JPS5972361U - Bearing unit using magnetic fluid seal - Google Patents

Bearing unit using magnetic fluid seal

Info

Publication number
JPS5972361U
JPS5972361U JP16704582U JP16704582U JPS5972361U JP S5972361 U JPS5972361 U JP S5972361U JP 16704582 U JP16704582 U JP 16704582U JP 16704582 U JP16704582 U JP 16704582U JP S5972361 U JPS5972361 U JP S5972361U
Authority
JP
Japan
Prior art keywords
magnetic fluid
fluid seal
inner ring
outer ring
bearing
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
Application number
JP16704582U
Other languages
Japanese (ja)
Other versions
JPS6329944Y2 (en
Inventor
恭三郎 古村
Original Assignee
日本精工株式会社
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 日本精工株式会社 filed Critical 日本精工株式会社
Priority to JP16704582U priority Critical patent/JPS5972361U/en
Publication of JPS5972361U publication Critical patent/JPS5972361U/en
Application granted granted Critical
Publication of JPS6329944Y2 publication Critical patent/JPS6329944Y2/ja
Granted legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

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。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の磁性流体シールを使用した磁気ディスク
スピンドルの要部断面図、第２図は第１図の要部拡大図
、第３図は本考案の実施例を示す要部拡大図である。 符号の説明、１・・・・・・軸、２・・・・・・ハウジ
ング、３・・・・・田−タ、４・・・・・・磁気ディス
ク、８・・・・・・軸受、８１・・・・・・外輪、８２
・・・・・・内輪、８２１・・・・・・伸長円筒部、９
・・・・・・シール本体、９１・・・・・・ポールピー
ス、９２・・・・・・プラスチック磁石、１２・・・・
・・プラスチック製のケース、１１・・・・・・磁性流
体。Fig. 1 is a cross-sectional view of the main part of a magnetic disk spindle using a conventional magnetic fluid seal, Fig. 2 is an enlarged view of the main part of Fig. 1, and Fig. 3 is an enlarged view of the main part showing an embodiment of the present invention. be. Explanation of symbols, 1...shaft, 2...housing, 3...data, 4...magnetic disk, 8...bearing , 81...Outer ring, 82
...Inner ring, 821...Extended cylindrical portion, 9
... Seal body, 91 ... Pole piece, 92 ... Plastic magnet, 12 ...
...Plastic case, 11...Magnetic fluid.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）外輪と内輪との間に転動体を介装し、前記外輪の
端部に内輪外周との間を密閉する密閉板を有する軸受に
おいて、前記内輪の一方の側には外輪の端面よりも、軸
方向に伸長された伸長円筒部を有し、前記外輪には１対
のポールピースと磁石からなる磁性流体用シール本体を
保持してこれと一体的に成型加工されてなるケースを・
　　　固定し、前記シール本体内周部と前記内輪の伸長
円筒部の外周面との間にラビリンスを設け、該ラビリン
スに磁性流体を注入してなる磁性流体シールを用いた軸
受ユニット。(1) A bearing in which a rolling element is interposed between an outer ring and an inner ring, and a sealing plate is provided at the end of the outer ring to seal the space between the inner ring and the outer periphery of the inner ring, and one side of the inner ring is located closer to the outer ring than the end surface of the outer ring. The case also has an elongated cylindrical part extending in the axial direction, and the outer ring holds a magnetic fluid seal body consisting of a pair of pole pieces and a magnet, and is integrally molded with the main body.
A bearing unit using a magnetic fluid seal in which a labyrinth is provided between the inner circumference of the seal main body and an outer circumferential surface of an elongated cylindrical portion of the inner ring, and a magnetic fluid is injected into the labyrinth. （２）軸受が玉軸受である実用新案登録請求の範囲第１
項記載の磁性流体シールを用いた軸受ユニット。(2) Scope of utility model registration claim 1 where the bearing is a ball bearing
A bearing unit using the magnetic fluid seal described in Section 1.
JP16704582U 1982-11-05 1982-11-05 Bearing unit using magnetic fluid seal Granted JPS5972361U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16704582U JPS5972361U (en) 1982-11-05 1982-11-05 Bearing unit using magnetic fluid seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16704582U JPS5972361U (en) 1982-11-05 1982-11-05 Bearing unit using magnetic fluid seal

Publications (2)

Publication Number Publication Date
JPS5972361U true JPS5972361U (en) 1984-05-16
JPS6329944Y2 JPS6329944Y2 (en) 1988-08-11

Family

ID=30365559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16704582U Granted JPS5972361U (en) 1982-11-05 1982-11-05 Bearing unit using magnetic fluid seal

Country Status (1)

Country Link
JP (1) JPS5972361U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61136020A (en) * 1984-12-03 1986-06-23 Nec Corp Spindle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522648A (en) * 1978-08-07 1980-02-18 Tanabe Seiyaku Co Ltd Preparatin of 5-methyl-1,4-thiazan-3-carboxylic acid
JPS5676722A (en) * 1979-11-29 1981-06-24 Nippon Seiko Kk Sealed antifriction bearing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522648A (en) * 1978-08-07 1980-02-18 Tanabe Seiyaku Co Ltd Preparatin of 5-methyl-1,4-thiazan-3-carboxylic acid
JPS5676722A (en) * 1979-11-29 1981-06-24 Nippon Seiko Kk Sealed antifriction bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61136020A (en) * 1984-12-03 1986-06-23 Nec Corp Spindle

Also Published As

Publication number Publication date
JPS6329944Y2 (en) 1988-08-11

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