JPS60245874A - Conductive oil seal - Google Patents
Conductive oil sealInfo
- Publication number
- JPS60245874A JPS60245874A JP59103189A JP10318984A JPS60245874A JP S60245874 A JPS60245874 A JP S60245874A JP 59103189 A JP59103189 A JP 59103189A JP 10318984 A JP10318984 A JP 10318984A JP S60245874 A JPS60245874 A JP S60245874A
- Authority
- JP
- Japan
- Prior art keywords
- oil seal
- conductive
- rubber
- conductive rubber
- rubber composite
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、自動車等に装着されるころがり軸受。[Detailed description of the invention] (Industrial application field) The present invention relates to a rolling bearing installed in automobiles and the like.
と併用されるオイルシールに関し、更に詳しくは、導電
性材料をもつで形成された導電性オイルシールに関する
。The present invention relates to an oil seal that is used in combination with an electrically conductive oil seal, and more particularly to an electrically conductive oil seal formed of an electrically conductive material.
（従来の技術）
自動車の車輪に対する回転駆動手段には、第１図に例示
するように、ハウジング１及び回転軸２の間に介挿され
たころがり軸受３が使用されて、該ころがり軸受３に対
重る潤滑剤のシール手段として、ゴム状弾性材、料をも
って製せられ、回転側周面と弾性的に接触して揺動する
シール部片５を備えるオイルシール４が使用されている
。(Prior Art) As illustrated in FIG. 1, a rolling bearing 3 inserted between a housing 1 and a rotating shaft 2 is used as a rotational drive means for the wheels of an automobile. As a sealing means for the heavy lubricant, an oil seal 4 is used, which is made of a rubber-like elastic material and includes a seal piece 5 that swings in elastic contact with the rotating side circumferential surface.
（発明が解決しようとする問題点）
上記した軸受構造においては、ころがり軸受３か、回転
中に電気的絶縁状態に陥り、それに伴い、ころがり軸受
内における静電気の放電現象が惹起されるために、これ
を解決する手段を講じることが要求されている。(Problems to be Solved by the Invention) In the bearing structure described above, the rolling bearing 3 falls into an electrically insulated state during rotation, and as a result, electrostatic discharge phenomenon occurs within the rolling bearing. There is a need to take measures to solve this problem.
一方、ころがり軸受３に対する潤滑剤の漏洩を阻止する
手段として併用されているオイルシール４は、ゴム様弾
性材料をもって製せられ、回転側の周面に弾性的に接触
してシール作用をなすシール部片５が電気的な絶縁性を
示（ので、このオイルシールを経由する導電回路の形成
を期待づることができない。On the other hand, the oil seal 4, which is also used as a means for preventing leakage of lubricant from the rolling bearing 3, is made of a rubber-like elastic material, and is a seal that elastically contacts the rotating side circumferential surface to perform a sealing action. Piece 5 exhibits electrical insulation (therefore, formation of a conductive circuit via this oil seal cannot be expected).
本発明は、上記したころがり軸受内における電気的絶縁
状態の発生に伴うトラブルを防止することを目的とする
ものである。An object of the present invention is to prevent troubles caused by the occurrence of the electrically insulated state within the rolling bearing described above.
（問題点を解決するための手段）
本発明は、上記した従来技術による回転支持部における
放電現象の問題に鑑み、ころがり軸受のための潤滑剤の
漏洩阻止手段として併設されるオイルシールに導電性を
付与することにより、ころがり軸受及びオイルシールを
介挿されるハウジングとシャフトの間に、オイルシール
を経由する導電回路を形成させて、ころがり軸受内にお
ける放電現象を防止するものである。(Means for Solving the Problems) In view of the above-mentioned problem of the discharge phenomenon in the rotating support part according to the prior art, the present invention provides an electrically conductive oil seal installed as a means for preventing leakage of lubricant for a rolling bearing. By providing this, a conductive circuit via the oil seal is formed between the housing and the shaft into which the rolling bearing and the oil seal are inserted, thereby preventing electrical discharge within the rolling bearing.
