JPH044297A - 電気摺動接触器用潤滑剤 - Google Patents

電気摺動接触器用潤滑剤

Info

Publication number
JPH044297A
JPH044297A JP2106719A JP10671990A JPH044297A JP H044297 A JPH044297 A JP H044297A JP 2106719 A JP2106719 A JP 2106719A JP 10671990 A JP10671990 A JP 10671990A JP H044297 A JPH044297 A JP H044297A
Authority
JP
Japan
Prior art keywords
metal oxide
lubricant
parts
grease
base oil
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
Application number
JP2106719A
Other languages
English (en)
Inventor
Takeshi Kojima
猛 小島
Sugako Ootake
大嶽　崇雅子
Eigo Mukogasa
向笠　英五
Kikuo Yasuzaki
保崎　喜久男
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.)
NIPPON KOUYU KK
Tokai Rika Co Ltd
Original Assignee
NIPPON KOUYU KK
Tokai Rika Co 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 NIPPON KOUYU KK, Tokai Rika Co Ltd filed Critical NIPPON KOUYU KK
Priority to JP2106719A priority Critical patent/JPH044297A/ja
Priority to US07/689,627 priority patent/US5156756A/en
Publication of JPH044297A publication Critical patent/JPH044297A/ja
Pending legal-status Critical Current

