JPS60205018A - Roller bearing device of magnetic fluid seal type - Google Patents
Roller bearing device of magnetic fluid seal typeInfo
- Publication number
- JPS60205018A JPS60205018A JP59060056A JP6005684A JPS60205018A JP S60205018 A JPS60205018 A JP S60205018A JP 59060056 A JP59060056 A JP 59060056A JP 6005684 A JP6005684 A JP 6005684A JP S60205018 A JPS60205018 A JP S60205018A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- magnetic
- ring
- outer ring
- split rings
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/762—Sealings of ball or roller bearings by means of a fluid
- F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
- F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
-
- 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
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Abstract
Description
【発明の詳細な説明】
本発明は、磁性流体シール転がり軸受に関するものであ
り、さらに詳しくは、従来から用いられているグリース
密封軸受に代えて使用でき、特に真空中ヤ使用したり、
圧力差のある気体雰囲気中への動力導入軸に使用するの
に適した転がり軸受に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic fluid sealed rolling bearing, and more specifically, it can be used in place of conventionally used grease sealed bearings, and in particular can be used in a vacuum.
This invention relates to a rolling bearing suitable for use in a shaft for introducing power into a gas atmosphere with a pressure difference.
従来、例えば回転軸の荷重を支える軸受、軸受内への汚
染物質等の侵入を防除するシール、あるいは軸上のある
点を境にして圧力差をシールする軸シール等は、それぞ
れに特有の機能を有する部品という性格を有し、たとえ
それらの複数の機能を兼ね備えたものがあったとしても
、個々の機能を有する部品を単純に結合一体化したにす
ぎないのが通例である。Conventionally, for example, bearings that support the load of a rotating shaft, seals that prevent contaminants from entering the bearing, or shaft seals that seal pressure differences at a certain point on the shaft each have their own unique functions. Even if there is a part that has multiple functions, it is usually just a simple combination of parts with individual functions.
本発明は、軸受に上述した複数の機能を兼備させるにあ
たり、各機能を発揮させるための部材を有機的に結合し
、簡単でコンパクトな構成によって所期の機能をもたせ
るようにしたことを特徴とするものである。The present invention is characterized in that, in order to provide a bearing with the plurality of functions described above, the members for performing each function are organically combined, and the desired functions are provided with a simple and compact structure. It is something to do.
而して、本発明の磁性流体シール転がり軸受は、外輪を
その中央において二分割した一対の磁性体材料からなる
外輪分割リングの間に永久磁石を介在させることにより
構成し、この外輪と内輪との間に非磁性体の転動体を設
け、上記外輪の外側面に当接した磁極板の内縁と内輪と
の間に磁性流体を介在させることによって構成される・
以下、図面を参照して本発明の実施例について、；′を
述する。The magnetic fluid sealed rolling bearing of the present invention is constructed by interposing a permanent magnet between a pair of outer ring split rings made of a magnetic material, which are formed by dividing an outer ring into two at the center thereof. A non-magnetic rolling element is provided in between, and a magnetic fluid is interposed between the inner ring and the inner edge of the magnetic pole plate that is in contact with the outer surface of the outer ring.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図及び第２図に示す実施例において外筒１内に圧入
された外輪２は、その中央において二分割した一対の外
輪分割リング２ａ、２ｂと、それらの間に介在させたリ
ング状の永久磁石３とによって構成し、この外輪２と内
輪４との間には、保持器５によって保持した多数のポー
ル６を介在させている。従って、上記ポール６は一対の
外輪分割リング２ａ、２ｂと内輪４に接触し、３点接触
型となる。また、−上記外輪分割リング２ａ、２ｂの外
側面には、円環状の磁極板７ａ、？ｂを当接し、その内
縁と内輪４における肩部との間に磁性流体８を介在させ
ている。なお、上記ポール６のまわりにはグリースが注
入される。In the embodiment shown in FIGS. 1 and 2, the outer ring 2 press-fitted into the outer cylinder 1 consists of a pair of outer ring split rings 2a and 2b divided into two parts at the center, and a ring-shaped ring interposed between them. A large number of poles 6 held by a retainer 5 are interposed between the outer ring 2 and the inner ring 4. Therefore, the pawl 6 contacts the pair of outer ring split rings 2a, 2b and the inner ring 4, forming a three-point contact type. Further, - on the outer surface of the outer ring split rings 2a, 2b, an annular magnetic pole plate 7a, ? b, and a magnetic fluid 8 is interposed between its inner edge and the shoulder of the inner ring 4. Note that grease is injected around the pole 6.