オイルシールに対する導電性の付与は、オイルシールの
ゴム部分を導電性を示すゴム組成物を用いて成形するか
、或いは通常の組成によるゴム材料により成形されたゴ
ム部分の表面に導電性を示す組成のゴム材料による表面
被覆層を設定づることによりなされる。To impart electrical conductivity to an oil seal, the rubber portion of the oil seal is molded using a rubber composition that exhibits conductivity, or the surface of the rubber portion that is molded from a rubber material having a normal composition is formed with a composition that exhibits conductivity. This is done by setting a surface coating layer of rubber material.
導電性を示すゴム材料の組成としては、例えばニトリル
ゴム、弗素ゴム等の合成ゴム１００重量部に対し、２０
〜６０重量部、成形性の面から、好ましくは３０〜５０
の重量部のグラファイト及び１０〜８０重量部、好まし
くは４０〜６０重量部のカーボンブラックを配合したも
のが良好な導電性を示し、導電性を確実にづるためには
、カーボンブラックとしてアセチレブラックもしくはケ
ッチンブラックを使用することが好ましく、これらを使
用する場合は、カーボン量が少量であっても良好へ導電
性が得られる。カーボンブラックに代えて、金属粉又は
、例えば、酸化鉄、硫化亜鉛、硫化銅等の金属化合物の
微粉、もしくはカーボン短ｍ維、メタライズド短繊維等
を用いることもできる。The composition of the conductive rubber material is, for example, 20 parts by weight for 100 parts by weight of synthetic rubber such as nitrile rubber or fluorine rubber.
~60 parts by weight, preferably 30 to 50 parts by weight from the viewpoint of moldability
Parts by weight of graphite and 10 to 80 parts by weight, preferably 40 to 60 parts by weight of carbon black exhibit good conductivity. Alternatively, it is preferable to use Kettin black, and when these are used, good conductivity can be obtained even if the amount of carbon is small. Instead of carbon black, metal powder or fine powder of a metal compound such as iron oxide, zinc sulfide, copper sulfide, carbon short fibers, metallized short fibers, etc. can also be used.
通常のゴム組成物を用いて成形したオイルシールに対し
、導電性を備えるゴム組成物による表面被覆層を施す手
段としては、ゴム部分の成形に先だって、通常の組成に
よるゴム材料及び導電性組成によるゴム材料を配置して
、二層成形をするか、通常のゴム材料により成形された
ゴム部分の被覆対象面を研磨又はスパッタエツチング等
の方法により粗になした後に、液状の導電性ゴム組成物
をスプレー又は刷手塗りにより積層する方法が有効゛で
ある。As a means of applying a surface coating layer of a conductive rubber composition to an oil seal molded using a normal rubber composition, prior to molding the rubber part, a rubber material of a normal composition and a conductive composition are applied. After arranging the rubber material and performing two-layer molding, or roughening the surface to be coated of a rubber part molded from a normal rubber material by a method such as polishing or sputter etching, a liquid conductive rubber composition is formed. An effective method is to laminate the material by spraying or hand-painting with a brush.
（作用）
上記したように、導電性を備えるゴム組成物により成形
されるか、もしくは表面被覆層を形成された導電性オイ
ルシールを用いたころがり軸受構造においては、ころが
り軸受を介挿されるハウジングと回転軸が、導電性オイ
ルシールにより電気的に接続される。(Function) As described above, in a rolling bearing structure using a conductive oil seal molded from a conductive rubber composition or having a surface coating layer formed thereon, the housing into which the rolling bearing is inserted is A rotating shaft is electrically connected by a conductive oil seal.
