摘要:
A suspension comprises a load beam, a base plate, and a hinge member. The hinge member has an end portion lapped and fixed on the proximal portion of the load beam, a base plate mounting portion lapped and fixed on the base plate, and flexible portions situated between the end portion and the base plate mounting portion. The flexible portions are situated individually on the opposite sides of an opening formed in the hinge member, and are elastically deformable in its thickness direction. An end portion of the base plate and the hinge member are fixed on each other by means of laser welds in positions near the flexible portions. The laser welds are formed individually in regions that extend in the axial direction of the hinge member from the flexible portions.
摘要:
A suspension comprises a baseplate having a boss portion, a beam portion with a flexure, and a hinge member. The hinge member includes a connecting portion that can bend in the thickness direction thereof between the baseplate and the beam portion. If the length of the suspension from a pivot portion on the distal end portion of the beam portion to the center of the boss portion is 14.5 mm, the thickness of the baseplate is 0.175 mm or greater, the width of the baseplate is 4.5 mm or greater, the length of the connecting portion of the hinge member is 0.7 mm or shorter, and the length of the baseplate is 5.04 mm or shorter.
摘要:
A head suspension with a piezoelectric element involves simple wiring and realizes high reliability, the head suspension has a base plate, a load beam connected to the base plate, a flexure attached to the load beam, and a piezoelectric actuator having a piezoelectric element arranged between the base plate and the load beam, the piezoelectric element is configured to deform according to a state of applied voltage and move a front end of the load beam in a sway direction according to the deformation, and the piezoelectric element has first and second piezoelectric parts that are oppositely polarized and deform according to a state of applied voltage, a common electrode formed over first surfaces of the first and second piezoelectric parts, a first electrode formed on a second surface of the first piezoelectric part, and a second electrode formed on a second surface of the second piezoelectric part.
摘要:
An apparatus surely measures the vibration characteristic of a head gimbal assembly and has a wide range of resonance frequencies to be set, the apparatus has a first laser Doppler vibrometer to detect a vibration velocity of a shaker, a second laser Doppler vibrometer to detect a vibration velocity of a head of the head gimbal assembly fixed to a fixture, and a reflection mirror to orthogonally reflect a laser beam emitted from the first laser Doppler vibrometer toward the fixture fixed to the shaker, and the apparatus finds the vibration characteristic of the head gimbal assembly according to the detected vibration velocities.
摘要:
A head suspension with a piezoelectric element involves simple wiring and realizes high reliability, the head suspension has a base plate, a load beam connected to the base plate, a flexure attached to the load beam, and a piezoelectric actuator having a piezoelectric element arranged between the base plate and the load beam, the piezoelectric element is configured to deform according to a state of applied voltage and move a front end of the load beam in a sway direction according to the deformation, and the piezoelectric element has first and second piezoelectric parts that are oppositely polarized and deform according to a state of applied voltage, a common electrode formed over first surfaces of the first and second piezoelectric parts, a first electrode formed on a second surface of the first piezoelectric part, and a second electrode formed on a second surface of the second piezoelectric part.
摘要:
A slider supporting apparatus is provided with a flexure formed of a metal plate having spring characteristics. The flexure comprises a gimbals portion including a tongue, a first support portion which supports one longitudinal end of a slider, a second support portion which supports the other end of the slider, and a spring portion composed of a pair of flat springs. Convexes and concaves of each flat spring are alternately formed along a surface direction of the flexure by etching. The flat springs extend to a length which allows the slider to be inserted between the support portions when subjected to a tensile load, and contract to a length such that the slider can be held between the support portions when subjected to no tensile load.
摘要:
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.
摘要:
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. Each piezoelectric ceramic element is stored in an opening portion in the actuator base and fixed to the actuator base by an adhesive layer. The adhesive layer includes an electrical insulating adhesive agent and a large number of fillers of an insulating material mixed in the adhesive agent. The fillers are interposed between each piezoelectric ceramic element and the actuator base to secure a clearance for electrical insulation between the two.
摘要:
A head suspension has a load beam and a piezoelectric actuator, the actuator base being connected to the base part of the load beam and having at least an opening. A nonconductive adhesive applied at least between the circumferential edge of the opening and a circumferential side face of the piezoelectric element and between a bottom receiver and the bottom face of the piezoelectric element is configured to adhere the piezoelectric element to the opening.
摘要:
A head suspension has a base plate, a load beam, and a piezoelectric element that is centrally located and deforms in response to applied power to precisely move a front end of the load beam. The head suspension includes an opening formed in the base plate to receive the piezoelectric element and a support member joined with the base plate, partly protruding into the opening, and configured to support an electrode of the piezoelectric element. The support member includes a pair of integral supports to support the electrode, and a pair of integral support links to connect the supports to each other outside the piezoelectric element.