Publication number Publication date
JPS6131493A (en) 1986-02-13

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