Hard disk drive gimbal design with high yaw mode
A trace gimbal is described herein. In some embodiments, the trace gimbal includes outer struts including a front outrigger at a distal end of the trace gimbal and a rear outrigger at a proximal end of the trace gimbal. The front outrigger includes a distal front outrigger and a proximal front outrigger, and the rear outrigger includes a distal rear outrigger and a proximal rear outrigger. The trace gimbal further includes a middle strut extending in a width direction of the trace gimbal and adjoining the proximal front outrigger to the rear outrigger, and an inner strut connecting the middle strut to a slider tongue. The inner strut includes a slot, and the inner strut and the middle strut adjoin the outer gimbal struts to the slider tongue.
1 . A trace gimbal comprising:
outer struts including a front outrigger at a distal end of the trace gimbal and a rear outrigger at a proximal end of the trace gimbal, the front outrigger including a distal front outrigger and a proximal front outrigger, the rear outrigger including a distal rear outrigger and a proximal rear outrigger;
a middle strut extending in a length direction of the trace gimbal and adjoining the proximal front outrigger to the rear outrigger; and
an inner strut connecting the middle strut to a slider tongue, the inner strut comprising a first portion connecting to the middle strut, a second portion connecting to the slider tongue, and a central portion comprising a semi-circle feature extending outwardly from the inner strut such that a width of the central portion exceeds a width of the first portion and the second portion.
2 . The trace gimbal of claim 1 , comprising at least one microactuator mounted on the slider tongue, wherein the inner strut supports the slider tongue.
3 . The trace gimbal of claim 1 wherein the inner strut includes at least one slot in a central portion of the inner strut.
4 . The trace gimbal of claim 3 wherein the at least one slot is partially or fully covered by a polyimide and/or copper layer.
5 . The trace gimbal of claim 1 , wherein the proximal front outrigger includes a first cross-section width and the distal front outrigger includes a second cross-section width, wherein the second cross-section width is about a same dimension as the first cross-section width of the proximal front outrigger.
6 . The trace gimbal of claim 5 , wherein the first cross-section width and the second cross-section width of the front outrigger are between 0.05 mm and 0.10 mm.
7 . The trace gimbal of claim 1 , wherein the distal rear outrigger includes a first cross-section width and the proximal rear outrigger includes a second cross-section width larger than the first cross-section width.
8 . The trace gimbal of claim 7 , wherein the first cross-section width of the distal rear outrigger is between 0.10 mm and 0.20 mm.
9 . A suspension comprising:
a trace gimbal, the trace gimbal comprising:
outer struts including a front outrigger at a distal end of the trace gimbal and a rear outrigger at a proximal end of the trace gimbal, the front outrigger including a distal front outrigger and a proximal front outrigger, the rear outrigger including a distal rear outrigger and a proximal rear outrigger;
a middle strut extending in a length direction of the trace gimbal and adjoining the proximal front outrigger to the rear outrigger; and
an inner strut connecting the middle strut to a slider tongue, the inner strut comprising a first portion connecting to the middle strut, a second portion connecting to the slider tongue, and a central portion comprising a semi-circle feature extending outwardly from the inner strut such that a width of the central portion exceeds a width of the first portion and the second portion.
10 . The suspension of claim 9 , further comprising at least one microactuator mounted on the slider tongue, wherein the inner strut supports the slider tongue.
11 . The suspension of claim 9 , wherein the proximal front outrigger includes a first cross-section width and the distal front outrigger includes a second cross-section width, wherein the second cross-section width is about a same dimension as the first cross-section width of the proximal front outrigger.
12 . The suspension of claim 9 , wherein the distal rear outrigger includes a first cross-section width and the proximal rear outrigger includes a second cross-section width larger than the first cross-section width.
13 . The suspension of claim 9 , further comprising at least one slot in a central portion of the inner strut.
14 . The suspension of claim 13 wherein the at least one slot is partially or fully covered by a polyimide and/or copper layer.