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US 5,400,197 AGranted
Disc drive spindle motor
AssigneeSeagate Technology LLC
InventorsIra J. Jabbari, Michael J. Darling
Life of this patent
Estimating the term…
Abstract
A low profile fixed shaft disc drive motor with separate disc mounting and motor sections. The motor is ball staked to a cup shaped piece of sheet metal, which is in turn screwed onto the casing of the disc drive. The motor shaft has an integral lamination mounting flange. The hub has a lower, cup shaped magnet section which has a feature for mounting the discs which is the same length as a disc spacer.
Claims6
A disc drive motor comprising:
- a fixed cylindrical shaft having a ball staking recess at one end;
- a shaft flange integral with said shaft adjacent said one end but spaced therefrom a short distance to define a lip;
- motor laminations mounted on said flange;
- a sheet of metal having aperture approximately the same diameter as said shaft;
- said one end of said shaft being inserted into said aperture and ball staked thereto by means of said ball staking recess;
- the length of said lip being approximately the same as the thickness of said metal sheet such that when said one end is inserted into said aperture to the point where the flange abuts the sheet of metal, said one end of said shaft does not protrude beyond the plane of the other side of said sheet of metal;
- said sheet of metal further including a plurality of mounting screw apertures;
- and
- a disc drive casing having a plurality of screw holes corresponding to the screw holes in said sheet metal:
- the combined assembly of shaft, laminations and sheet metal being mounted on said disc drive casing by means of screws through the respective screw holes.
7 more elements
Dependencies are inferred from the claim text.