Head suspension assembly and magnetic disk drive
AssigneeToshiba Storage Device Corporation
InventorsYusuke NOJIMA, Shinji KOGANEZAWA
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a head suspension assembly includes a load beam supporting a head, and a microactuator configured to swing the load beam. The microactuator includes two piezoelectric elements configured to undergo shear deformation when supplied with a voltage and juxtaposed in such a manner that respective shear deformations thereof are opposite in direction, a first electrode and a second electrode arranged so as to hold the piezoelectric elements therebetween, and a support plate joined to the first electrode with an insulating layer therebetween and joined to the load beam to support the load beam.
Claims8
A head suspension assembly comprising:
- a load beam supporting a head;
- and
- a microactuator configured to swing the load beam,
- the microactuator comprising two piezoelectric elements configured to shear when the two piezoelectric elements are aligned next to each other and configured to receive a voltage in such a manner that directions of shearing of the two piezoelectric elements are opposite, a first electrode and a second electrode configured to hold the piezoelectric elements therebetween, and a supporting plate attached to the first electrode with an insulating layer therebetween, attached to the load beam and configured to support the load beam.
A magnetic disk drive comprising:
- a head configured to read information from a disk recording medium and to write information to the disk recording medium;
- and
- a rotatable head suspension assembly configured to support the head,
- wherein the head suspension assembly comprises a load beam configured to support the head and a microactuator configured to swing the load beam, and
- wherein the microactuator comprises two piezoelectric elements configured to shear when the two piezoelectric elements are aligned next to each other and configured to receive a voltage in such a manner that directions of shearing of the two piezoelectric elements are opposite, a first electrode and a second electrode configured to hold the piezoelectric elements therebetween, and a supporting plate attached to the first electrode with an insulating layer therebetween, attached to the load beam and configured to support the load beam.
Dependencies are inferred from the claim text.