Head stack assembly having an actuator body with multiple slots adjacent to a bore
View Patent ↗A head stack assembly for a disk drive includes an actuator body. The actuator body includes a pair of sides, a bore defining a longitudinal axis, a first slot extending between the pair of sides, a second slot extending along a direction perpendicular to the longitudinal axis, the second slot extending from the first slot to the bore. The head stack assembly further includes a coil portion cantilevered from the actuator body in one direction and an actuator arm cantilevered from the actuator body in a direction opposite from the coil portion.
1. A head stack assembly for a disk drive, comprising:
an actuator body including:
a pair of sides;
a bore defining a longitudinal axis;
a first slot extending between the pair of sides;
a second slot extending along a direction perpendicular to the longitudinal axis, the second slot extending from the first slot to the bore;
a coil portion cantilevered from the actuator body in one direction;
an actuator arm cantilevered from the actuator body in a direction opposite from the coil portion;
at least one load beam attached to the actuator arm; and
a bearing assembly fitted into the bore,
wherein the bore and the first and second slots collectively define a pair of independently flexible actuator body segments, and wherein each of the independently flexible actuator body segments includes a supported end adjoining a remainder of the actuator body, and a free end, and wherein both the supported end and the free end are in contact with the bearing assembly.
2. A disk drive comprising:
a base;
a spindle motor attached to the base;
a disk positioned on the spindle motor;
a head stack assembly coupled to the base;
the head stack assembly including:
an actuator body including:
a pair of sides;
a bore defining a longitudinal axis;
a first slot extending between the pair of sides;
a second slot extending along a direction perpendicular to the longitudinal axis, the second slot extending from the first slot to the bore;
a coil portion cantilevered from the actuator body in one direction;
an actuator arm cantilevered from the actuator body in a direction opposite from the coil portion;
at least one load beam attached to the actuator arm; and
a bearing assembly fitted into the bore,
wherein the bore and the first and second slots collectively define a pair of independently flexible actuator body segments, and wherein each of the independently flexible actuator body segments includes a supported end adjoining a remainder of the actuator body, and a free end, and wherein both the supported end and the free end are in contact with the bearing assembly.
3. A head stack assembly for a disk drive, comprising:
an actuator body including:
a pair of sides;
a bore defining a longitudinal axis;
a first slot extending between the pair of sides;
a second slot extending along a direction perpendicular to the longitudinal axis, the second slot extending from the first slot to the bore;
a coil portion cantilevered from the actuator body in one direction;
an actuator arm cantilevered from the actuator body in a direction opposite from the coil portion; and
at least one load beam attached to the actuator arm,
wherein the second slot opens into the bore and the bore has a generally circular cross section that is interrupted where the second slot opens into the bore.
4. The head stack assembly of claim 3 , wherein the second slot opens into the first slot at a generally orthogonal intersection between the second slot and the first slot.
5. A disk drive comprising:
a base;
a spindle motor attached to the base;
a disk positioned on the spindle motor;
a head stack assembly coupled to the base;
the head stack assembly including:
an actuator body including:
a pair of sides;
a bore defining a longitudinal axis;
a first slot extending between the pair of sides;
a second slot extending along a direction perpendicular to the longitudinal axis, the second slot extending from the first slot to the bore;
a coil portion cantilevered from the actuator body in one direction;
an actuator arm cantilevered from the actuator body in a direction opposite from the coil portion; and
at least one load beam attached to the actuator arm,
wherein the second slot opens into the bore and the bore has a generally circular cross section that is interrupted where the second slot opens into the bore.
6. The disk drive of claim 5 , wherein the second slot opens into the first slot at a generally orthogonal intersection between the second slot and the first slot.