Disk drive having elastomeric interface in pivot bearing assembly
First Claim
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1. A disk drive comprising:
- an enclosure comprising a base and a cover coupled to the base;
a disk, having a recording surface adapted for storage and retrieval for data thereon;
a spindle motor, mounted to the base and coupled to the disk;
a head stack assembly comprising a body portion having a bore, a head gimbal assembly attached to the body portion, and a coil attached to the body portion;
a pivot bearing assembly installed in the head stack assembly bore, having a sleeve member for rotatably supporting the head stack assembly and having a stationary structure affixed to the enclosure; and
means for defining an elastomeric interface that provides vibration isolation, the elastomeric interface being located between the sleeve member and the stationary structure such that any vibration of the sleeve member can couple to the stationary structure only through the elastomeric interface.
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Abstract
A disk drive has a base, a cover, a spindle motor mounted to the base, and a disk coupled to the spindle motor. A rotary actuator comprising a head stack assembly is coupled to the base by a pivot bearing assembly. The pivot bearing assembly provides a stationary member, a bearing, and a sleeve member for rotatably supporting the actuator. The pivot bearing assembly further provides an elastomeric interface between the stationary member and the actuator such that vibratory motion imparted to the head stack assembly is dampened by the elastomeric interface.
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Citations
16 Claims
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1. A disk drive comprising:
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an enclosure comprising a base and a cover coupled to the base; a disk, having a recording surface adapted for storage and retrieval for data thereon; a spindle motor, mounted to the base and coupled to the disk; a head stack assembly comprising a body portion having a bore, a head gimbal assembly attached to the body portion, and a coil attached to the body portion; a pivot bearing assembly installed in the head stack assembly bore, having a sleeve member for rotatably supporting the head stack assembly and having a stationary structure affixed to the enclosure; and means for defining an elastomeric interface that provides vibration isolation, the elastomeric interface being located between the sleeve member and the stationary structure such that any vibration of the sleeve member can couple to the stationary structure only through the elastomeric interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A pivot bearing assembly, for use in a disk drive having a base, a cover coupled to the base, a disk having a recording surface adapted for storage and retrieval for data thereon, a spindle motor, mounted to the base and coupled to the disk, a head stack assembly comprising a body portion having a bore, a head gimbal assembly attached to the body portion, and a coil attached to the body portion, the pivot bearing assembly further comprising:
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a sleeve member for rotatably supporting the head stack assembly; a stationary structure affixed to the base and to the cover; and means for defining an elastomeric interface that provides vibration isolation, the elastomeric interface being located between the sleeve member and the stationary structure such that any vibration of the sleeve member can couple to the stationary structure only through the elastomeric interface. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification