Matsushita Electric Industrial Co., Ltd.

Tdk Corporation

Panasonic Corporation

Sae Magnetics (h.k.) Limited

Hideki Kuwajima

Kaoru Matsuoka

Makoto Miyamoto

Hideyuki Hashi

Kenichi Sakamoto

Yoshihiro Ueno

Shigeo Obata

Takashi Honda

Yasuchika Kudo

Taku Someya

Takeshi Wada

Katsuki Kurihara

Hirokazu Uchiyama

Zhisheng Deng

Hiromi Kita

Mitsuhisa Yoshimura

Kenichi Miyamori

Toshio Inaji

Koichi Shinohara

Tatsuhiko Inagaki

Hiromitsu Noda

Hiroshi Koso

Kaoru Matsushita

Kai Wu

Satoru Fujii

Shinichi Yamamoto

Kazuo Yokoyama

Yousuke N Irie

Hiroshi Kohso

Isaku Kanno

Yuko Ogawa

Makoto Umeda

Hiroyuki Kita

Hirotaka Okamoto

Hirosuke Mikami

A head support mechanism is provided with: a slider with a head element; a slider support plate; a load beam that holds the slider support plate; a fulcrum protrusion that is provided around a front end part of the load beam which supports the slider support plate; drive means that is configured to pivotally move the slider support plate centering on the fulcrum protrusion; and a drive means support portion that is provided to overlap and support the drive means. The drive means support portion has a narrow part and at least one wide part provided on a front end part side and a rear end part side of the load beam with respect to the narrow part. The drive means support portion is disposed at a position overlapping the fulcrum protrusion in a projection plane in a direction perpendicular to a main surface of the slider.

Head support mechanism for a magnetic disk drive with a slider that has a head element

A dynamic vibration absorber includes an arm section that includes an elastic unit; and a weight section that is connected to the arm section and includes a mass unit. The arm section and the weight section each include a plurality of stacked single-layer materials having different degrees of elasticity and specific gravities, and at least one of the single-layer materials of the arm section and at least one of the single-layer materials of the weight section are shared in common.

Dynamic vibration absorber, flexure, and head support mechanism

To control the resonance generated in the head assembly and improve property on the head location controlling. A head assembly includes: a slider having a head element; a slider supporting plate for holding the slider; a load beam for holding the slider supporting plate; a support projection which is arranged on the front end part of the load beam and on which the slider supporting plate is supported rotatably; a drive unit that rotates the slider supporting plate around the support projection; a dynamic vibration absorber arranged on the slider supporting plate, wherein the dynamic vibration absorber is disposed closer to the rear end side of the load beam than the support projection and has vibration freedom in the rotating direction of the slide supporting plate.

Head assembly and magnetic disk device

Head assembly and magnetic disk device, wherein reaction force induced by warpage of driving element during operation can be decreased and unnecessary resonance can be suppressed, in addition, displacement amount of head element can be efficiently obtained. A head assembly includes first buffering part connecting first reinforcing part and first displacement transferring part with flexural rigidity lower than those of first reinforcing part and first displacement transferring part; second buffering part connecting second reinforcing part and main part of flexure with flexural rigidity lower than those of second reinforcing part and main part of flexure; third buffering part connecting third reinforcing part and second displacement transferring part with flexural rigidity lower than those of third reinforcing part and second displacement transferring part; and fourth buffering part connecting fourth reinforcing part and main part of flexure with flexural rigidity lower than those of fourth reinforcing part and main part of flexure.

A head assembly includes: a first link that is disposed to interconnect between a first joint connected to a slider support plate and a second joint connected to a first fixing unit; a second link that is disposed to interconnect between a third joint connected to the slider support plate and a fourth joint connected to a second fixing unit; a first drive unit that drives the first link; and a second drive unit that drives the second link.

Head assembly

A head support mechanism includes a slider on which a head element is mounted is arranged at a tip end part of a load beam. The head support mechanism includes a support projection arranged at the tip end part of the load beam, a gimbal part including the slider and arranged to support the slider in a revolvable manner around the support projection, a displacement member arranged to revolve the slider around the support projection, and a counter balance aligned along a symmetric axis of the gimbal part so as to align a centroid of the gimbal part including the slider with the support projection.

