Abstract: A rotor includes a rotor core having a hole, and a magnet inside the hole. A stator includes a stator core having an annular core back surrounding the rotor core and teeth extending inward from the core back and arranged at intervals in a circumferential direction, and coils attached to the stator core. The hole has an arc shape protruding inward. The magnet is in the hole and has an arc shape extending along the hole. The rotor core has cavity portions sandwiching the magnet. A curved outer surface of the hole is in close contact with a curved outer surface of the magnet at a portion closer to a center in the circumferential direction than an end portion in the circumferential direction. At least a part of the cavity portion extends to the outer side in the circumferential direction with respect to the center of a pole.

Abstract: A flexure of a disk drive suspension includes a metal base, and a wiring portion provided along the metal base. The wiring portion includes a base insulating layer, a conductor layer overlapping with the base insulating layer, and a cover insulating layer overlapping with the conductor layer, and the metal base includes a pair of first portions having side surfaces opposed to each other and a second portion overlapping with the conductor layer and connected to the pair of first portions. 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 a thickness of the second portion is smaller than a thickness of the first portions.

Abstract: A flexure of a disk drive suspension includes a metal base, and a wiring portion provided along the metal base. The wiring portion includes a base insulating layer, a conductor layer overlapping with the base insulating layer, and a cover insulating layer overlapping with the conductor layer, and the metal base includes a pair of first portions having side surfaces opposed 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 with the metal base in a direction of stacking the wiring portion.

Abstract: 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.

Abstract: A first terminal provided on a tail pad portion includes a base portion, a bent portion and an overlapping portion. The base portion includes a first surface fixed to a base insulating layer and a second surface on an opposite side to the first sur face. The bent portion is reversed in a thickness direction of the base portion from an end of the base portion towards the second surface. The overlapping portion extends from the bent portion in a direction along the second surface. An ansotropic conductive film (ACE) is disposed between the overlapping portion and the second terminal. The overlapping portion and the second terminal are connected to each other via the ACE.

Abstract: A flexure includes a metal base, a base insulation layer formed on the metal base, a terminal formed on the base insulation layer, a conductor portion electrically conductive to the terminal and an detouring extending portion formed on the conductor portion. The conductor portion includes a conductor and a cover layer covering the conductor. A conductive adhesive is supplied to the terminal. The detouring extending portion is formed in a longitudinal middle of the conductor portion and extends from the side surface of the conductor portion in a direction intersecting the length direction of the conductor portion along the base insulation layer.

Abstract: A flexure of a disk drive suspension includes a metal base, and a wiring portion provided along the metal base. The wiring portion includes a base insulating layer, a conductor layer overlapping with the base insulating layer, and a cover insulating layer overlapping with the conductor layer, and the metal base includes a pair of first portions having side surfaces opposed to each other.

Abstract: A rotor includes a rotor core including a first slit, a second slit radially inward of the first slit, and a third slit radially inward of the second slit, a first magnet in the first slit, a second magnet in the second slit, and a third magnet in the third slit. A first angle defined by a line segment connecting a reference point and the end portion of the first slit and a line segment connecting the reference point and the end portion of the first magnet is larger than a second angle defined by a line segment connecting the reference point and the end portion of the second slit and a line segment connecting the reference point and the end portion of the second magnet.

Abstract: A flexure includes a metal base, a base insulation layer formed on the metal base, a terminal formed on the base insulation layer, a conductor portion electrically conductive to the terminal and an detouring extending portion formed on the conductor portion. The conductor portion includes a conductor and a cover layer covering the conductor. A conductive adhesive is supplied to the terminal. The detouring extending portion is formed in a longitudinal middle of the conductor portion and extends from the side surface of the conductor portion in a direction intersecting the length direction of the conductor portion along the base insulation layer.

Abstract: Provided is a stator including: a stator core having a plurality of teeth; and a distributed winding coil. The plurality of teeth include a first tooth having an umbrella and a second tooth having no umbrella. The first and second teeth are alternately disposed in a circumferential direction of the stator core. A slot between the first and second teeth adjacent to each other has a radial opening that opens radially. The radial opening has a circumferential width larger than a wire diameter of the coil and smaller than twice the wire diameter of the coil.

