29results about "Arm with actuators" patented technology

A hard disk drive suspension includes first piezoelectric elements provided at a first position, and second piezoelectric elements provided at a second position. A conductor is connected to the first piezoelectric elements. Conductors are connected to the second piezoelectric elements, respectively. A measurement device includes a vibration signal generation unit which supplies vibration signals to the second piezoelectric elements, a vibration measurement unit which detects vibration generated at the suspension, and a ground connection unit. The conductor electrically connected to the first piezoelectric elements is connected to a ground via a resistor of a ground connection unit.

A gimbal head assembly (HGA), such as that used in a hard disk drive (HDD), comprises a load beam formed with proximal openings and a bend coupled to the load beam. The bend includes a tongue section to which a fine actuator is coupled, and the tongue section includes corner sections proximal to the fine actuator. Each opening of the load beam is shaped and positioned to overlap the corner section of the bend, preventing contact between the load beam and the corner section in response to shock events. This creates a gimbal clearance of the bend relative to the load beam, protecting the integrity of the piezoelectric fine actuator elements from, for example, non-operational shock events.

A data storage device includes a stack of data storage disks, a head stack assembly, and a piezoelectric motor. The head stack assembly includes an arm, a load beam, a head and a tail. The arm is configured for pivotal motion about a longitudinal axis of an actuator shaft. The load beam is attached to the arm. The head is attached to the load beam and is configured to interact with a surface of one of the disks, the surface defining an x-y plane. The tail is disposed on an opposite side of the actuator shaft from the arm and has a first engagement surface that is parallel to the x-y plane. The piezoelectric motor includes a piezoelectric element and a contact tip. The piezoelectric element comprises a first mounting surface. The contact tip is disposed at the first mounting surface and frictionally contacts the engagement surface.

A head gimbal assembly (HGA), such as for a hard disk drive (HDD), includes: a load beam formed to have a proximal opening therethrough; and a flexure coupled with the load beam, where the flexure includes a tongue portion to which a fine actuator is coupled, and the tongue portion includes a corner portion proximal to the fine actuator. Each opening of the load beam is shaped and positioned to cover the corner portion of the flexure to avoid contact between the load beam and the corner portion in response to an impact event. A flexure gimbal clearance relative to the load beam is thereby achieved to protect the integrity of the piezoelectric elements of the fine actuator from, for example, non-operational impact events.

A suspension assembly comprises a load beam including a proximal end terminating in a hinge, a gimbal assembly mounted to the load beam, a base plate, and PZT actuators. The base plate comprising a distal portion connected to the hinge, a proximal portion, and a neck portion disposed between the distal portion and the proximal portion, wherein the neck portion comprising side edges facing away from each other, wherein the side edges, the distal portion and the proximal portion define openings, wherein each of the side edges includes a protrusion at a center of the neck portion facing one of the openings. Each of the PZT actuators is disposed in one of the openings and mounted to the proximal portion and the distal portion.

A head gimbal assembly includes a gimbal having a base portion and a tongue that are joined together by a neck portion, a circuit mounted on the gimbal, a slider mounted on the tongue and electrically connected to the circuit, a first PZT actuator having a proximal end mounted on a first bonding site of the circuit and a distal end mounted on a second bonding site of the circuit, and a second PZT actuator having a proximal end mounted on a third bonding site of the circuit and a distal end mounted on a fourth bonding site of the circuit. The first and third bonding sites do not overlap with and are not directly supported by the base portion. The second and fourth bonding sites overlap with and are directly supported by the tongue.

A suspension assembly includes a load beam terminating in a hinge, a gimbal assembly mounted to the load beam, and a base plate connected to the hinge and including an opening. A PZT actuator is disposed in the opening and includes opposing first and second ends. The PZT actuator includes an active region and an inactive region each extending between opposite first and second ends, a PZT material disposed in both the active region and the inactive region, and first and second electrodes, and an active region configured to cause active expansion and contraction of the PZT material in the active region in response to a voltage difference applied to the first electrode and the second electrode, and configured to not cause active expansion and contraction of the PZT material in the inactive region in response to a voltage difference applied to the first electrode and the second electrode of the PZT actuator.