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    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
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    • C10M117/04—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen containing hydroxy groups
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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、接点開閉時にアークを発生する大電流、特
に数十から数百アンペアの電気摺動接触器、例えば電圧
１２Ｖ以上で用いる摺動スイッチ接点摺動部や、電車の
トロリー線摺動部の摩耗と焼損を効果的に防止する潤滑
剤（グリースやワックス）に関する。
従来の技術 この種の電気摺動接触器の接点は１２Ｖ以上の大電流開
閉、高圧大電流摺動接触のためスイッチ開閉時、または
トロリー線離線時に極めて高温の電気アークを発生する
。この様な使用条件（大電流、アーク発生、通電摺動）
では接点は導電率が大きくて比較的硬い銅合金が使用さ
れる。この銅合金には硬さや耐熱性を上げるため各種の
金属が少量配合されたものが多い。これらの金属のなか
には高温で水素分子の吸着に対して活性な外殻電子構造
ｄ６〜ｄ１０の金属（Ｆｅ、　Ｎｉ、　Ｃｕ、　Ｃｏ、
Ｚｎ、Ａｇ）や金属酸化物が高温で水素分子の吸着に対
して活性なアルカリ土類金属（Ｍｇ、　Ｃａ、　ｃｄ、
　Ｚｎ）が配合されている。また銅の酸化物は高温で油
や石けんの酸化触媒の働きがある。上記構成物からなる
電気摺動接触器を使用すると接点摩耗粉末を生じ、また
スイッチ開閉部、トロリー線離線部ではアークが発生し
、この高温で、摩耗金属酸化物粉末や接点金属蒸気は接
点面に塗布されている潤滑剤の油やワックス、有機金属
石けんから水素を奪い、これを分解気化消失させる（例
えば、ポリエーテル系基油）か、炭化させる（例えば、
炭化水素系基油）。
また、銅の酸化物は高級脂肪酸金属塩（例えば、ステア
リン酸すチウム石けん等）の酸化劣化（フェス化）など
も進める。
従って、最も一般的な潤滑剤である潤滑グリース（例え
ば、ポリエーテル系基油や炭化水素系基油のステアリン
酸すチウム石けんグリース）などは上記の用途には使用
中グリースが消失し、その結果、摩耗が増加するため適
当でない。ステアリン酸すチウム石けん等の高級脂肪酸
の金属石けんの替わりにベントンなどの無機系の充填剤
を用いたものは機械的摩耗が大きく、良い潤滑効果を示
さない。
上記の問題点は本件出願人の先の出願に関わるグリース
組成物（特開平ｌ−１８２３９７）にも見られ、銅接点
１４Ｖ　　１８０Ｗ開閉の摺動スイ。
チの潤滑グリースとして基油かポリエーテル系と炭化水
素系の混合物を用いた場合、開閉回数を重ねるとグリー
スが消失し、しかも、アークが発生する接点遮断部近辺
の絶縁体表面に接点の摩耗粉末が付着成長してスイッチ
の絶縁性か低下する。
このような問題を解決するために、本件出願人はさらに
、該グリース組成物を銅系摺動接点のスイッチに使用す
る場合の耐摩耗性の改良に係わる出願をおこなったが（
特願平２−１４４５３号）、該出願は特定のグリース組
成物のみを対象とするので、−数的でない。
発明が解決しようとする課題 本発明者は、初め摺動スイッチの接点の一つに微量のＳ
ｎが均一に分散されている銅合金を用いると、スイッチ
の繰返耐久試験を重ねても、これに塗布した先願（特開
平１−１８２３９７）のグリースが消失せず、スイッチ
の摩耗も少なく、しかも摩耗粉末がＳｎがない場合に比
べ極めて微細になり、スイッチの寿命が伸びるという知
見を得、これについてさきに出願したかく特願平２−１
４４５３号）、グリースを他のαオレフィン基油ステア
リン酸リチウム石けん、ポリオールエステル基油−ベン
トン石けん、と変えても同様の効果が得られ、また、Ｃ