（実施例）
導電性ゴム組成物の配合の一例として下表の組成により
材料を用いて第１図に示すオイルシールを成形したとこ
ろ、良好な導電性が得られた。(Example) As an example of the formulation of a conductive rubber composition, an oil seal shown in FIG. 1 was molded using materials according to the composition shown in the table below, and good conductivity was obtained.
第２図の実施例は、ゴム組成物によるシール部片５のう
ち主リップ６の摺動側表面層及びダストリップ部７に導
電性ゴム組成物を用いて、ハウジングと回転軸とを金属
板材製補強環状及び導電性ゴム組成物製の主リップ表面
層及びダストリップにより電気的に接続させたものであ
る。In the embodiment shown in FIG. 2, a conductive rubber composition is used for the sliding side surface layer of the main lip 6 and the dust lip part 7 of the seal member 5 made of a rubber composition, and the housing and the rotating shaft are made of metal plate material. electrically connected by a reinforced annular main lip surface layer and a dust lip made of a conductive rubber composition.
（効果）
本発明による導電性オイルシールを併設された軸受構造
においては、ころがり軸受を介挿されるハウジングと回
転軸が、導電性オイルシールにより、電気的に接続され
るので、ころがり軸受内部にお（プる放電現象が完全に
防止される。(Effects) In the bearing structure equipped with the conductive oil seal according to the present invention, the housing into which the rolling bearing is inserted and the rotating shaft are electrically connected by the conductive oil seal, so that the inside of the rolling bearing is (The drop-out discharge phenomenon is completely prevented.
第１図は、本発明の対象となる軸受部の構造を示す断面
図、第２図は、本発明の一実施態様を示す部分断面図で
ある。
１・・・ハウジング、 ２・・・回転軸、 ３・・・こ
ろがり軸受、 ４・・・オイルシール、５・・・シール
部片、 ６・・・主リップ、７・・・ダストリップ部。
特許出願人
日本オイルシール工業株式会社
第７図FIG. 1 is a cross-sectional view showing the structure of a bearing section to which the present invention is applied, and FIG. 2 is a partial cross-sectional view showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Housing, 2... Rotating shaft, 3... Rolling bearing, 4... Oil seal, 5... Seal piece, 6... Main lip, 7... Dust lip part. Patent applicant: Japan Oil Seal Industry Co., Ltd. Figure 7
Claims (1)
ール。 ２、導電性ゴム組成物が、ゴム１００重量部に対し、１
０〜８０重量部のカーボンブラックと、２０〜６０重量
部のグラファイトとを含有している特許請求の範囲第１
項記載の導電性オイルシール。 ３、導電性ゴム組成物がカーボンブラックの代りに金属
粉、金属化合物の微粉、カーボン短１！維又はメタライ
ズド短繊維を含有している特許請求の範囲第２項記載の
導電性オイルシール。 ４、全ゴム部分が導電性ゴム組成物で形成されている特
許請求の範囲第１項記載の導電性オイルシール。 ５、ゴム部分の表面に、導電性ゴム材料による表面被覆
層を付されてなる特許請求の範囲第１項に記載の導電性
オイルシール。[Claims] 1. A conductive oil seal formed from a conductive rubber composition. 2. The conductive rubber composition contains 1 part by weight per 100 parts by weight of rubber.
Claim 1 containing 0 to 80 parts by weight of carbon black and 20 to 60 parts by weight of graphite.