A head gimbal assembly (HGA), such as for a hard disk drive (HDD), includes a load beam formed with proximal openings therethrough and a flexure coupled with the load beam, where the flexure includes a tongue portion to which a fine actuator is coupled and the tongue portion includes corner portions proximal to the fine actuator. Each opening of the load beam is shaped and positioned to overlay the corner portion of the flexure to avoid contact between the load beam and the corner portion in response to shock events. Flexure gimbal clearance relative to the load beam is thereby enabled to protect the integrity of the fine actuator piezoelectric elements from non-operational shock events for example.

A suspension of an embodiment includes a first actuator including a piezoelectric element, a second actuator including a piezoelectric element, and a third actuator including a piezoelectric element. A first conductor supplies a first alternating current to the first actuator. A second conductor supplies a second alternating current to the second actuator. A third conductor supplies a third alternating current with a phase opposite to the second alternating current to the third actuator. The first conductor includes a first and a second proximity portions. The first proximity portion extends along the second conductor in the longitudinal direction of the wiring unit. The second proximity portion extends along the third conductor in the longitudinal direction of the wiring unit.

A head gimbal assembly (HGA), such as for a hard disk drive (HDD), includes a load beam formed with proximal openings therethrough and a flexure coupled with the load beam, where the flexure includes a tongue portion to which a fine actuator is coupled and the tongue portion includes corner portions proximal to the fine actuator. Each opening of the load beam is shaped and positioned to overlay the corner portion of the flexure to avoid contact between the load beam and the corner portion in response to shock events. Flexure gimbal clearance relative to the load beam is thereby enabled to protect the integrity of the fine actuator piezoelectric elements from non-operational shock events for example.

According to one embodiment, a disk device includes a disk-shaped recording medium, a magnetic head including a write head, a read head, and a heater configured to adjust a gap between the magnetic head and the recording medium, a suspension assembly supporting the magnetic head, a micro actuator including a piezoelectric element on the suspension assembly, and a controller configured to set a drive voltage of the piezoelectric element in accordance with a difference between a touchdown output in time of driving the piezoelectric element and a touchdown output in time of non-driving the piezoelectric element.

A flexure of a suspension for a disk drive includes a metal base and a wiring portion provided along the metal base and including a base insulation layer, a conductor layer overlaid on the base insulation layer, and a cover insulation layer overlaid on the conductor layer. The flexure includes a first area on which an electronic component is mounted and a second area aligned alongside the first area, and the first area includes a thin-walled portion which overlaps the electronic component and having a thickness less than a thickness of the second area.

To provide a measuring device that can suppress the effects of crosstalk. [Solution] A suspension 10A for a hard disk drive, as an example of a workpiece, has piezoelectric elements 30R and 30L provided at a first position and piezoelectric elements 40R and 40L provided at a second position. Conductors 33 are connected to the piezoelectric elements 30R and 30L. Conductors 41 and 42 are connected to the piezoelectric elements 40R and 40L, respectively. The measuring device 100 has an excitation signal generation unit that supplies excitation signals S1 and S2 to the piezoelectric elements 40R and 40L, a vibration measurement unit that detects vibrations generated in the suspension 10A, and a ground connection unit 113. Conductors 33 that are in conductivity with the non-excitation piezoelectric elements 30R and 30L are connected to ground GND via the resistor R1 of the ground connection unit 113.

A hard disk drive suspension (10A) includes first piezoelectric elements (30R, 30L) provided at a first position and second piezoelectric elements (40R, 40L) provided at a second position. A conductor (33) is connected to the first piezoelectric elements (30R, 30L). Conductors (41, 42) are respectively connected to the second piezoelectric elements (40R, 40L). The measurement device (100) includes a vibration signal generation unit that supplies vibration signals (S1, S2) to the second piezoelectric elements (40R, 40L), a vibration measurement unit that detects vibration generated by the suspension (10A), and a ground connection unit (113). A conductor (33) electrically connected to the first piezoelectric elements (30R, 30L) is grounded (GND) through a resistor (R1) of a ground connection unit (113).

PZT microactuators, such as those used in hard disk drives, have a constraining layer bonded to the side opposite the PZT mounting surface. The constraining layer is made of a stiff, resilient material, such as stainless steel. The constraining layer covers most or all of the top surface of the PZT and provides electrical connections to the PZT not covered by the constraining layer. The constraining layer increases the effective stroke length by reducing the bending of the attached PZT, or further increases the effective stroke length by reversing the sign of bending. The constraining layer may be one or more active layers of PZT material that act in the opposite direction to the main PZT layer. The constraining layer may be thinner than the main PZT layer.