ｕ合金にＦｅなどが配合されるとより多くのＳｎ配合量
が必要なことが判明した。
アーク熱が照射される接点遮断部ではＳｎとＣｕの摩耗
酸化粉末やアーク中の蒸気は触媒として活性になり得る
。本発明者は、先の水素分子吸着によると考えられるグ
リースの分解や劣化をこのＳｎＯ２が効果的に防止して
いるのではないかと推定し、この化合物をグリースに均
質に配合することにより前記問題点が解決され、予想し
た効果を得られることを究明した。
この発明は、接点開閉時アークを発生する大電流、特に
数十から数百アンペアの電気摺動接触器、例えば、電圧
１２Ｖ以上で用いる摺動スイッチ接点摺動部や、電車の
トロリー線摺動部の摩耗と焼損を効果的に防止する潤滑
剤であって、先の特願平２−１４４５３号に係わる組成
物とは組成の異なる電気摺動接触器用潤滑剤を提供する
ためになされたものである。
課題を解決するための手段 即ち本発明は、炭化水素基油および／またはポリエーテ
ル系合成油および／またはポリエステル合成油を基油と
し、高級脂肪酸金属塩を増粘剤とするグリース組成物ま
たは合成ワックス１００重量部に、特定のｎ型半導体金
属酸化物微粉末および／または高温空気中で該金属酸化
物に変化する物質を該金属酸化物に換算して０，０２〜
２重量部およびアルキルホスホン酸系界面活性剤０．０
５〜３重量部を配合してなる電気摺動接触器用潤滑剤に
関する。
本発明に使用するグリースの基油としては、ポリエーテ
ル系合成油（例えば、ポリアルキレン合成油、ジフェニ
ルエーテル系合成油等）、エステル油（例エバ、ヒンダ
ードアルコール脂肪酸エステル等）、炭化水素油（例え
ば、αオレフイン合成油、エチレン−αオレフイン合成
油、精製鉱油等）などが挙げられる。
高級脂肪酸金属塩としては、例えば、ステアリン酸すチ
ウム石けん、ハイドロオキシステアリン酸すチウム石け
んおよびステアリン酸のリチウムもしくはカルシウムコ
ンプレックス石けんなどが挙げられる。
また、本発明に使用される好ましいワックスとしては、
フィシャー・トロプシュ・ワックスおよび／またはポリ
エチレンワックス等のトロリー線潤滑剤として使用され
ているものが例示される。
本発明に使用するｎ型半導体酸化物としてはＳｎ○、の
他、Ｔｉｅ、、ＺｎＯ，ＶｙＯｓ等が挙げられるが、こ
の中で高温でエタノール等の脱水素触媒となるＺｎＯ，
脱水触媒となるＶ、Ｏ，については除外し、ＳｎＯ，ま
たはＳｎＯ，とＴｉｅ、の混合物が適当である。また、
高温でこれらの酸化物に変化する化合物または金属粉末
でもよい。
上記のｎ型半導体酸化物の粒径は通常１μ以下、好まし
くは０．３μ以下であり、配合量は上記グリースまたは
ワックス１００重量部に対して００２〜２重量部である
。この配合量が０．０２より少ないと本発明の初期の目
的を十分に達成することができず、また、２重量部より
も多くなると繰り返し使用を重ねるとグリースは粘りか
強くなり、良い効果が得られない。
本発明に使用するアルキルホスホン酸系界面活性剤トし
は［セパール４４１−１００Ｊおよび［セバールＢ５６
６ｊ（中京油脂株式会社市販品）等が例示される。ホス
ホン酸系界面活性剤の配合量は、上記のグリース組成物
または合成ワックス１００重量部に対して０．０５〜３
重量部、好ましくは０．０５〜１重量部であり、０．０
５重量部以下の場合には、その効果が少なく、また、３
重量部以上の場合には、高温腐食環境でのホスホン酸に
よる銅板腐食が進む傾向にある。
本発明によるグリースには上記の配合成分のほかに、所
望によりさらに常套の添加剤、例えば、酸化防止剤など
を適宜配合しても良い。
住戸 本発明による潤滑剤を大電流摺動スイッチに使用した場
合、次の二つの機能により、犬ｉ流開閉アーク発生下の
使用条件においても潤滑剤の分解（消失）や劣化（炭化
）が防止され、この潤滑剤を使用した電気接触器の寿命
を伸ばす。第一の機能は、アークの発生の著しい部分で
の導電性微小粉末の局所付着防止機能である。例えば、
摺動スイッチの場合、接点遮断部で発生するＣｕ＋１プ
ラズマおよびｐ型半導体であるＣｕ、ＯやＡｇｔＯなと
の接点摩耗微粉末は、従来のグリースを使用すると、接
点摺動直後の接点遮断部のグリース塗布表面に付着し、
