System and method for attaching a disk clamp to the hub of a spindle motor in a hard disk drive
First Claim
1. A system for concentrically aligning and attaching a disk clamp to a hub of a motor in a hard disk drive, comprising:
- a hub of a motor having a plurality of fastener openings formed on a bolt circle diameter, and an annular recess formed in and circumscribing the hub, the annular recess defining an outer wall;
a disk clamp having a plurality of apertures extending therethrough at the bolt circle diameter, and an annular rim protruding from the disk clamp, the annular rim defining an inner wall; and
the disk clamp being centered on the hub by engaging the inner wall of the disk clamp with the outer wall of the hub such that the annular rim of the disk clamp is closely received by and seats in the annular recess in the hub.
1 Assignment
0 Petitions
Accused Products
Abstract
A disk clamp for securing data storage disks to the hub of a spindle motor in a hard disk drive has a circumferential rib protruding from a lower surface of the disk clamp. A complementary recess is formed in the hub of the spindle motor for closely receiving the rib on the disk clamp. The inner diameter of the rib and the outer diameter of the recess are closely toleranced to provide a very precise centering feature for mounting and aligning the disk clamp with respect to the hub and spindle motor. This design reduces the complexity of the tooling and fixtures required to complete the assembly and the overall part cost is reduced.
10 Citations
13 Claims
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1. A system for concentrically aligning and attaching a disk clamp to a hub of a motor in a hard disk drive, comprising:
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a hub of a motor having a plurality of fastener openings formed on a bolt circle diameter, and an annular recess formed in and circumscribing the hub, the annular recess defining an outer wall;
a disk clamp having a plurality of apertures extending therethrough at the bolt circle diameter, and an annular rim protruding from the disk clamp, the annular rim defining an inner wall; and
the disk clamp being centered on the hub by engaging the inner wall of the disk clamp with the outer wall of the hub such that the annular rim of the disk clamp is closely received by and seats in the annular recess in the hub. - View Dependent Claims (2, 3, 4)
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5. (canceled)
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6. (canceled)
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7. (canceled)
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8. A method of concentrically aligning and attaching a disk clamp to a hub of a motor in a hard disk drive, the method comprising:
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(a) providing a hub of a motor with an annular recess formed in and circumscribing the hub, the annular recess defining an outer wall, a disk clamp having an annular rim protruding from the disk clamp, the annular rim defining an inner wall;
(b) mounting a disk to the hub;
(b) placing the disk clamp on the hub to retain the disk on the hub;
(c) aligning the annular rim on the disk clamp with the annular recess in the hub, such that the disk clamp is centered on the hub by engaging the inner wall of the disk clamp with the outer wall of the hub; and
(d) closely receiving and seating the annular rim of the disk clamp in the annular recess in the hub to form a disk pack assembly. - View Dependent Claims (9, 10, 11)
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12. (canceled)
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13. (canceled)
Specification