27results about "Electrical connection between arm and support" patented technology

A flexible printed circuit (FPC) for a hard disk drive includes a first preamplifier electrically connected to first read-write transducers and a second preamplifier electrically connected to second read-write transducers, where all transducers are driven via a single primary actuator, with a top FPC section including electrical traces between a fine actuator corresponding to one of the first transducers and a corresponding controller and a bottom FPC section including traces between a fine actuator corresponding to one of the second transducers and a corresponding controller. To inhibit potential crosstalk between the fine actuator traces and read traces and / or voice coil motor (VCM) traces, the fine actuator traces may be positioned not-adjacent to read traces, such as between write traces adjacent the read traces and serial input / output (SIO) traces adjacent VCM traces, and / or at least five trace-widths away from the VCM traces.

The embodiment of the invention relates to a suspension assembly and a disk device. A suspension assembly according to one embodiment is provided with a wiring member. The tail connection portion of the wiring member has a base layer, a cover layer, and a conductive layer disposed between the base layer and the cover layer. The cover layer is provided with a groove. The conductive layer has a first wiring, a second wiring, and a connection terminal extending across the groove between the first wiring and the second wiring. The base layer has a first base portion covering the first wiring, a second base portion covering the second wiring, and a pair of first protruding portions protruding from the first base portion and partially covering the connection terminals. And a pair of second protruding portions that protrude from the second base portion, partially cover the connection terminals, and are separated from the pair of first protruding portions.

To provide a suspension for disk device capable of achieving excellent flexure rigidity while suppressing vibration of a flexure effectively.SOLUTION: A suspension 10 for a disk device includes a load beam 21, a flexure 22 that is superimposed on the load beam and has a tongue 45 on which a slider 11 is mounted and an outrigger 51 connected to the tongue 45, and a first damper material 80 pasted on the load beam 21 and the outrigger 51. The first damper material 80 has a single layer of viscoelastic body.SELECTED DRAWING: Figure 4

A flexible printed circuit (FPC) for a hard disk drive includes a first preamplifier electrically connected to first read-write transducers and a second preamplifier electrically connected to second read-write transducers, where all transducers are driven via a single primary actuator, with a top FPC section including electrical traces between a fine actuator corresponding to one of the first transducers and a corresponding controller and a bottom FPC section including traces between a fine actuator corresponding to one of the second transducers and a corresponding controller. To inhibit potential crosstalk between the fine actuator traces and read traces and / or voice coil motor (VCM) traces, the fine actuator traces may be positioned not-adjacent to read traces, such as between write traces adjacent the read traces and serial input / output (SIO) traces adjacent VCM traces, and / or at least five trace-widths away from the VCM traces.

According to one embodiment, a suspension assembly includes a wiring member. The tail connector of the wiring member includes a base layer, a cover layer, and a conductive layer interposed between the base layer and the cover layer. The cover layer includes a groove. The conductive layer includes a first wire, a second wire, and a connection terminal extending between the first wire and the second wire across the groove. The base layer includes a first base covering the first wire, a second base covering the second wire first protrusion pair protruding from the first base to partially cover the connection terminal, and second protrusion pair protruding from the second base to partially cover the connection terminal.

An embodiment of the present invention provides a disk device capable of suppressing peeling of a flexible printed circuit board. A disk device of one embodiment has a magnetic disk, a magnetic head, a first flexible printed circuit board, and a second flexible printed circuit board. The first flexible printed circuit board has a plurality of first terminals. The second flexible printed circuit board has a surface, a plurality of second terminals provided on the surface and joined to the plurality of first terminals by a joining body, and a first planar ground layer covering at least one of the plurality of second terminals in a direction orthogonal to the surface. The plurality of second terminals include a first read terminal. The first planar ground layer is separated from at least a portion of the first read terminal in a direction along the surface.

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 method of manufacturing a piezoelectric microactuator having a wrap-around electrode includes forming a piezoelectric element having a large central electrode on a top face, and having a wrap-around electrode that includes the bottom face, two opposing ends of the device, and two opposing end portions of the top face. The device is then cut through the middle, separating the device into two separate piezoelectric microactuators each having a wrap-around electrode.