Abstract: A suspension for a disk device comprises a load beam, a flexure and a damper member. The flexure overlaps the load beam, and comprises a tongue on which a slider is mounted and an outrigger connected to the tongue. The damper member is attached to the load beam. The outrigger comprises an arm opposing the load beam, and a folded portion extending from the arm and folded back in a thickness direction of the arm. Further, the folded portion is attached to the damper member.

Abstract: A suspension for a disk device comprises a load beam, a flexure and a damper member. The flexure overlaps the load beam, and comprises a tongue on which a slider is mounted and an outrigger connected to the tongue. The damper member is attached to the load beam. The outrigger comprises an arm opposing the load beam, and a folded portion extending from the arm and folded back in a thickness direction of the arm. Further, the folded portion is attached to the damper member.

Abstract: The flexure tail includes a tail body, a first bent portion extending in a width direction of the tail body, a second bent portion extending in a length direction of a flexure, a tail pad portion, a conductor bent portion where a direction of a conductor changes, an extension portion, and a test conducting portion. The test conducting portion includes a conductor connecting portion conductive to a conductor, a jumper conductor, and a test pad arranged in the extension portion. The jumper conductor has a first end portion connected to the conductor connecting portion, and a second end portion connected to the test pad.

Abstract: The flexure tail includes a tail body, a first bent portion extending in a width direction of the tail body, a second bent portion extending in a length direction of a flexure, a tail pad portion, a conductor bent portion where a direction of a conductor changes, an extension portion, and a test conducting portion. The test conducting portion includes a conductor connecting portion conductive to a conductor, a jumper conductor, and a test pad arranged in the extension portion. The jumper conductor has a first end portion connected to the conductor connecting portion, and a second end portion connected to the test pad.

Abstract: A suspension for a disk device includes a load beam, a flexure and first and second damper members. The load beam includes a first surface, a second surface and first and second openings. The flexure includes first and second outriggers. The first outrigger includes a first branch portion through the first opening, a distal end thereof being interposed between the second surface and the first damper member. The second outrigger includes a second branch portion through the second opening, a distal end thereof being interposed between the second surface and the second damper member.

Abstract: A suspension for a disk device includes a load beam, a flexure and first and second damper members. The load beam includes a first surface, a second surface and first and second openings. The flexure includes first and second outriggers. The first outrigger includes a first branch portion through the first opening, a distal end thereof being interposed between the second surface and the first damper member. The second outrigger includes a second branch portion through the second opening, a distal end thereof being interposed between the second surface and the second damper member.

Abstract: A flexure includes a metal base, a circuit member, and an actuator. The circuit member includes a base insulating layer, a conductor layer, and a cover insulating layer. The conductor layer includes a second pad, and a reference hole, which is an example of a portion to be protected, in a tongue portion. A second end portion of the actuator is fixed to the second pad via an adhesive. The circuit member includes a wall portion. The wall portion is formed between the second pad and the reference hole. A height of the wall portion is greater than a height of the second pad.

Abstract: A flexure of a hard disk drive includes a metal base, and a conductive member formed on the metal base. The conductive member includes an insulating layer and a conductive layer. The insulating layer has a flat portion and an elevated portion projected from the flat portion. The conductive layer has a connecting terminal formed along the side surface.

Abstract: A circuit member includes a metal base, an insulating layer, a conductor, and a cover layer. A terminal portion includes a thick portion formed on a side part of the insulating layer, and an extension portion, which is a part of the conductor, overlapping the thick portion. The extension portion includes a side pad portion along a side surface of the thick portion. A side surface of the side pad portion constitutes a side pad extending in a thickness direction of the conductor. A length of the side pad in a thickness direction is greater than a thickness of the conductor. A side pad insulating portion, which is formed of a part of the thick portion, is formed between a distal end of the metal base and the side pad portion.

Abstract: A circuit member includes a metal base, an insulating layer, a conductor, and a cover layer. A termial portion of the circuit member includes a thick portion formed at a part of the insulating layer, a conductor convex portion which is a part of the conductor, and overlaps the thick portion, and a conductor extending portion. By the conductor convex portion and the conductor extending portion, a stepped side pad is formed. The stepped side gad includes a first surface along the conductor extending portion, and a second surface which rises in a thickness direction of the conductor extending portion. The stepped side pad and an element are connected by a conductive member.