Hitachi Global Storage Technologies Netherlands B.v.

Hgst Netherlands, B.v.

International Business Machines Corporation

Western Digital Technologies, Inc.

Hitachi Global Storage Technologies Nethlerlnads B.v.

Takaaki Deguchi

Mutsuro Ohta

Shingo Tsuda

Hiroshi Matsuda

Kenji Suzuki

Kohichi Suzuki

Shinichi Kimura

Takashi Kouno

Hitoshi Shindo

Shinsuke Nakagawa

Eiji Soga

Kanako Abe

Toshiyuki Katoh

Katsumi Kiguchi

Nobuo Sasaoka

Toshihiko Shimizu

Fu-Ying Huang

Hideki Mori

Jr-Yi Shen

Andre Sirilutporn Chan

Ta-Chang Fu

Hiromitsu Masuda

Taichi Nakamura

Satoshi Matsumura

Kunihiro Shida

Takeshi Chawanya

Yoshihiro Hirasaka

Akira Morita

Naoshi Mizumoto

May Ching Kung

Katsuhiko Ohta

Hirofumi Nozaki

Masaki Ootsuka

Myeong Eop Kim

A unitary enclosure base for a data storage device integrally includes a first surface beneath a bottom disk, a bypass channel formed with an entry area with a lower surface below the first surface, a second surface lower than the first surface and beneath an actuator arm that services the bottom surface of the bottom disk, and a flow diverter extending upward from the first surface and positioned upstream of the actuator arm. The diverter may be positioned relative to the bypass channel such that disk-generated gas flow is diverted into the bypass channel away from the actuator arm. The base may further include a spoiler extending upward from the first surface and positioned downstream of the actuator arm. The spoiler may be positioned to inhibit a wake effect upon the actuator arm.

Data storage device baseplate diverter and downstream spoiler

A magnetic head drive device including a suspension for supporting a magnetic head, and a main actuator that produces rotary movement of the magnetic head by applying current to a coil. The main actuator includes end arms each comprising a single micro-actuator, and an intermediate arm comprising two micro-actuators. The micro-actuators of the end arms are driven in the same direction, and the micro-actuators of the intermediate arm are driven in the opposite direction to the drive direction of the micro-actuators of said the arms.

Magnetic head drive device with micro-actuators of end arms rotating in a direction opposite micro-actuators of intermediate arms

A flexible-printed-circuit (FPC) voice-coil assembly configured for integration in a voice-coil motor. The FPC voice-coil assembly includes at least one FPC voice coil. The FPC voice coil includes a coil including at least one coil turn, and a flexible substrate. The flexible substrate is coupled to the coil to form a flexible printed circuit. The FPC voice coil is configured for integration in a voice-coil motor. A voice-coil motor and a disk drive including the FPC voice-coil assembly are also provided.

Flexible-printed-circuit voice-coil assembly configured for integration in a voice-coil motor

A spoiler of a hard disk drive including a body portion coupled with a housing of the hard disk drive and adjacent to a hard disk, and an end portion coupled with the body portion, the end portion comprising a fan-shape, the spoiler extending radially with respect to the hard disk and parallel to a surface of the hard disk, wherein the fan-shape expands outward toward the tip end.

Reducing particles adhering to a hard disk

A hard disk drive including a housing, at least one disk mounted to the housing, an actuator mounted to the housing and being movable relative to the at least one disk, a conductive component support coupled with the actuator and extending the first surface, the conductive component support having a support wall attaching the conductive component support to the actuator, and a boss coupled with a first surface of the actuator and the support wall, the boss having a first end facing a flat coil side of the actuator and a second end facing a head gimbal assembly side of the actuator, wherein the first end extends further toward the flat coil side than the conductive component entrance portion of the conductive component support such that a portion of the boss overlaps a portion of the conductive component support.

Reducing air flow exposure to conductive components of a hard disk drive

A voice-coil motor (VCM) with voice coils configured to reduce vibrations of a head when data is accessed on a disk in a disk drive. The VCM includes at least one VCM magnet and a voice-coil assembly. The voice-coil assembly includes a first voice coil and at least a second voice coil. The first voice coil is disposed in proximity to a magnetic pole of the at least one voice-coil-motor magnet. The second voice coil is disposed in close proximity to the first voice coil such that the first voice coil substantially overlays the second voice coil. The first voice coil and the second voice coil are configured to reduce vibrations of the head when data is accessed on a disk in the disk drive. A rotary actuator including the voice coils and a disk drive including the VCM are also provided.

Voice-coil motor with voice coils configured oriented in the same direction and substantially overlayed to reduce head vibrations in a disk drive

Components and assemblies for a hard disk drive (HDD) with a recessed actuator joint are described. A rotary actuator hub assembly comprises a shaft having a flange, and a pivot seat on which the flange is seated when the shaft is fastened to an HDD chassis. According to an embodiment, the pivot seat has at least one 'contact-reducing feature' recessed from the surface of the pivot seat at which the seat contacts the flange. A purpose of the contact-reducing feature(s) of the pivot seat is to weaken the joint between the actuator hub assembly and the chassis, thereby mechanically loosening the rotary actuator assembly from the chassis. Consequently, movements to and vibrations from the chassis are less likely to be transmitted to the rotary actuator assembly and, ultimately, to the HDD read/write head(s).