To provide a base plate of a suspension for a disk device, a suspension for a disk device, and a disk device capable of thinning an arm.SOLUTION: A base plate 20 is a base plate of a suspension 10 for a disk device connected to an arm provided in the disk device and includes a plate body 21 and a connection portion 40 provided on a plate body. The connection portion includes a through hole 41 passing through the plate body in a thickness direction of a plate body, a plurality of protrusions that are provided along an edge of the through hole in a circumferential direction around a central axis of the through hole and are inserted into a mounting hole of the arm, and an inner peripheral surface formed by the plurality of protrusions and the through hole, and the inner peripheral surface has a plurality of recesses 44 formed between the plurality of protrusions.SELECTED DRAWING: Figure 3

According to one embodiment, a suspension assembly includes a support plate, a wiring member provided on the support plate and including an elastically deformable gimbal portion including a tongue portion on which a magnetic head is mounted and an outrigger connected to the tongue portion, and a viscoelastic material filled into a gap between the outrigger and the support plate and forming a damper.

Provided are a suspension assembly capable of maintaining the strength of connection terminals and seeking to narrow the pitch of wiring and improve the jointability of the connection terminals, and a disc device provided with the same. According to an embodiment, the suspension assembly is provided with a support plate, a head supported by the support plate, and a wiring member provided to the support plate. The wiring member has a front end portion electrically connected to the head, a connection end portion extending out to the outside of the support plate, and a plurality of wirings extending between the front end portion and the connection end portion. The connection end portion is provided with a cover layer provided with an opening, 13 or more connection terminals arranged in alignment with the opening leaving a space in the length direction of the opening and connected to the wirings, respectively, and a base layer provided in overlapping relation to the cover layer and the connection terminals and having a plurality of first openings facing a portion of the connection terminals, respectively, and a plurality of second openings facing the space between adjacent connection terminals, respectively.

To provide a flexure of a suspension for a disk drive and a suspension for the disk drive that can be thinner.SOLUTION: A flexure of a disk drive suspension includes: a metal base 40; and a wiring portion 50 provided along the metal base. The wiring portion has: a base insulating layer 61; a conductive layer 71 overlapping with the base insulating layer; and a cover insulating layer 81 overlapping with the conductive layer. The metal base has a pair of first portions 41A and 41B having side surfaces facing each other. At least one of the base insulating layer and the cover insulating layer is in contact with the side surface between the pair of first portions. The conductive layer does not overlap with the metal base in a stacking direction of the wiring portion.SELECTED DRAWING: Figure 6

A suspension base plate of a disk device of an embodiment is a suspension base plate of a disk device connected to an arm provided on the disk device, and includes a plate body and a connecting portion provided on the plate body. The connecting portion includes a through-hole that penetrates the plate body in a thickness direction of the plate body, and a plurality of protrusions provided along an edge of the through-hole in a circumferential direction centered on a central axis of the through-hole. The plurality of protrusions and the through-hole form an inner peripheral surface, and the inner peripheral surface includes a plurality of protrusions formed between the plurality of protrusions and the recesses.

To provide a disk device capable of suppressing defects in bounding two flexible printed circuit boards.SOLUTION: A disk device according to one embodiment includes a first flexible printed circuit board and a second flexible circuit board. The first flexible printed circuit board has: a first insulating layer; a second insulating layer; a first conductive layer arranged between the first insulating layer and the second insulating layer; and a first terminal provided on the first conductive layer. The second flexible printed circuit board has: a first surface facing the second insulating layer; a second surface located on the opposite side of the first surface; and a second terminal provided on the first surface and bonded to the first terminal by a bonded body. A magnetic head is mounted. The second surface has a dark color portion that is less bright than a portion where the second insulating layer covers the first conductive layer, out of the first flexible printed board.SELECTED DRAWING: Figure 3

To provide a suspension assembly that improves connection reliability of connection terminals.SOLUTION: In a hard disk drive, a head gimbal assembly, which is a suspension assembly, includes a wiring member 56. A tail connection portion 66 of the wiring member has a base layer 91, a cover layer 92, and a conductive layer 93 arranged between the base layer and the cover layer. A cover groove 105 is provided on the cover layer. The conductive layer 93 has first wiring 111, second wiring 112, and a connection terminal 67 extending between the first wiring and the second wiring across the cover groove. A base has a first base 121 covering the first wiring 1, a second base 122 covering the second wiring 112, a pair of first protrusions 127 protruding from the first base 121 and partially covering the connection terminal 67, and a pair of second protrusions 128 protruding from the second base 122, partially covering the connection terminal 67, and spaced apart from the pair of first protrusions 127.SELECTED DRAWING: Figure 5

According to one embodiment, a suspension assembly includes a support plate, a head supported by the support plate, and a wiring member provided on the support plate, and constituted by a stacked layer body. The wiring member includes a distal portion electrically connected to the head, a connection end portion extending to an outside of the support plate, and a plurality of wirings. The connection end portion includes an opening extending in a first direction, a plurality of connection terminals each formed by a conductive layer and arranged in the first direction in the opening, and a partition provided at the connection terminal to protrude from the side of the second insulating layer.

