Micro-actuator, micro-actuator suspension, and head gimbal assembly with the same

摘要

A micro-actuator for a head gimbal assembly includes a support frame integrated with a suspension flexure of the head gimbal assembly, a block, and a pair of PZT elements. The support frame includes a bottom support, a top support adapted to support a slider of the head gimbal assembly, and a pair of side arms that interconnect the bottom support and the top support. The side arms extend vertically from respective sides of the bottom support and the top support. The block is mounted to the bottom support to provide resonance balance. Each PZT element is mounted to a respective side arm of the support frame and a respective side of the block. The PZT elements are excitable to cause selective movement of the side arms.