Patent ID: 6362938
Filing Date: 2002-03-26
Classification: G11B

Abstract:
A fine drive unit comprising: a suspension arm for supporting a slider having a head portion; a rotation support for supporting a portion of the suspension arm and allowing the suspension arm to undergo pivotal movement about the rotation support; a support member disposed opposite to the suspension arm; a coupling disposed on the support member and connected to the suspension arm; a spring disposed between the support member and the coupling; and a fine head drive section having bi-directional cantilevers and piezoelectric members each disposed on a respective one of the cantilevers, each of the cantilevers having a free end and an end opposite the free end and connected to the support member; wherein when a voltage having a preselected frequency is applied to the piezoelectric members, the cantilevers are vibrated to cause the cantilevers to contact the suspension arm and thereby finely drive the head portion.