| US 7,468,869 B2 | ||
| Micro-actuator, micro-actuator suspension, and head gimbal assembly with the same | ||
| MingGao Yao, DongGuan (China); and Masashi Shiraishi, HongKong (China) | ||
| Assigned to SAE Magnetics (H.K.) Ltd., Hong Kong (China) | ||
| Filed on May 01, 2006, as Appl. No. 11/414,546. | ||
| Prior Publication US 2007/0253115 A1, Nov. 01, 2007 | ||
| Int. Cl. G11B 5/56 (2006.01) | ||
| U.S. Cl. 360—294.4 | 20 Claims |
| 1. A micro-actuator for a head gimbal assembly, comprising:
a support frame integrated with a suspension flexure of the head gimbal assembly, the support frame including
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 extending vertically from respective sides of the bottom support and the top support;
a block mounted to the bottom support to provide resonance balance; and
a pair of PZT elements, each PZT element mounted to a respective side arm of the support frame and a respective side of the
block, wherein the PZT elements are excitable to cause selective movement of the side arms.
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