A thin-film piezoelectric material elements are arranged on a thin-film piezoelectric material substrate. The thin-film piezoelectric material substrate includes an insulator on Si substrate including a substrate including silicon and an insulating layer on a surface of the substrate. The thin-film piezoelectric material element includes a thin-film laminated part on a top surface of the insulating layer. The thin-film laminated part includes a YZ seed layer including yttrium and zirconium, and formed on the top surface; a lower electrode film laminated on the YZ seed layer; a piezoelectric material film including lead zirconate titanate, shown by a formula Pb (ZrxTi(1-x)) O3(0≤x≤1), and an upper electrode film laminated on the piezoelectric material film. The thin-film laminated part further includes an upper piezoelectric-material protective-film, laminated on the upper side of the upper electrode film.

To provide a suspension for a disk drive that can reduce crosstalk in the wiring section. [Solution] The suspension 10A has a first actuator (piezoelectric elements 30R, 30L), a second actuator (piezoelectric element 40R), and a third actuator (piezoelectric element 40L). The first conductor 33 supplies a first alternating current to the first actuator. The second conductor 41 supplies a second alternating current to the second actuator. The third conductor 42 supplies a third alternating current to the third actuator that is in the opposite phase to the second alternating current. The first conductor 33 has a first proximity portion 45 and a second proximity portion 46. The first proximity portion 45 extends along the second conductor 41 in the longitudinal direction of the wiring portion 21. The second proximity portion 46 extends along the third conductor 42 in the longitudinal direction of the wiring portion 21.

To provide a disk device capable of suppressing decreasing stability of positioning a magnetic head for the magnetic disk.SOLUTION: A disk device according to one embodiment includes a piezoelectric element and a flexure. The piezoelectric element includes a first electrode and a second electrode. The flexure includes a first portion and a second portion to which the second electrode is bonded. The first portion has a first surface to which the first electrode is bonded. The second portion has a second surface to which the magnetic head is bonded. The magnetic head has a third surface facing the first surface and the second surface. The first surface faces the end portion of the third surface in a first direction. The second surface faces the end portion of the third surface in a second direction. The distance between the first surface and the end portion of the third surface in the first direction is longer than the distance between the second surface and the end portion of the third surface in the second direction.SELECTED DRAWING: Figure 2

A suspension (10A) according to an embodiment includes a first actuator (AC1) including piezoelectric elements (30R, 30L), a second actuator (AC2) including a piezoelectric element (40R), and a third actuator (AC3) including a piezoelectric element (40L). A first conductor (33) supplies a first alternating current to the first actuator (AC1). A second conductor (41) supplies a second alternating current to the second actuator (AC2). A third conductor (42) supplies a third alternating current having a phase opposite to that of the second alternating current to the third actuator (AC3). The first conductor (33) includes a first adjacent portion (45) and a second adjacent portion (46). The first adjacent portion (45) extends longitudinally along the second conductor (41) with the wiring unit (21). The second adjacent portion (46) extends longitudinally along the third conductor (42) with the wiring unit (21).

A suspension assembly comprises a load beam including a proximal end terminating in a hinge, a gimbal assembly mounted to the load beam, a base plate, and PZT actuators. The base plate comprising a distal portion connected to the hinge, a proximal portion, and a neck portion disposed between the distal portion and the proximal portion, wherein the neck portion comprising side edges facing away from each other, wherein the side edges, the distal portion and the proximal portion define openings, wherein each of the side edges includes a protrusion at a center of the neck portion facing one of the openings. Each of the PZT actuators is disposed in one of the openings and mounted to the proximal portion and the distal portion.

According to one embodiment, a disk device includes two magnetic disks opposing each other at intervals of 1.2 to 1.5 mm, and at least two suspension assemblies movable respectively between the two magnetic disks. Each of the suspension assemblies includes a base plate, a load beam extending from the base plate, a tab extending from a distal end of the load beam, a wiring member on the load beam and the base plate, including a gimbal portion, and a magnetic head on the gimbal portion, abutting on a dimple of the load beam via the gimbal portion. The ratio of a distance from a bendable location of the load beam to a center of the dimple with respect to a distance from the center of the dimple to a tip of the tab is 2.8 to 3.8.

