Suspension for disc drive
AssigneeNHK Spring Co., Ltd.
InventorsTatsuhiko Nishida, Toshiki Ando, Masao Hanya
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Abstract
A suspension for disc drive comprises a load beam fitted with a flexure, an actuator base including a base plate, a hinge member thinner than the base plate, and a pair of piezoelectric ceramic elements. The piezoelectric ceramic elements displace the distal end portion of the load beam in a sway direction when supplied with voltage. Each piezoelectric ceramic element is stored in an opening portion in the actuator base. A covering material such as an adhesive agent that fills the space between the peripheral edge portion of the piezoelectric ceramic element and the actuator base forms a cover portion that covers the opposite end faces and the opposite side faces of the ceramic element.
Claims14
A suspension for disc drive, comprising:
- a load beam provided with a flexure;
- an actuator base provided on the proximal portion of the load beam;
- a piezoelectric ceramic element mounted on the actuator base and adapted to be distorted to displace the load beam when voltage is applied thereto;
- and
- a cover portion formed of a covering material filling a space between a peripheral edge portion of the piezoelectric ceramic element and the actuator base, said cover portion being applied over an entire circumference of the piezoelectric ceramic element so as to entirely cover longitudinally opposite end faces and side faces of the piezoelectric ceramic element, including cut surfaces of the piezoelectric ceramic element, thereby preventing generation of particles from the end faces and side faces of the piezoelectric ceramic element.
Dependencies are inferred from the claim text.