スイッチの絶縁体の導体化を引き起こし、また、アーク
熱で加熱の著しい接点遮断部ではグリースが分解消失し
、接点の摩耗を加速する（例えば、以下の比較例２参照
）。
本発明による潤滑剤を使用する場合には、この様な減少
は現れない。例えば、実施例２の場合のように、グリー
スの消失も接点摩耗粉末の付着もない。このような効果
が得られる理由は、Ｃｕ＋１やＣｕｔ○などのｐ型半導
体は電子不足微粒子で、アルキルホスホン酸系界面活性
剤によって均一にグリース中に分散されている電子過剰
のｎ型半導体であるＳｎ○６等に吸着されてグリース中
に分散されるため、これらが接点遮断部に付着して導電
体皮膜となり、グリースの分解気化を防止するためと考
えられる（Ｃｕ、Ｏは高温でグリコールの分解酸化触媒
となる）。
本発明による潤滑剤の第二の機能は、基油やワ。
クス等の炭化によって生成する煤をＣＯｔに酸化する触
媒としての機能である。即ち、従来のグリースの基油、
特に炭化水素系基油やワックス等はアーク熱をうけると
炭化して煤となり、該煤が絶縁体上、特に接点遮断部近
辺に付着し、例えば、摺動スイッチの絶縁劣化をもたら
すが（例えば、以下の比較例１参照）、本発明による潤
滑油を使用する場合には、基油やワックス等の炭化物は
ＳｎＯ，等の作用によってＣＯ！に酸化されるので、炭
化物付着に起因する絶縁劣化は効果的に抑制される。例
えば、以下の実施例１の場合には、比較例１の場合に比
べて、ＳｎＯ，を０．３重量％配合することによって、
絶縁劣化は約１７５に改良される。
以下、本発明を実施例によって説明する実施例１〜３ 表−１に示す配合式によって摺動スイッチ用グリース１
〜３を調製した。
一方、第２図の模式的平面図に示すような試験用摺動ス
イッチを作成した。第２図において（ｌ゛）はガラス繊
維を配合したポリアミド６６を用いて成形した絶縁体を
示し、（２′）および（２”）はタフピッチ銅板形態の
固定接点を示し、（３゛）はエアーギャップ（０，５０
１１１）を示す。
該摺動スイッチを、第３図の模式的断面図に示すような
スイッチ耐久性能試験装置に装着し、スイッチの摺動面
上に前記のグリース１．２または３を塗布した後、該ス
イッチをＤＣ１４Ｖで１８０Ｗランプ負荷の条件下にお
いて５万回転開閉させて絶縁抵抗値と回転開閉数との関
係を求め、結果を表−１および第４図〜第６図に示す。
なお、絶縁抵抗値は、第２図の遮断部から３１１Ｉｌの
点と固定接点間において、５００Ｖメガ−で測定した。
第３図において、（１゛）、（２°）、（２”）および
（４゛）は第２図の場合と同意義であり、（６）はモー
タを記す。
比較例１〜３ 実施例１〜３に準拠し、表〜１に示す配合処方によって
調製したグリースに２゛または３′を摺動面に塗布した
摺動スイッチの耐久性能を調べ、結果を表１および第７
図〜第９図に示す。
（以下、余白） α　　　　０ シ　　　Σ 発明の効果 本発明による潤滑剤は、アークか発生する電気摺動接触
器の通電部およびチャックリング部や接点開閉部（アー
ク発生部）に適用しても消失や劣化を受は難い。従って
、本発明による潤滑剤を最小アーク電圧（Ｃｕでほぼ１
２Ｖ前後）以上の電圧か印加される電気摺動接触器、例
えば、自動車用大電流摺動スイッチや、離線時にアーク
を発生する電車のトロリー線摺動部に適用すれば従来の
潤滑剤劣化に起因する適用機器の摩耗の問題点が解決さ
れ、これらの機器の長寿命化、高信頼性化、小型化の要
請に十分応えることができる。
【図面の簡単な説明】
第１図は、摺動スイッチの一態様を示す模式的断面図で
ある。 第２図は、試験用摺動スイッチの模式的平面図である。 第３図は、スイッチ耐久性能試験装置の模式的断面図で
ある。 第４図〜第９図は実施例および比較例において作製した
摺動スイッチの絶縁抵抗と回転開閉数との関係を示すグ
ラフである。 （１）はスイッチ絶縁体、（２）は固定接点、（３）は
エアキャップ、（４）は可動接点、（１“）はスイ。 チ絶縁体、（２°）および（２”）は固定接点、（４°
）は可動接点、（６）はモータを示す。 特許出願人　株式会社東海理化電機製作所　はか１名代
理人弁理士青山　葆　はか１名 第１図 第３図 味 味

