Patent ID: 7551405

Claim:
A head gimbal assembly comprising: a slider; a micro-actuator to adjust the position of the slider; and a suspension that supports the slider and the micro-actuator; wherein the micro-actuator comprises: two side arms; a load plate for supporting the slider, which is connected with the side arms and rotatable relative thereto in response to selective movement of the side arm or side arms; a pair of PZT elements both connected with the side arms; a support shaft coupled with the suspension, the support shaft being connected with the side arms and positioned between the PZT elements; the PZT elements being excitable by a predetermined voltage to move in opposite directions to effect selective movement of the side arms and rotation of the load plate and slider, and wherein the load plate comprises: a support plate connected with the slider; and two connecting plates connecting the support plate with the two side arms, respectively.