Dimple pivot post for a rotary co-located microactuator

A head gimbal assembly for use in a data storage device, comprising:

• a read/write head;
• a resilient hinged mounting structure having a center for supporting the read/write head;
• a slider coupled to the mounting structure;
• a dimple post formed on a surface of the mounting structure that is proximal to the read/write head and formed about the center of the mounting structure;
• and
• a pair of adhesive pads extending between the mounting structure and the read/write head to bind the mounting structure to the read/write head, the adhesive pads being spaced apart from each other and from the dimple post;
• wherein the mounting structure comprises at least two hinged islands that are generally disposed opposite to each other relative to the center of the mounting structure;
• wherein the two pads bond to the two hinged islands;
• wherein the two pads and the dimple post each have a height, the heights of the two pads and the dimple post being substantially equal;
• and
• wherein the two hinged islands are offset along the transverse axis relative to the center of the mounting structure so that the two pads rotate about the center of the mounting structure within the two gaps, during a track-follow control actuation.

A data storage device comprising:

• a head gimbal assembly comprising a read-write head;
• a resilient hinged mounting structure having a center;
• a pair of adhesive pads binding the mounting structure to the read-write head, the adhesive pads being space apart from each other;
• and
• a dimple post substantially coaxial with the center and disposed between the adhesive pads;
• wherein the mounting structure comprises at least two hinged islands that are generally disposed opposite to each other relative to the center of the mounting structure, a first one of the adhesive pads contacting a first one of the hinged islands and a second of the adhesive pads contacting a second one of the hinged islands;
• wherein the hinged islands are offset along a transverse axis relative to the center of the mounting structure;
• wherein a conductive path and a dam are formed on each of the adhesive pads that are formed on each hinged island;
• and
• wherein the dam on each pad comprises an adhesive dam having a height, the heights of the dams on the hinged island are substantially equal, and the dimple post has a height that is substantially equal to the height of the dams, whereby the dimple post abuts the slider.

A method for causing a structural deformation of a resilient hinged mounting structure to rotate a head in a data storage system during a track-follow control actuation operation, comprising:

• defining a center of the resilient hinged mounting structure;
• mounting a slider onto the mounting structure;
• forming a dimple post on the mounting structure about the center of the mounting structure;
• and
• bonding the mounting structure to the slider with two adhesive pads, the adhesive pads being spaced apart from each other on opposite sides of the dimple post;
• wherein the mounting structure comprises at least two hinged islands that are generally disposed opposite to each other relative to the center of the mounting structure, a first one of the adhesive pads contacting a first one of the hinged islands and a second of the adhesive pads contacting a second one of the hinged islands;
• wherein the hinged islands are offset along a transverse axis relative to the center of the mounting structure;
• wherein a conductive path and a dam are formed on each of the adhesive pads that are formed on each hinged island;
• and
• wherein the dam on each pad comprises an adhesive dam having a height, the heights of the dams on the hinged islands are substantially equal, and the dimple post has a height that is substantially equal to the height of the dams, whereby the dimple post abuts the slider.