Head support mechanism with counter balance and centroid adjustment pads

A head assembly includes a slider having a head element, a load beam, a fulcrum formed at a top end section of the load beam, a slider support plate for supporting the slider to freely turn around the fulcrum, at least one drive element for applying a turning force to the slider support plate in a plane thereof, a first linear link part having at both ends a first top end joint part mechanically connected to the slider support plate, and a first base end joint part mechanically connected to the load beam, and a second linear link part having at both ends a second top end joint part mechanically connected to the slider support plate, and a second base end joint part mechanically connected to the load beam. Both of an extended line of the first linear link part and an extended line of the second linear link part travel toward a position of the fulcrum and intersect with each other.

Head assembly, magnetic disk drive apparatus and rotation mechanism

A disk drive includes a magnetic recording medium rotatably supported, a spindle motor for spinning the recording medium, a slider having a head, a supporting arm having the slider at a first end facing the recording medium, a bearing for holding the supporting arm rotatably along a recording surface of the medium and pivotably in a vertical direction with respect to the recording surface, a leaf spring giving thrusting force to a first end of the supporting arm toward the medium, and a driver for rotating the supporting arm along the recording surface. When the driver rotates the supporting arm along the recording surface and parks the head in a given evacuation area on the recording surface, a second end of the supporting arm is depressed.

Disk device employing a CSS system head supporting unit

An opening and closing device to be used in a variety of electronic apparatuses is disclosed, and the opening and closing device can be manufactured at a low cost and ensures a positive opening/closing action. After the reversing cam moves along an axial line, a movable cam protruding on an inner wall of a ring-like movable unit elastically urges against a reversing cam. While the movable cam is held at a given angle, the movable cam elastically urges against the reversing cam and rotates, so that a stationary unit needs no stationary cam during this given angle being kept. The stationary unit thus needs the stationary cam on its outer wall only in part but not entirely. As a result, the stationary unit can be manufactured with ease by forming process.

Opening and closing device

An opening-closing device includes a fixed gear of a fixed body, a conversion gear engaged with the fixed gear, a movable gear of a movable body, and a relay gear engaged with the conversion gear and with the movable gear, all of which are attached to a locking plate. The movable body can be held at a predetermined angle with respect to the fixed body by making an engaging portion in the locking plate is contacted with a locking portion in the fixed body and by making the conversion gear move to another position when the movable body is opened at the predetermined angle with respect to the fixed body. Moving the conversion gear to another position makes it possible to perform opening and closing operations in a greater angle. Thus, the opening-closing device can have a simple structure and perform a variety of opening and closing operations.

Opening-closing device

An opening and closing device which includes a roughly cylindrical stator, a concavo-convex stator cam provided at an end of the stator, a ring-like rotor rotatably disposed relative to the stator, a rotor cam opposedly protruding from an inner periphery or outer periphery of the rotor, and a spring pushing the rotor against the stator. The rotor cam slides on the concavo-convex stator cam during the opening and closing operations. In this structure, the opening and closing device is openable roughly up to 180&#xb0;, and a force in the opening direction is applied to a movable housing even when the movable housing is opened not less than 165&#xb0;. Accordingly, this opening and closing device eliminates wobbling in the opening and closing direction, and ensures reliable opening and closing operations and retention at a predetermined angle.

An opening and closing device in which a movable gear is movably disposed on a fixed plate, and a fixed gear engaged with the movable gear is secured to a right end of a spring member applying a force to a movable plate in a moving direction. This right end of the spring member is installed in an L-shaped guide hole and a left end of the spring member is attached to the movable plate. With this structure, the opening and closing device offers combined operations in an up-and-down direction and a right-and-left direction orthogonal to the up-and-down direction.

A head support device that is resistant to shock due to external impact, a disk device including the head support device, and a portable electronic device including the disk device are disclosed. In the head support device, a head support arm on which a head slider with a head is disposed through a flexible and elastic gimbal mechanism is formed rotatably about a rotary shaft as a horizontal rotating axis in parallel with a disk surface. The head support arm is formed such that it pivots, about a straight line drawn between apexes of a pair of pivots as a vertical pivot axis, vertically (generally perpendicularly) with respect to the disk surface. A gravity center position of a total mass of members, other than the head slider, pivoting about the vertical pivot axis is positioned near the vertical pivot axis.

Head support device, disk device having the head support device, and portable electronic device having the disk device

An opening and closing mechanism includes a fixed member; a movable member disposed on the top face of this fixed member to be movable and rotatable in predetermined directions; a spring applying a spring force in the moving and rotating directions of this movable member; and a guide for restricting movement and rotation of the movable member.

Growing community of inventors

Kyoto, Japan

Hideki Kuwajima