Hard disk drive with recessed actuator joint

A voice coil includes a stack of a plurality of layers of aligned windings held between an outer holding portion and an inner holding portion of the carriage assembly. The carriage assembly is formed integrally with the voice coil through injection molding. An outermost peripheral layer is a conductive wire wound a number of turns that falls short of the number of turns required to constitute a complete layer. A step is thereby formed between the outermost peripheral layer and a layer adjacent thereto and inner therefrom. The outer holding portion includes a reinforcement portion formed thereon to cover part of a transverse end face of the voice coil. The outermost peripheral layer opposes a force acting on the outer holding portion from top downward and the reinforcement portion opposes a force acting on the outer holding portion from bottom upward.

Coil support structure and magnetic disk drive

Embodiments in accordance with the present invention reduce the height of a head gimbal assembly (HGA) while maintaining the rigidity of a load beam. According to one embodiment of the present invention, an HGA includes a slider, a flexure, and a load beam. The load beam includes a flange formed to protrude to the opposite side to a magnetic disk at the edge of the load beam extending in the length-wise direction. The load beam has a recessed portion opened to the side opposing the magnetic disk and having an opening area larger than the area of the back surface of the slider opposing the flexure. The slider is provided in the recessed portion so that the position of the surface of the load beam is between a virtual surface including the surface of the slider opposing the magnetic disk and a virtual surface including the slider back surface.

Head gimbal assembly with recessed portion and manufacturing method thereof

Embodiments of the present invention help to stabilize a tilt amount of a head gimbal assembly with respect to a magnetic disc. According to one embodiment of the present invention, in a head stack assembly in which a head gimbal assembly, a carriage, and a head gimbal assembly are stacked and fixed by a pivot cartridge, a spring washer and a nut, an annular recess portion having a length in the radial direction of a flange is formed on a contact face of the flange formed at one end of the cartridge, so that two places of a mount plate of the head gimbal assembly may be partially supported in the radial direction of the flange.

Rotational disc type storage device

A disk drive and an arm coil support assembly are to be provided which enables a trace to be disposed with a simple construction without the need of machining arms. In one embodiment, a trace for connection between a head and an FPC is disposed on an opposite surface of each of arms and opposite to a confronting surface of each of the arms which confronts a recording surface of a disk. The trace is bent nearly vertically in the vicinity of a connection between a coil support which supports the arms, and holds a VCM coil and the arm and is connected to the FPC. The coil support includes a force mechanism having a gap for insertion therein of the trace and also having a pressure portion spaced through the gap from the surface on which the trace is disposed. The force mechanism prevents wafting of the trace from the opposite surface of the arm caused by the bending of the trace.

Disk drive and arm coil support assembly

Embodiments in accordance with the present invention provide achieve an increase of storage capacity and thinning down of a disk drive by reducing effects from an error in an assembly position of a ramp. A data storage device according to an embodiment of the present invention includes a head, a ramp, a load beam, and an actuator. The ramp includes a portion onto which the head is retracted from a surface of a medium. The load beam includes a head support portion that supports the head and a tab disposed more on the side of a leading end than the head support portion. The tab has a leading end that slides over, while being in contact with, a sliding surface of the ramp. The actuator includes the load beam and loads and unloads the head.

Data storage device and disk drive

Embodiments in accordance with the present invention relate to suppressing deterioration in rigidity and dynamic characteristics of a tab even when an initial point of contact between a tab and a ramp during unloading is set closer to the outer periphery of a disk. A data storage device in one embodiment of the present invention includes a head, a ramp for unloading the head, a load beam having a head support portion for supporting the head and a tab adapted to slide on a sliding surface of the ramp on a front end side with respect to the head support portion, and an actuator having the load beam and adapted to actuate the head for loading and unloading. During unloading, a portion of the tab offset from the center in the transverse direction of the tab first comes into contact with the sliding surface of the ramp. The load beam has a flange formed to be bent and continuously from the front end portion of the tab up to both ends of the head support portion.

Data storage device

Terminals of a flexible printed circuit board and terminals of a wiring trace in a head suspension assembly are to be connected with each other by soldering without causing a soldering defect. In an embodiment, a terminal structure of a multi-connector in a wiring trace which includes an insulating layer and a conductor pattern portion formed on a surface of the insulating layer is provided with exposed portions of terminals exposed from apertures formed in part of the insulating layer and is also provided with lining portions adjacent to the exposed portions in a longitudinal direction of the conductor pattern portion and bonded to the insulating layer. Even if terminals of the multi-connector are cracked when soldered, not only conductivity is ensured, but also it is possible to strengthen the terminals, because the lining portions of the terminals are bonded to the insulating layer.

Magnetic disk drive, wiring connection structure and terminal structure

Embodiments of the invention provide a data storage device improved in sealability between a base and a cover when sealed together, as well as a method of manufacturing the data storage device, are to be provided. In one embodiment, a disk enclosure of a hard disk drive includes a base in which a disk is accommodated, a top cover which covers an intra-base space, and a sealing tape for sealing a peripheral edge portion of the cover. The base is provided in an outer edge portion thereof with a covered portion which is covered with the sealing tape. In the covered portion, a sealed portion to which the sealing tape adheres is inclined so that an outer edge thereof becomes higher than an inner edge thereof.

Growing community of inventors

Kanagawa, Japan

Takaaki Deguchi