JPS57183682A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS57183682A
JPS57183682A JP6798981A JP6798981A JPS57183682A JP S57183682 A JPS57183682 A JP S57183682A JP 6798981 A JP6798981 A JP 6798981A JP 6798981 A JP6798981 A JP 6798981A JP S57183682 A JPS57183682 A JP S57183682A
Authority
JP
Japan
Prior art keywords
shaft
spindle
seal
tap
inner diameter
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
JP6798981A
Other languages
Japanese (ja)
Other versions
JPS6357871B2 (en
Inventor
Masayuki Kimura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6798981A priority Critical patent/JPS57183682A/en
Publication of JPS57183682A publication Critical patent/JPS57183682A/en
Publication of JPS6357871B2 publication Critical patent/JPS6357871B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To facilitate the easy setting of a spindle and to prevent outer air from flowing into a disk loader to eliminate the dust, by making the inner diameter of a magnetic seal larger than the outer diameter of an upper bearing and at the same time providing a tap piercing hole to the spindle hub. CONSTITUTION:The inner diameter of a magnetic seal 6 is larger than the outer diameter of an outer wheel of an upper bearing 2 whose inner wheel is fixed to a spindle shaft 1. Thus a spindle hab 5 and the shaft 1 are cast into one body, and the bearing 2 is set to the shaft 1 as well as to the shaft 1 after setting the seal 6 into a housing 4. This assembly can be easily set into the housing 4 from the upper part. A magnetic fluid 24 can be easily indjected through a tap piercing hole provided at the area which is nearly coincident with a gap part that forms a magnetic field where the outer diameter of the shaft 1 of the hub 5 is opposite to the inner diameter of the seal 6. After the injection, the tap hole can be completely closed with a setscrew 19.
JP6798981A 1981-05-06 1981-05-06 Magnetic disk device Granted JPS57183682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6798981A JPS57183682A (en) 1981-05-06 1981-05-06 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6798981A JPS57183682A (en) 1981-05-06 1981-05-06 Magnetic disk device

Publications (2)

Publication Number Publication Date
JPS57183682A true JPS57183682A (en) 1982-11-12
JPS6357871B2 JPS6357871B2 (en) 1988-11-14

Family

ID=13360884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6798981A Granted JPS57183682A (en) 1981-05-06 1981-05-06 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS57183682A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60103554A (en) * 1983-11-11 1985-06-07 Mitsubishi Electric Corp Spindle structure
US4646192A (en) * 1981-12-23 1987-02-24 Cii-Honeywell Bull (Societe Anonyme) Magnetic disc cartridge having improved disc brake
US5008573A (en) * 1989-02-22 1991-04-16 Hitachi, Ltd. Magnetic disk enclosure with detachable stator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646192A (en) * 1981-12-23 1987-02-24 Cii-Honeywell Bull (Societe Anonyme) Magnetic disc cartridge having improved disc brake
JPS60103554A (en) * 1983-11-11 1985-06-07 Mitsubishi Electric Corp Spindle structure
JPH0513348B2 (en) * 1983-11-11 1993-02-22 Mitsubishi Electric Corp
US5008573A (en) * 1989-02-22 1991-04-16 Hitachi, Ltd. Magnetic disk enclosure with detachable stator

Also Published As

Publication number Publication date
JPS6357871B2 (en) 1988-11-14

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