JPS57154688A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS57154688A
JPS57154688A JP2273482A JP2273482A JPS57154688A JP S57154688 A JPS57154688 A JP S57154688A JP 2273482 A JP2273482 A JP 2273482A JP 2273482 A JP2273482 A JP 2273482A JP S57154688 A JPS57154688 A JP S57154688A
Authority
JP
Japan
Prior art keywords
disk
valve
internal
housing
internal pressure
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
JP2273482A
Other languages
Japanese (ja)
Other versions
JPS5817990B2 (en
Inventor
Hideaki Amano
Asao Sasamoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2273482A priority Critical patent/JPS5817990B2/en
Publication of JPS57154688A publication Critical patent/JPS57154688A/en
Publication of JPS5817990B2 publication Critical patent/JPS5817990B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a magnetic head, a disk and a housing from being damaged, by providing a valve for blowing off air being in a disk chamber or making air flow in through a filter, by a difference between internal pressure and external pressure of the enclosed disk chamber.
CONSTITUTION: In a disk housing 1 consisting of an enclosed structure, a magnetic disk 7 whose rotation is driven, a head 5 supported by a head bar 6, a pressure control valve 4, and a moisture absorbing agent 3 for absorbing moisture and corrosive gas in a disk chamber 2, etc. are provided. As for the pressure control valve 4, when internal pressure becomes high, force pushing up a valve 10 by internal pressure becomes larger than external pressure by the left valve and a spring 12, and internal air flows out to the outside through small holes 13 and 14. When internal pressure becomes low, the right valve operates in the same way, and air goes into the disk chamber 2 through a filter 18 for filtering dust and a moisture absorbing agent 17. In this way, damage of the internal device and the housing is prevented.
COPYRIGHT: (C)1982,JPO&Japio
JP2273482A 1982-02-17 1982-02-17 magnetic disk device Expired JPS5817990B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2273482A JPS5817990B2 (en) 1982-02-17 1982-02-17 magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2273482A JPS5817990B2 (en) 1982-02-17 1982-02-17 magnetic disk device

Publications (2)

Publication Number Publication Date
JPS57154688A true JPS57154688A (en) 1982-09-24
JPS5817990B2 JPS5817990B2 (en) 1983-04-11

Family

ID=12090957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2273482A Expired JPS5817990B2 (en) 1982-02-17 1982-02-17 magnetic disk device

Country Status (1)

Country Link
JP (1) JPS5817990B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0526385U (en) * 1991-09-19 1993-04-06 株式会社小森コーポレーシヨン Roller cleaning device for printing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912587U (en) * 1982-07-14 1984-01-26 三菱電機株式会社 assembly robot
JPS60126702U (en) * 1984-02-02 1985-08-26 株式会社三協精機製作所 Robot cylinder stroke switching device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0526385U (en) * 1991-09-19 1993-04-06 株式会社小森コーポレーシヨン Roller cleaning device for printing machine

Also Published As

Publication number Publication date
JPS5817990B2 (en) 1983-04-11

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