Nhk Spring Co., Ltd.

Toshiba Storage Device Corporation

Tatsuhiko Nishida

Masao Hanya

Hiroshi Nakayama

Toshiki Ando

Isamu Kuchiwaki

Akira Nojima

Takeo Hayashi

Mikio Arai

Osamu Iriuchijima

Chihiro Kono

Jun Soga

Norio Horie

Hiroshi Komiya

Gaku Nashimoto

Ryoichi Tazawa

Ryo Kuwata

Shoku Tei

A head driving device includes a base member, a head supporting member, a beam member, a piezoelectric unit, and a reinforcement member. The reinforcement member includes a first portion and a second portion. The first portion is arranged between a first end portion in a length direction of a head member and the base member. The second member is arranged between a second end portion in a length direction of the head member and the base member. The reinforcement member allows the head supporting member to move in a direction along a surface of tape and controls the head supporting member from moving in a thickness direction of the head member.

Head driving device configured to move a head member relative to tape as a recording medium and configured to stably hold the head member

A flexure includes a body portion including a first metal base, a terminal portion electrically connected to an actuator, and a connection portion connecting the body portion with the terminal portion and not including the first metal base. The wiring portion includes a base insulating layer, a conductor layer provided on the base insulating layer, and a cover insulating layer covering the conductor layer. The cover insulating layer includes a first cover portion provided on the connection portion, and the base insulating layer includes a first base portion provided on the connection portion and having a thickness smaller than a thickness of the first cover portion.

Flexure and disk drive suspension

A suspension includes a first actuator arrangement portion and a second actuator arrangement portion. The first actuator arrangement portion includes a load beam frame portion formed of a part of the load beam. Both ends of a first actuator element are supported by the load beam frame portion. The second actuator arrangement portion includes a second load beam frame portion formed of a part of the load beam and a thin plate frame portion formed of a metal base of a flexure. One end of the second actuator element is supported by the second load beam frame portion. The other end of the second actuator element is supported by the thin plate frame portion.

Disk drive suspension

According to an embodiment, a disk drive suspension includes a load beam, a flexure including a tongue on which a slider is mounted and an outrigger connected to the tongue, and overlapping the load beam, and a damper material attached to the load beam and the outrigger. Further, the damper material has a single-layer structure of a viscoelastic material.

Disk drive suspension including a damper material attached to a load beam and to an outrigger of a flexure

A suspension includes a load beam, a flexure and a dimple portion. The flexure includes a tongue. The dimple portion swingably supports the tongue at least over a first position and a second position. In the tongue, first pillow portions supporting a slider and an adhesive portion fixing the slider are provided. In the load beam, a second pillow portion protruding towards the slider is provided. The second pillow portion is in contact with the slider when the tongue is located at the first position, and separates from the slider when the tongue has moved to the second position.

A suspension includes a load beam with first and second openings, a flexure including first and second outriggers, and first and second damper members. The first damper member is attached to the load beam and part of the first outrigger that overlaps the first opening of the load beam. The second damper member is attached to the load beam and part of the second outrigger that overlaps the second opening of the load beam. The first opening includes a region which is not covered by the first damper member, and the second opening includes a region which is not covered by the second damper member.

Suspension for disk device

A suspension includes a load beam, a flexure including first and second outriggers, and first and second damper members. The first outrigger is formed to oppose the first surface and across the first opening. The second outrigger is formed to oppose the first surface and across the second opening. The first damper member is attached to the first outrigger at the first opening and the first surface. The second damper member is attached to the second outrigger at the second opening and the first surface. An edge portion of the first opening and the first damper member are spaced apart and an edge portion of the second opening and the second damper member are spaced apart.

A flexure is provided along a first surface of a load beam. The flexure includes a tongue on which a slider is mounted, a first outrigger arm, and a second outrigger arm. A first damping member is provided in a first outrigger root portion. The first damping member adheres to both the load beam and the first outrigger root portion in a first aperture portion including a first aperture formed in the load beam. A second damping member is provided in a second outrigger root portion. The second damping member adheres to both the load beam and the second outrigger root portion in a second aperture portion including a second aperture.

An actuator mounting section includes a plate member including a first plate and a second plate. The first plate is formed with an opening which accommodates an actuator element. The second plate includes a main body portion which overlaps the first plate and supporting portions which support opposite ends of the actuator element. A narrow portion narrower than the first plate is formed at a part of the main body portion of the second plate. A weld seal portion is formed by laser-welding the first plate and the second plate at the narrow portion. Adhesive is provided between the opposite ends of the actuator element and an inner surface of the opening of the first plate.

Disk drive suspension and manufacturing method therefor

An actuator mounting section comprises a plate member includes a first plate and a second plate. The first plate is formed with an opening which accommodates an actuator element. The second plate comprises a main body portion which overlaps the first plate and supporting portions which support opposite ends of the actuator element. A narrow portion narrower than the first plate is formed at a part of the main body portion of the second plate. A weld seal portion is formed by laser-welding the first plate and the second plate at the narrow portion. Adhesive is provided between the opposite ends of the actuator element and an inner surface of the opening of the first plate.

The signal source generates a signal of a frequency higher than the vibration frequency of the slider of the hard disk drive, and supplies it to one end of the slider and the disk of the hard disk drive. The detector detects a signal output from the other end of the slider and the disk, and outputs a change in the capacitance between the slider and the disk as a voltage when the hard disk drive receives an impact.

Device and method for measuring vibration characteristics of hard disk suspension

A disc drive apparatus has a base, a disc, and a carriage. The base has a first vibration mode and a second vibration mode as reference vibration modes with respect to frequency response characteristics observed when the disc drive apparatus is shaken. The second vibration mode has a low-frequency second vibration mode (Base 2nd-1), in which a waveform peak is created on the low-frequency side, and a high-frequency second vibration mode (Base 2nd-2), in which a waveform peak is created on the high-frequency side. The two second vibration modes (Base 2nd-1 and Base 2nd-2) have a relationship such that the phase of a pivot position is inverted between them. A frequency of a first bending mode of an arm of the carriage is set in a frequency domain in a trough between the two second vibration modes.

Disc drive apparatus

A carriage for a disc device, which has a top arm, bottom arm, and mid arm, has a main mode, end arm mode, and mid arm mode as a frequency response obtained when subjected to a vertical shake. In the main mode, all of the top, bottom, and mid arms swing at a first frequency within the same phase in a primary bending mode. In an end arm mode, the top and bottom arms swing at a second frequency higher than the first frequency within opposite phases and with an amplitude larger than that of the mid arm. In the mid arm mode, the mid arm swings at a third frequency having a difference of 50 Hz or less from the second frequency within the same phase as in the main mode, and the top and bottom arms swing within the phase opposite from that in the main mode.

Carriage for disk device

A head suspension restricts deformation of a flexure caused by frictional force produced between a hard disk and a slider when the hard disk turns in a reverse direction. The head suspension has a load beam resiliently supported with a base. The base is supported with an arm that is turned around an axis. The load beam applies load onto a head having a slider to write and read data to and from the hard disk. The flexure is attached to the load beam and has a tongue that supports the slider. The flexure is provided with a limiter that limits displacement of the tongue due to frictional force produced between the hard disk and the slider when the hard disk is reversely turned. The limiter is on the base side and faces a free end of the tongue. The limiter is integrally formed from a part of the flexure, to face the free end of the tongue.

Head suspension and method of processing head suspension

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.

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Yokohama, Japan

Tatsuhiko Nishida