Suspension with strengthening plate, head gimbal assembly, and disk drive unit with the same
AssigneeSAE Magnetics (H.K.) Ltd.
InventorsMingGao Yao, Takashi Honda
Life of this patent
Estimating the term…
Abstract
A suspension for a HGA includes a base plate, a flexure having a suspension tongue for holding a slider, a load beam, and a hinge that are assembled together; wherein a strengthening plate is formed on the suspension tongue to increase stiffness of the suspension tongue. So the invention enable the use of the suspension with lower pitch and roll stiffness while preventing the suspension deformation. This ensures the slider mounted on the suspension have a good flying performance. The invention also discloses a HGA with such a suspension and a disk drive unit having such an HGA.
Claims15
A suspension for a head gimbal assembly comprising:
- a base plate, a flexure having a suspension tongue for holding a slider, a load beam, and a hinge that are assembled together;
- wherein
- a strengthening plate is formed on the suspension tongue to increase stiffness of the suspension tongue, wherein
- the strengthening plate extends from a leading end to a trailing end of the suspension tongue, which comprises a cover layer, a substrate layer, and an electric layer sandwiched between the cover layer and the substrate layer, and
- the cover layer, the substrate layer, and the electric layer form a protrusion with a certain thickness to support the micro-actuator.
A head gimbal assembly comprising:
- a slider;
- a micro-actuator;
- and
- a suspension for supporting the slider and the micro-actuator;
- wherein
- the suspension comprises a base plate, a flexure having a suspension tongue for holding a slider, a load beam, and a hinge that are assembled together;
- wherein
- a strengthening plate is formed on the suspension tongue to increase stiffness of the suspension tongue, wherein
- the strengthening plate extends from a leading end to a trailing end of the suspension tongue, which comprises a cover layer, a substrate layer, and an electric layer sandwiched between the cover layer and the substrate layer, and
- the cover layer, the substrate layer, and the electric layer form a protrusion with a certain thickness to support the micro-actuator.
A disk drive unit comprising:
- a head gimbal assembly;
- a drive arm to connect with the head gimbal assembly;
- a disk;
- and
- a spindle motor to spin the disk;
- wherein the head gimbal assembly comprises:
- a slider;
- a micro-actuator;
- and
- a suspension for supporting the slider and the micro-actuator;
- wherein
- the suspension comprises a base plate, a flexure having a suspension tongue for holding a slider, a load beam, and a hinge that are assembled together;
- wherein
- a strengthening plate is formed on the suspension tongue to increase stiffness of the suspension tongue, wherein
- the strengthening plate extends from a leading end to a trailing end of the suspension tongue, which comprises a cover layer, a substrate layer, and an electric layer sandwiched between the cover layer and the substrate layer, and
- the cover layer, the substrate layer, and the electric layer form a protrusion with a certain thickness to support the micro-actuator.
Dependencies are inferred from the claim text.