Disk drive head suspension assembly with piezo element stress relief features
AssigneeWestern Digital Technologies, Inc.
InventorsTzong-Shii Pan, Kia Moh Teo, Wing C. Shum, Yanning Liu, Mukund Vijay
Life of this patent
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Abstract
A head suspension assembly for a disk drive includes a mounting plate that may include an annular swage boss. A load beam is attached to and extends from the mounting plate in a longitudinal direction. A first piezoelectric element is disposed within a first piezoelectric element receiving window in the mounting plate. The load beam includes a first etched region that is elongated in a transverse direction that is transverse to the longitudinal direction. The first etched region neighbors the first piezoelectric element and is disposed closer to the annular swage boss than is the first piezoelectric element.
Claims21
A disk drive comprising:
- a disk drive base;
- a spindle attached to the disk drive base;
- a disk mounted on the spindle;
- a first actuator pivotally attached to the disk drive base, the first actuator including a conductive coil and an actuator arm;
- and
- a head suspension assembly comprising
- a mounting plate attached to the actuator arm;
- a load beam attached to and extending from the mounting plate in a longitudinal direction;
- a first piezoelectric element disposed within a first piezoelectric element receiving window in the mounting plate;
- wherein the load beam includes a first etched region that is elongated in a transverse direction that is transverse to the longitudinal direction, the first etched region neighboring the first piezoelectric element and being disposed closer to the actuator arm than is the first piezoelectric element;
- and
- a read head supported by the load beam and disposed adjacent a surface of the disk.
A head suspension assembly comprising:
- a mounting plate that includes an annular swage boss;
- a load beam attached to and extending from the mounting plate in a longitudinal direction;
- and
- a first piezoelectric element disposed within a first piezoelectric element receiving window in the mounting plate;
- wherein the load beam includes a first etched region that is elongated in a transverse direction that is transverse to the longitudinal direction, the first etched region neighboring the first piezoelectric element and being disposed closer to the annular swage boss than is the first piezoelectric element.
Dependencies are inferred from the claim text.