１−記構成を有する軸受において、外軸分割リング２ａ
、２ｂ及び内輪４は、従来から一般的に用いられている
軸受鋼または滲炭鋼材等の耐摩耗性がある磁性体材料に
よって形成され、またポール６は窒化硅素その他の非磁
性体のセラミックス材によって形成され、保持器５は黄
銅や青銅等の銅合金あるいはその他の非磁性体材料によ
って形成される。なお、外筒ｌは非磁性体材料により形
成され また磁極板７ａ、７ｂの材料としては鋼等が用
いられる。1- In the bearing having the configuration described above, the outer shaft split ring 2a
, 2b, and the inner ring 4 are made of a wear-resistant magnetic material such as conventionally commonly used bearing steel or decarburized steel, and the pole 6 is made of a non-magnetic ceramic material such as silicon nitride. The retainer 5 is made of a copper alloy such as brass or bronze, or other non-magnetic material. The outer cylinder l is made of a non-magnetic material, and the magnetic pole plates 7a and 7b are made of steel or the like.
従って、上記軸受は外輪２と内輪４との間にポール６を
介在させた構造により１回転軸の荷重を支えてそれを円
滑に回転させるという軸受本体の機能を発揮することは
勿論であるが、磁極板？ａ、７ｂと内輪４との間に介在
させた磁性流体８がそれらを通して流れる磁束によって
磁性流体シールを構成し、この磁性流体シールによって
ポール６の近辺が外部と遮断されるので、軸受内への７
り染物質等の侵入を防除すると共に、この軸受の両側の
雰囲気ガスやその圧力差に対するシールを行うことがで
きる。Therefore, the above-mentioned bearing has a structure in which the pole 6 is interposed between the outer ring 2 and the inner ring 4, and it goes without saying that the bearing itself performs the function of supporting the load of one rotation shaft and rotating it smoothly. , magnetic pole plate? The magnetic fluid 8 interposed between a, 7b and the inner ring 4 constitutes a magnetic fluid seal by the magnetic flux flowing through them, and the vicinity of the pole 6 is isolated from the outside by this magnetic fluid seal, so that no inflow into the bearing is possible. 7
In addition to preventing the intrusion of staining substances, etc., it is also possible to seal against atmospheric gas and pressure differences on both sides of the bearing.
しかも、上記軸受においては、外輪２及び内輪４が磁性
流体シールのための磁路の一部を構成し、Ｑｌｔに外輪
２の外側面に磁極板？ａ、？ｂを当接して、それらの磁
極板と内輪４との間に磁性流体シールを形設したので、
そのＭｆｆｌが著しく単純化される。Moreover, in the above bearing, the outer ring 2 and the inner ring 4 constitute a part of the magnetic path for sealing the magnetic fluid, and the outer ring 2 has a magnetic pole plate on its outer surface. a,? b were brought into contact with each other to form a magnetic fluid seal between these magnetic pole plates and the inner ring 4.
The Mffl is significantly simplified.
第３図及び第４図は本発明の他の実施例を示すもので、
前記実施例においては転動体としてポールを用いている
のに対し、円筒状のころ１６を用い、また外輪分割リン
グ２ａ、２ｂ間に配設する永久磁イ」を、多数の磁石片
１３．＋３．・・にょって構成し、それらの磁石Ｊ１１
３を外輪分割リング２ａ、２ｂ間に密に配設させている
。3 and 4 show other embodiments of the present invention,
In the embodiment described above, poles are used as the rolling elements, but cylindrical rollers 16 are used, and the permanent magnets disposed between the outer ring split rings 2a and 2b are composed of a large number of magnet pieces 13. +3.・Constructed by Nyoto, those magnets J11
3 are closely arranged between the outer ring split rings 2a and 2b.
なお、その他の構成及び作用は前記実施例の場合と実質
的に同一であり、従って同一または相当部分に同−符号
を伺してその説明を省略する。Note that the other configurations and operations are substantially the same as those of the previous embodiment, and therefore, the same or corresponding parts will be denoted by the same reference numerals and the explanation thereof will be omitted.
以上に詳述したところから明らかなように、本発明によ
れば、極めて簡単な構成によって、従来の転がり軸受に
おける荷重の支持機能に磁性流体シールの機能を付加す
ることができ、従って真空中その他部滑油蒸気の漏洩を
嫌う雰囲気中で使用される機器の軸受、圧力差のある気
体雰囲気中への動力導入軸の軸受に利用して、極めて有
効なものである。As is clear from the above detailed description, according to the present invention, with an extremely simple configuration, the function of magnetic fluid sealing can be added to the load supporting function of conventional rolling bearings, and therefore It is extremely effective for use in bearings for equipment used in atmospheres where leakage of lubricant vapor is averse, and bearings for shafts that introduce power into gas atmospheres where there is a pressure difference.
第１図及び第２図は本発明の実施例の縦断面図及び部分
断面図、第３図及び第４図は木発ＩＩの他の実施例の縦
断面図及び部分断面図である。
２Φ量外輪、 ２ａ、２ｂ・―外輪分割リング、３争・
永久磁石、 ４・拳内輪、 ６・拳ポール。1 and 2 are a longitudinal sectional view and a partial sectional view of an embodiment of the present invention, and FIGS. 3 and 4 are a longitudinal sectional view and a partial sectional view of another embodiment of Kibatsu II. 2Φ amount outer ring, 2a, 2b・-Outer ring split ring, 3 races・
Permanent magnet, 4. Fist inner ring, 6. Fist pole.
Claims (1)
料からなる外輪分割リングの間に永久磁石を介在させる
ことにより構成し、この外輪と内輪との間に非磁性体の
転動体を設け、上記外輪の外側面に当接した磁極板の内
縁と内輪との間に磁性流体を介在させたことを特徴とす
る磁性流体シール転がり軸受。1. The outer ring is divided into two at the center, and a permanent magnet is interposed between a pair of outer ring split rings made of a magnetic material, and non-magnetic rolling elements are provided between the outer ring and the inner ring. A magnetic fluid sealed rolling bearing characterized in that a magnetic fluid is interposed between the inner ring and the inner edge of the magnetic pole plate that is in contact with the outer surface of the outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59060056A JPS60205018A (en) | 1984-03-28 | 1984-03-28 | Roller bearing device of magnetic fluid seal type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59060056A JPS60205018A (en) | 1984-03-28 | 1984-03-28 | Roller bearing device of magnetic fluid seal type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60205018A true JPS60205018A (en) | 1985-10-16 |
| JPH0470489B2 JPH0470489B2 (en) | 1992-11-11 |
Family
ID=13131042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59060056A Granted JPS60205018A (en) | 1984-03-28 | 1984-03-28 | Roller bearing device of magnetic fluid seal type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60205018A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4761082A (en) * | 1986-04-21 | 1988-08-02 | Skf Industrial Trading And Development Company, B.V. | Roller bearing |
| US4765756A (en) * | 1986-04-22 | 1988-08-23 | Skf Industrial Trading And Development Co., B.V. | Rolling bearing |
| JPH03112118U (en) * | 1990-03-02 | 1991-11-15 | ||
| JPH0628346U (en) * | 1992-09-09 | 1994-04-15 | 中部ベアリング株式会社 | Roller conveyor bearing |
| DE102007022675A1 (en) | 2007-05-15 | 2008-11-20 | Schaeffler Kg | Sealing arrangement for a rolling bearing |
| JP2015010674A (en) * | 2013-06-28 | 2015-01-19 | グローブライド株式会社 | Bearing with magnetic fluid seal |
| US20190186535A1 (en) * | 2017-12-14 | 2019-06-20 | Aktiebolaget Skf | Bearing assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS567086A (en) * | 1979-06-30 | 1981-01-24 | Ryoichi Edane | Color-classified displaying method for full electronic digital time-keeper |
| JPS5715152A (en) * | 1980-07-02 | 1982-01-26 | Nippon Seiko Kk | Sealing apparatus |
-
1984
- 1984-03-28 JP JP59060056A patent/JPS60205018A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS567086A (en) * | 1979-06-30 | 1981-01-24 | Ryoichi Edane | Color-classified displaying method for full electronic digital time-keeper |
| JPS5715152A (en) * | 1980-07-02 | 1982-01-26 | Nippon Seiko Kk | Sealing apparatus |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4761082A (en) * | 1986-04-21 | 1988-08-02 | Skf Industrial Trading And Development Company, B.V. | Roller bearing |
| US4765756A (en) * | 1986-04-22 | 1988-08-23 | Skf Industrial Trading And Development Co., B.V. | Rolling bearing |
| JPH03112118U (en) * | 1990-03-02 | 1991-11-15 | ||
| JPH0628346U (en) * | 1992-09-09 | 1994-04-15 | 中部ベアリング株式会社 | Roller conveyor bearing |
| DE102007022675A1 (en) | 2007-05-15 | 2008-11-20 | Schaeffler Kg | Sealing arrangement for a rolling bearing |
| JP2015010674A (en) * | 2013-06-28 | 2015-01-19 | グローブライド株式会社 | Bearing with magnetic fluid seal |
| US20190186535A1 (en) * | 2017-12-14 | 2019-06-20 | Aktiebolaget Skf | Bearing assembly |
| CN110017326A (en) * | 2017-12-14 | 2019-07-16 | 斯凯孚公司 | Bearing assembly |
| US11156250B2 (en) * | 2017-12-14 | 2021-10-26 | Aktiebolaget Skf | Bearing assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0470489B2 (en) | 1992-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |