Dual stage suspension with PZT actuators arranged to improve actuation in suspensions of short length
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorVictor Wing Chun Shum
Life of this patent
Estimating the term…
Abstract
A suspension for a disk drive includes a mount plate adapted to mount to a primary actuator, a functional end portion adapted to carry a slider, and a hinge disposed between the mount plate and the functional end portion. A mounting configuration is provided on the mount plate for mounting the suspension to the primary actuator. A pair of secondary actuators are mounted in longitudinally overlapping relationship with the mounting configuration so as to minimize the impact of the secondary actuators on suspension length. The secondary actuators are operatively connected to the hinge for producing sway displacement of the slider.
Claims28
A disk drive having a suspension, said suspension comprising:
- a mount plate for mounting to an actuator arm;
- a functional end portion for carrying a slider;
- hinge beams disposed between said mount plate and said functional end portion;
- a mounting configuration on said mount plate for mounting said suspension to said actuator arm;
- a pair of actuator receiving gaps in said mount plate that are each defined at one end by a static actuator support region and at another end by a rotational element adapted to rotate under action of an actuator, each of said rotational elements having a free end operatively connected to one of said hinge beams;
- said actuator receiving gaps being in overlapping longitudinal relationship with said mounting configuration and being open between said static actuator support region and said rotational elements so as to allow said rotational elements to rotate about a central portion of said mount plate;
- and
- a pair of actuators arranged in said actuator receiving gaps so as to span said open portions thereof and in overlapping longitudinal relationship with said mounting configuration and operatively connected to said hinge beams, said actuators being adapted to produce sway displacement of said functional end portion.
A disk drive having a suspension, said suspension comprising:
- a first end portion for mounting to an actuator arm;
- a second end portion for carrying a slider;
- bend-compliant means for providing a bend-compliant interconnection between said first end portion and said second end portion;
- suspension mounting means for mounting said first end portion to said actuator arm;
- a pair of actuator receiving means in said first end portion that are each defined at one end by a static actuator support region and at another end by a rotational element adapted to rotate under action of an actuator, each of said rotational elements having a free end operatively connected to said bend-compliant means;
- said actuator receiving means being in overlapping longitudinal relationship with said suspension mounting means and being open between said static actuator support region and said rotational elements so as to allow said rotational elements to rotate about a central portion of said first end portion;
- and
- actuation means arranged in said actuator receiving means so as to span said open portions thereof and in overlapping longitudinal relationship with said suspension mounting means for engaging said bend-compliant means and producing sway displacement of said second end portion.
A suspension for a disk drive, comprising:
- a mount plate adapted to mount to a primary actuator;
- a functional end portion adapted to carry a slider;
- hinge beams disposed between said mount plate and said functional end portion;
- a mounting configuration on said mount plate for mounting said suspension to said primary actuator;
- a pair of actuator receiving gaps in said mount plate that are each defined at one end by a static actuator support region and at another end by a rotational element adapted to rotate under action of an actuator, each of said rotational elements having a free end operatively connected to one of said hinge beams;
- said actuator receiving gaps being in overlapping longitudinal relationship with said mounting configuration and being open between said static actuator support region and said rotational elements so as to allow said rotational elements to rotate about a central portion of said mount plate;
- and
- a pair of secondary actuators arranged in said actuator receiving gaps so as to span said open portions thereof and in longitudinally overlapping relationship with said mounting configuration and operatively connected to said hinge beams for producing sway displacement of said slider.
Dependencies are inferred from the claim text.