To provide a terminal connection portion capable of securely connecting a first terminal and a second terminal by a conductive member for connection such as an ACF.SOLUTION: A first terminal 31 provided on a tail pad portion 20 has a base portion 32, a curved portion 33, and an overlapping portion 34. The base portion 32 has a first surface 32a fixed to a base insulating layer 23, and a second surface 32b on the opposite side of the first surface 32a. The curved portion 33 has a shape reversal in a thickness direction of the base portion 32 from an end 32c of the base portion 32 toward the second surface 32b. The overlapping portion 34 extends from the bent portion 33 in a direction along the second surface 32b. An ACF (anisotropic conductive film) 41 is arranged between the overlapping portion 34 and the second terminal 42. The overlapping portion 34 and the second terminal 42 are connected to each other via the ACF 41.SELECTED DRAWING: Figure 6

The present invention is entitled "Flexible Printed Circuit Offset Finger Reinforcement". A hard disk drive flexible printed circuit (FPC) is disclosed that includes a plurality of fingers extending from a main portion, wherein each finger has a thermally conductive reinforcement, at least one wiring layer on the reinforcement, and a cover film over the at least one wiring layer, wherein a centroid of the reinforcement is offset from a centerline of the cover film. Thus, using the heat dissipation properties of the reinforcement, the temperature difference between the upper and lower electrical pads of the FPC resulting from a thermal-based interconnection process can be reduced, and the temperature on the FPC fingers becomes more uniform, damage to the FPC is prevented, and solder yield is improved.

A flexible printed circuit (FPC) for a hard disk drive includes a first preamplifier electrically connected to first read-write transducers and a second preamplifier electrically connected to second read-write transducers, where all transducers are driven via a single primary actuator, with a top FPC section including electrical traces between a fine actuator corresponding to one of the first transducers and a corresponding controller and a bottom FPC section including traces between a fine actuator corresponding to one of the second transducers and a corresponding controller. To inhibit potential crosstalk between the fine actuator traces and read traces and / or voice coil motor (VCM) traces, the fine actuator traces may be positioned not-adjacent to read traces, such as between write traces adjacent the read traces and serial input / output (SIO) traces adjacent VCM traces, and / or at least five trace-widths away from the VCM traces.

This invention is entitled "Flexible Printed Circuit Copper Clad for Temperature Management". A hard disk drive flexible printed circuit (FPC) is disclosed that includes a plurality of fingers extending from a main portion, wherein each finger has a first wiring layer including a first conductive trace layout, a second wiring layer including a second conductive trace layout, and a base film interposed between the first and second wiring layers, wherein the first conductive trace layout includes at least one thermally conductive protective island covering a corresponding portion of the second trace layout to provide a protective thermal barrier to the base film. As a result, the maximum temperature on the various layers of the FPC laminate article can be reduced, damage to the FPC is prevented, and manufacturing yield is improved.

According to one embodiment, a suspension assembly includes a wiring member. The tail connector of the wiring member includes a base layer, a cover layer, and a conductive layer interposed between the base layer and the cover layer. The cover layer includes a groove. The conductive layer includes a first wire, a second wire, and a connection terminal extending between the first wire and the second wire across the groove. The base layer includes a first base covering the first wire, a second base covering the second wire first protrusion pair protruding from the first base to partially cover the connection terminal, and second protrusion pair protruding from the second base to partially cover the connection terminal.

A flexible member of a suspension for a magnetic disk device according to one embodiment includes a metal base and a wiring portion provided along the metal base. The wiring portion has a base insulating layer, a conductor layer laminated on the base insulating layer, and an insulating cover layer laminated on the conductor layer. The metal base has a pair of first portions having side surfaces opposite to each other. At least one of the base insulating layer and the cover insulating layer is in contact with the side surfaces between the pair of first portions, and the conductor layer does not overlap the metal base in a lamination direction of the wiring portion.

A head gimbal assembly (HGA) for a hard disk drive includes a carriage arm having a swaging hole, first and second suspensions, and respective first and second swage plates to which the first and second suspensions are respectively coupled. Each swage plate includes a respective series of intermittent swage boss structures extending from a baseplate, where the swage boss structures of each swage plate are relatively positioned, extending from a respective side of the arm into the swaging hole, such each of the one series of swage boss structures interposes with the other series of swage boss structures. With both series of interposed swage boss structures occupying the same swaging hole height, the height of each swage boss can be effectively doubled and a higher retention torque of the swage coupling is enabled even in view of a thinner arm tip and shorter corresponding swaging hole.