| US 7,538,984 B2 | ||
| Rotational PZT micro-actuator with a rotatable plate | ||
| MingGao Yao, DongGuan (China) | ||
| Assigned to SAE Magnetics (H.K.) Ltd., Hong Kong (China) | ||
| Filed on Dec. 16, 2005, as Appl. No. 11/304,544. | ||
| Prior Publication US 2007/0139824 A1, Jun. 21, 2007 | ||
| Int. Cl. G11B 5/56 (2006.01) | ||
| U.S. Cl. 360—294.4 [360/294.6] | 22 Claims |
| 1. A micro-actuator for a head gimbal assembly, comprising:
a metal frame including
a top support adapted to support a slider of the head gimbal assembly, and
a pair of side arms extending perpendicularly from respective sides of the top support,
the top support including a rotatable plate and connection arms that couple the rotatable plate to respective side arms;
a PZT element mounted to each of the side arms, each PZT element being excitable to cause the side arms to bend in opposite
directions; and
a rigid beam mounted between the side arms at an end opposite the top support and adapted to connect the metal frame to a
suspension of the head gimbal assembly.
|