Apparatus and method of disc clamping for disc stack assembly
AssigneeSeagate Technology LLC
InventorsVictor Chi Siang Choo, PohLye Lim, Boon Seng Ong
Life of this patent
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Abstract
An apparatus and method for balancing a disc stack assembly of a disc drive where a clamp is used as a counter-balance as well as for securing a disc to the disc stack assembly. The clamp and spindle motor are configured for positive engagement and alignment with the use of a minimal number of parts. The clamp includes a cavity through which a protrusion or a shaft of the spindle motor hub may extend. The clamp may be further secured in a desired orientation by the use of a single fastener.
Claims22
An assembly comprising:
- a spindle motor comprising:
- a hub configured for rotation about an axis;
- and
- an extension protruding from the hub along the axis by a protrusion length;
- and
- a clamp having an inner edge defining a hole for receiving the extension.
9 The assembly of claim 8 in which the clamp is resiliently deformed by engagement with the fastener.
A disc drive comprising:
- a first disc;
- a spindle motor comprising:
- a hub configured for bearing the first disc in rotational motion about an axis;
- and
- an extension protruding from the hub along the axis by a protrusion length;
- a clamp having an inner edge defining a cavity for receiving the extension;
- and
- a fastener which in engagement with the extension comes into abutment with the inner edge of the clamp.
A disc drive comprising:
- a base;
- a disc stack assembly rotatably mounted to the base;
- and
- means for balancing the disc stack assembly.
Dependencies are inferred from the claim text.