Disc pack assembly
AssigneeSeagate Technology LLC
InventorAnthony J. Aiello
Life of this patent
Estimating the term…
Abstract
A disc pack assembly for use in a disc drive storage system or external servo writer that is configured to maintain concentric alignment between one or more discs and a hub during handling. The disc pack assembly generally includes a disc support having an annular shoulder, a disc supported on the annular shoulder, and a hub top. The hub top includes a spindle mount portion, a ring mount portion and an annular clamping flange. The spindle mount portion is mountable to a rotatable spindle of a motor of a disc drive or an external servo writer. The ring mount portion is positioned in interference-fit engagement with the disc support for attachment thereto. The annular clamping flange applies an axial force to the disc to secure the disc between the clamping flange and the annular shoulder.
Claims29
A disc pack assembly for mounting to a rotatable spindle of a motor of disc drive or servo writer comprising:
- a disc support having an annular shoulder;
- a disc supported on the annular shoulder;
- and
- a hub top having a spindle mount portion mountable to the rotatable spindle, a ring mount portion in interference-fit engagement with the disc support, and an annular clamping flange configured to apply an axial force to the disc.
A disc pack assembly for mounting to a rotatable spindle of a disc drive or servo writer comprising:
- a disc support having an annular shoulder;
- a plurality of discs including a top disc and a bottom disc, each disc separated from adjacent discs by a spacer member, the bottom disc supported on the annular shoulder;
- and
- a hub top having a spindle mount portion mountable to the spindle, a ring mount portion in interference-fit engagement with the disc support, and an annular clamping flange, whereby a compressive axial force is applied to the discs by the annular clamping flange and annular shoulder.
A disc drive comprising:
- a rotatable spindle;
- a motor configured to rotate the spindle;
- and
- a disc pack assembly comprising:
- a disc support having an annular shoulder;
- a disc supported on the annular shoulder;
- and
- a hub top having a spindle mount portion mountable to the rotatable spindle, a ring mount portion in interference-fit engagement with the disc support, and an annular clamping flange, whereby a compressive axial force is applied to the disc through the annular shoulder and the annular clamping flange.
A method of assembling a disc drive comprising steps of:
- (a) providing a disc drive subassembly including a base, a motor mounted to the base, and a spindle rotatable by the motor;
- (b) assembling a disc pack assembly comprising steps of:
- (b)(1) positioning a disc on an annular shoulder of a disc support;
- and
- (b)(2) press-fitting a ring mount portion of a hub top to the disc support for interference-fit engagement therebetween, the hub top including an annular clamping flange, whereby a compressive axial force is applied to the disc between the annular shoulder and the annular clamping flange;
- and
- (c) attaching a spindle mount portion of the hub top to the spindle.
A disc pack assembly for use in a disc drive comprising:
- a disc support having an annular shoulder;
- a disc supported on the annular shoulder at a bottom surface;
- and
- a hub top having a means for providing interference-fit attachment to the disc support and applying a compressive axial force to the disc.
Dependencies are inferred from the claim text.