Conductive oil seal as described in section. 3. Instead of carbon black, the conductive rubber composition uses metal powder, fine metal compound powder, and short carbon! 3. The conductive oil seal according to claim 2, which contains short fibers or metallized short fibers. 4. The conductive oil seal according to claim 1, wherein the entire rubber portion is formed of a conductive rubber composition. 5. The conductive oil seal according to claim 1, wherein the surface of the rubber portion is provided with a surface coating layer made of a conductive rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59103189A JPH065110B2 (en) | 1984-05-22 | 1984-05-22 | Conductive oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59103189A JPH065110B2 (en) | 1984-05-22 | 1984-05-22 | Conductive oil seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60245874A true JPS60245874A (en) | 1985-12-05 |
| JPH065110B2 JPH065110B2 (en) | 1994-01-19 |
Family
ID=14347570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59103189A Expired - Lifetime JPH065110B2 (en) | 1984-05-22 | 1984-05-22 | Conductive oil seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065110B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192486A (en) * | 1992-12-22 | 1994-07-12 | Kureha Erasutomaa Kk | Conductive rubber |
| US5863135A (en) * | 1996-02-05 | 1999-01-26 | Aktieboalget Skf | Rolling bearing |
| JP2003083454A (en) * | 2001-09-13 | 2003-03-19 | Tsurumi Mfg Co Ltd | Rotary main shaft corrosion prevention device for underwater rotating machine |
| JP2012097213A (en) * | 2010-11-04 | 2012-05-24 | Nok Corp | Nitrile rubber composition |
| CN104870870A (en) * | 2012-12-14 | 2015-08-26 | Nok株式会社 | Sealing device |
| WO2019105606A1 (en) * | 2017-11-28 | 2019-06-06 | Carl Freudenberg Kg | Seal arrangement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS502161A (en) * | 1973-05-14 | 1975-01-10 | ||
| JPS553375A (en) * | 1978-12-27 | 1980-01-11 | Taiho Kogyo Co Ltd | Slide member |
| JPS568443A (en) * | 1979-07-03 | 1981-01-28 | Hitachi Cable Ltd | Electrically conductive polymer composition having positive temperature coefficient characteristic and heater employing the same |
| JPS5694028A (en) * | 1979-12-27 | 1981-07-30 | Ntn Toyo Bearing Co Ltd | Seal for roll bearing |
-
1984
- 1984-05-22 JP JP59103189A patent/JPH065110B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS502161A (en) * | 1973-05-14 | 1975-01-10 | ||
| JPS553375A (en) * | 1978-12-27 | 1980-01-11 | Taiho Kogyo Co Ltd | Slide member |
| JPS568443A (en) * | 1979-07-03 | 1981-01-28 | Hitachi Cable Ltd | Electrically conductive polymer composition having positive temperature coefficient characteristic and heater employing the same |
| JPS5694028A (en) * | 1979-12-27 | 1981-07-30 | Ntn Toyo Bearing Co Ltd | Seal for roll bearing |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192486A (en) * | 1992-12-22 | 1994-07-12 | Kureha Erasutomaa Kk | Conductive rubber |
| US5863135A (en) * | 1996-02-05 | 1999-01-26 | Aktieboalget Skf | Rolling bearing |
| JP2003083454A (en) * | 2001-09-13 | 2003-03-19 | Tsurumi Mfg Co Ltd | Rotary main shaft corrosion prevention device for underwater rotating machine |
| JP2012097213A (en) * | 2010-11-04 | 2012-05-24 | Nok Corp | Nitrile rubber composition |
| CN104870870A (en) * | 2012-12-14 | 2015-08-26 | Nok株式会社 | Sealing device |
| EP2933536A4 (en) * | 2012-12-14 | 2015-12-30 | Nok Corp | Sealing device |
| US9695938B2 (en) | 2012-12-14 | 2017-07-04 | Nok Corporation | Sealing device |
| WO2019105606A1 (en) * | 2017-11-28 | 2019-06-06 | Carl Freudenberg Kg | Seal arrangement |
| CN111386415A (en) * | 2017-11-28 | 2020-07-07 | 卡尔·弗罗伊登伯格公司 | Seal assembly |
| US11255438B2 (en) | 2017-11-28 | 2022-02-22 | Carl Freudenberg Kg | Seal arrangement |
| CN111386415B (en) * | 2017-11-28 | 2022-03-29 | 卡尔·弗罗伊登伯格公司 | Seal assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH065110B2 (en) | 1994-01-19 |
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