EP0194138A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Magnetic disk driving device
Assignee: Toshiba Tec Corp
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Filing: 1986-03-05
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Granted: —
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Expires: 2006-03-05
Abstract
Abstract @ A magnetic disk driving device is adapted such that by closure of an outer cover, a magnetic disk is press-fitted on a spindle by a push of push members without producing any play and the rotating surface of the magnetic disk is fixed by a regulating member, and by clamping of the outer cover, which is effected when the outer cover has once reached the position closest to a base and then slightly retreated therefrom, the push members are separated from the magnetic disk by means of relative movements of the outer cover and a plate with the positional relationship between the magnetic disk and the regulating member kept as it is.
Inventors
- 👤 Keisuke Murakami
- 👤 Masayoshi Kawahira
- 👤 Chihiro Aoki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 14:21
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/032; G11B17/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
329 words
A magnetic disk driving device comprising: a base; a disk supporting member attached at one side thereof to said base through a shaft operably for raising up from and laying down on said base; a magnetic disk removably supported by said disk supporting member; a spindle supported by said base for driving said magnetic disk; a magnetic head supported by said base for reciprocating in a radial direction of said magnetic disk; an outer cover disposed outside the rotation of said disk supporting member and operably attached to said base for raising up from and laying down on said base through the same shaft and in the same position as the disk supporting member is attached; a clamp mechanism for clamping said outer cover, when the outer cover is moved to the side of said base, in a position whereto the outer cover has slightly retreated from the position closest to the base which has been reached by the outer cover; a plate operably attached to the interior of said outer cover through elastic members for replacement; plate supports attached to said base, when said outer cover is moved in the direction of said base, for fixing opposition distance between said plate and said base; a regulating member attached to said plate for fixing the rotating surface of said magnetic disk when said outer cover is clamped; push members attached to said plate through a plate spring and facing the centre portion of said magnetic disk with a small distance kept therefrom when said plate has abutted on said plate supports; and a spring support attached to the interior of said outer cover for pushing said plate spring thereby to cause said push members to push the centre portion of said magnetic disk in snap action when the outer cover has made the maximum displacement in the direction of said base, and for causing said push members to retreat from said magnetic disk when said outer cover is clamped.
Claim 2
Dependent Claim
329 words
A magnetic disk driving device comprising: a base; a disk supporting member attached at one side thereof to said base through a shaft operably for raising up from and laying down on said base; a magnetic disk removably supported by said disk supporting member; a spindle supported by said base for driving said magnetic disk; a magnetic head supported by said base for reciprocating in a radial direction of said magnetic disk; an outer cover disposed outside the rotation of said disk supporting member and operably attached to said base for raising up from and laying down on said base through the same shaft and in the same position as the disk supporting member is attached; a clamp mechanism for clamping said outer cover, when the outer cover is moved to the side of said base, in a position whereto the outer cover has slightly retreated from the position closest to the base which has been reached by the outer cover; a plate operably attached to the interior of said outer cover through elastic members for replacement; plate supports attached to said base, when said outer cover is moved in the direction of said base, for fixing opposition distance between said plate and said base; a regulating member attached to said plate for fixing the rotating surface of said magnetic disk when said outer cover is clamped; push members attached to said plate through a plate spring and facing the centre portion of said magnetic disk with a small distance kept therefrom when said plate has abutted on said plate supports; and a spring support attached to the interior of said outer cover for pushing said plate spring thereby to cause said push members to push the centre portion of said magnetic disk in snap action when the outer cover has made the maximum displacement in the direction of said base, and for causing said push members to retreat from said magnetic disk when said outer cover is clamped.
Claim 3
Dependent Claim
114 words
A magnetic disk driving device according to claim 1, wherein a protruded piece is formed on said outer cover and a clamp claw is rotatably attached to said base which is engaged with said protruded piece when the same is rotated in a predetermined direction, said clamp claw being adapted, when said outer cover is displaced ot the maximum in the direction of said base, to be rotated in the direction to be disengaged from said protruded piece, and, when said outer cover, after being displaced to the maximum in the direction of said base, is slightly retreated from said base, to be rotated in the direction to be engaged with said protruded piece.
Claim 4
Dependent Claim
27 words
A magnetic disk driving device as claimed in claim 1 or claim 2 wherein said elastic members between said outer cover and plate are formed of springs.
Claim 5
Dependent Claim
53 words
.4. A magnetic disk driving device as claimed in any preceding claim, wherein said push members are formed in such shapes that the same cause the spindle to fit in the centre portion of said magnetic disk and push portions on said magnetic disk disposed opposite to each other with said spindle between.
Claim 6
Dependent Claim
28 words
A magnetic disk driving device as claimed in any preceding claim wherein said outer cover is always urged in the direction to be opened away from said base.
References Cited (Backward Citations)
No citation records indexed.
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