According to one embodiment, an actuator assembly includes a first head suspension assembly including a suspension and a piezoelectric element mounted on and bonded to the suspension by a first conductive adhesive applied to a second surface of the suspension, and a second head suspension assembly including a suspension and a piezoelectric element mounted on and bonded to the suspension by a second conductive adhesive applied to a second surface of the suspension. The first and second suspension assemblies are arranged such that the second surfaces of the suspensions oppose each other and the piezoelectric elements oppose each other. A top portion of the first conductive adhesive is offset in a planar direction of the suspension with respect to a top portion of the second conductive adhesive.

A data storage device includes a base, a data storage disk, an actuator arm, a suspension, and a piezoelectric actuator. The data storage disk is attached to the base and has a read / write surface defining an x-y plane. The actuator arm is attached to the base at a first pivot point to rotate parallel to the x-y plane. The suspension is attached to the actuator arm at a second pivot point, the suspension having a first end including a curved edge surface and a second end supporting a read / write head configured to interact with the read / write surface. The piezoelectric actuator is mounted on the actuator arm and includes a biasing finger configured to contact the curved edge surface to cause the suspension to rotate about the second pivot point parallel to the x-y plane. An actuator arm assembly and a method of use are also described.

A data storage device includes a stack of data storage disks, a head stack assembly, and a piezoelectric motor. The head stack assembly includes an arm, a load beam, a head and a tail. The arm is configured for pivotal motion about a longitudinal axis of an actuator shaft. The load beam is attached to the arm. The head is attached to the load beam and is configured to interact with a surface of one of the disks, the surface defining an x-y plane. The tail is disposed on an opposite side of the actuator shaft from the arm and has a first engagement surface that is parallel to the x-y plane. The piezoelectric motor includes a piezoelectric element and a contact tip. The piezoelectric element comprises a first mounting surface. The contact tip is disposed at the first mounting surface and frictionally contacts the engagement surface.

Provided is a disc device capable of suppressing a decrease in stability of positioning of a magnetic head with respect to a disc. A disc device of one embodiment has a piezoelectric element and a flexible member. The piezoelectric element has a first electrode and a second electrode. The flexible member has a first portion and a second portion to which the second electrode is joined. The first portion has a first surface to which the first electrode is joined. The second portion has a second surface to which a magnetic head is joined. The magnetic head has a third surface facing the first surface and the second surface. An end portion of the first surface and the third surface in a first direction faces each other. An end portion of the second surface and the third surface in a second direction faces each other. A distance between the end portion of the first surface and the third surface in the first direction is longer than a distance between the end portion of the second surface and the third surface in the second direction.

The head gimbal assembly includes a gimbal comprising a base portion and a tongue portion joined together by a neck portion; a circuit mounted on the gimbal; a slider mounted on the tongue portion and electrically connected to the circuit; a first PZT actuator having a proximal end mounted on a first coupling portion of the circuit and a distal end mounted on a second coupling portion of the circuit; and a second PZT actuator having a proximal end mounted on a third coupling portion of the circuit and a distal end mounted on a fourth coupling portion of the circuit. The first and third coupling portions do not overlap with the base portion and are not directly supported by the base portion. The second and fourth coupling portions overlap with the tongue portion and are directly supported by the tongue portion.

An apparatus includes a linear actuator assembly with a rail, a carriage, and a piezoelectric actuator. The carriage is coupled to the rail such that the carriage is movable with respect to the rail, and the piezoelectric actuator is configured and arranged to cause the carriage to move linearly between ends of the rail.

A tape drive device includes a head member, a tape drive mechanism moving a tape, a suspension member supporting the head member, piezoelectric units, a drive voltage supply circuit applying a voltage to a piezoelectric element, and a controller. Each of the piezoelectric units includes a piezoelectric element. The controller determines a state of a head unit, based on a piezoelectric output generated at the piezoelectric element provided in the suspension member.

A disk device according to one embodiment includes a magnetic disk, a magnetic head, a piezoelectric element, a flexure, a first bond, and a second bond. The piezoelectric element includes a first piezoelectric body, a first electrode and a second electrode on a first surface of the first piezoelectric body, and a third electrode on a second surface of the piezoelectric body. The third electrode is connected to the second electrode. A first pad and a second pad are disposed on an outer surface of the flexure. A first through hole is open to a part of the first pad. The first electrode and the third electrode overlap with the part. The first bond joins the first pad and the first electrode together and is partly accommodated in the first through hole. The second bond joins the second pad and the second electrode together.