Claims (1)

  1. 【特許請求の範囲】 １、炭化水素基油および／またはポリエーテル系合成油
    および／またはポリエステル合成油を基油とし、高級脂
    肪酸金属塩を増稠剤とするグリース組成物または合成ワ
    ックス１００重量部に、特定のｎ型半導体金属酸化物微
    粉末および／または高温空気中で該金属酸化物に変化す
    る物質を該金属酸化物に換算して０．０２〜２重量部お
    よびアルキルホスホン酸系界面活性剤０．０５〜３重量
    部を配合してなる電気摺動接触器用潤滑剤。 ２、特定のｎ型半導体金属酸化物が、粒径１μ以下の二
    酸化錫および／または酸化チタンである第１項記載の潤
    滑剤。
JP2106719A 1990-04-23 1990-04-23 電気摺動接触器用潤滑剤 Pending JPH044297A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2106719A JPH044297A (ja) 1990-04-23 1990-04-23 電気摺動接触器用潤滑剤
US07/689,627 US5156756A (en) 1990-04-23 1991-04-23 Lubricant for an electrical sliding contactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2106719A JPH044297A (ja) 1990-04-23 1990-04-23 電気摺動接触器用潤滑剤

Publications (1)

Publication Number Publication Date
JPH044297A true JPH044297A (ja) 1992-01-08

Family

ID=14440764

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (2)

Country Link
US (1) US5156756A (ja)
JP (1) JPH044297A (ja)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08188788A (ja) * 1995-01-13 1996-07-23 Hitachi Ltd 電動機
JPH09169989A (ja) * 1995-12-20 1997-06-30 Nippon Seiko Kk グリース組成物
US6607750B2 (en) 1999-09-16 2003-08-19 Rhodia Inc. Directly compressible acetaminophen compositions
JP2004002696A (ja) * 2003-02-24 2004-01-08 Nsk Ltd グリース組成物
JP2010001473A (ja) * 2008-06-23 2010-01-07 Afton Chemical Corp 滑斜面に適用するための摩擦調整剤

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JP3173027B2 (ja) * 1991-03-19 2001-06-04 株式会社日立製作所 物体の表面処理法，表面処理剤，表面処理された物品，部品及びそれらを備えた装置
DK0851908T3 (da) * 1995-06-07 2003-08-25 Lee County Mosquito Control Di Smøremiddelsammensætning og fremgangsmåde
US20020198114A1 (en) * 1995-06-07 2002-12-26 Lee County Mosquito Control District Lubricant compositions and methods
US7767631B2 (en) * 1995-06-07 2010-08-03 Lee County Mosquito Control District Lubricant compositions and methods
DE19653589B4 (de) * 1995-12-20 2006-01-05 Nsk Ltd. Wälzlager
WO2000043470A1 (en) * 1999-01-22 2000-07-27 Nalco Chemical Company Water based metal working composition
JP2002037988A (ja) * 2000-07-28 2002-02-06 Oiles Ind Co Ltd 摺動部材用樹脂組成物および摺動部材
WO2004018594A1 (ja) * 2002-08-21 2004-03-04 Citizen Watch Co., Ltd. 精密機器用グリース組成物およびこれを用いた時計
JP2006249376A (ja) * 2005-03-14 2006-09-21 Kyodo Yushi Co Ltd ハーネス用グリース組成物
US20120004153A1 (en) 2010-06-30 2012-01-05 Chevron U.S.A. Inc. Lithium Complex Grease with Improved Thickener Yield
FR2982994B1 (fr) 2011-11-21 2014-01-10 Sc2N Sa Commutateur electrique a contact frottant
CN110079374B (zh) * 2019-05-28 2021-11-19 清研高装科技(天津)有限公司 一种新型铁路道岔转辙机润滑脂及制备方法

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JPS5130266B2 (ja) * 1971-08-17 1976-08-31
US3928214A (en) * 1972-04-25 1975-12-23 Hitachi Ltd Grease composition
US4177316A (en) * 1977-08-25 1979-12-04 Schunk & Ebe Gmbh Impregnated carbon brush for electrical machinery
US4256489A (en) * 1979-01-10 1981-03-17 The Boeing Company Low wear high current density sliding electrical contact material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08188788A (ja) * 1995-01-13 1996-07-23 Hitachi Ltd 電動機
JPH09169989A (ja) * 1995-12-20 1997-06-30 Nippon Seiko Kk グリース組成物
US6607750B2 (en) 1999-09-16 2003-08-19 Rhodia Inc. Directly compressible acetaminophen compositions
JP2004002696A (ja) * 2003-02-24 2004-01-08 Nsk Ltd グリース組成物
JP2010001473A (ja) * 2008-06-23 2010-01-07 Afton Chemical Corp 滑斜面に適用するための摩擦調整剤

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