Hitachi Global Storage Technologies Netherlands B.v.

Western Digital Technologies, Inc.

International Business Machines Corporation

Naoaki Kanada

Keiichiroh Yoshida

Mutsuro Ohta

Jun Ishikawa

Hitoshi Tsujino

Kohichi Takeuchi

Naoshi Mizumoto

Kazuyoshi Yoshida

Takao Suzuki

Jian Chen

Kohji Takahashi

Takeji Sumiya

Jiro Kaneko

Gentaro Nakamura

Ichiro Koyanagi

Gantaro Nakamura

Toshihiko Yuki

Toshihiko Yuhhi

Described herein is a hard disk drive that includes a base and a cover. The base includes a closed end, sidewalls, an open end, and one or more corner portions. The sidewalls extend from the closed end, and the open end is defined by the sidewalls. The closed end, sidewalls, and open end define an interior cavity of the hard disk drive. Each corner portion is proximate a respective intersection of the sidewalls and positioned exteriorly of the interior cavity. The cover is welded to the sidewalls over the open end by a weld bead such that the weld bead is positioned between the interior cavity and the corner portions. The weld bead hermetically seals the cover to the base. Furthermore, at least one of the corner portions is at least substantially flush with the cover.

Base for protecting external welds of hermetically sealed electronic devices

An electrical feed-through, such as a PCB connector, involves a connector part that includes a housing from which first and second positioning flanges extend from opposing ends. A data storage device includes an enclosure base with which the electrical feed-through is coupled, where the base comprises an annular recessed surface surrounding an aperture that is encompassed by the electrical feed-through, and first and second recessed positioning surfaces extending in directions outward from respective longitudinal ends of the annular recessed surface, where each of the recessed positioning surfaces has a corresponding wall extending vertically therefrom. When assembled, each positioning flange of the electrical feed-through mechanically mates with a corresponding recessed positioning surface of the base, such that the position of the electrical feed-through is constrained by the walls of each recessed positioning surface.

Sealed bulkhead electrical feed-through X-Y positioning control

Turbulence of an airflow returning to a magnetic disk along the base sidewall of a HDD is reduced to thereby reduce flutter of an actuator or a magnetic disk caused by the airflow, thus improving read/write performance. An HDD according to an embodiment of the present invention comprises a base, a top cover fixed to the base, a motor for rotating a magnetic disk, an actuator for moving a head which gets access to the magnetic disk, a ramp slope portion on which an extreme end is ridden up, a ramp support portion for supporting the ramp slope portion, and a stage for holding the ramp support portion. A flow passage is formed which runs toward the magnetic disk through an area near the ramp support portion on the side of the top cover. An inclined portion running toward the bottom of the base is formed on the end of the flow passage on the side of the magnetic disk.

Disk drive with an air flow passage within enclosure to reduce flutter

A rebounding phenomenon of an actuator assembly is to be prevented and device assembling work and maintenance work are to be carried out separately from stopper removing work. In one embodiment, a magnetic disk device includes a stopperfor restricting a turning range of an actuator assemblyhaving a coil supportin a magnetic disk device. In the stopper, rubberis cantilevered by a support rodso as to undergo a moment of force and fulfill a shock absorbing function in order to restrict an excessive movement of the actuator assemblyto an inner or an outer side when the rubberis abutted against a first armor a second armof a bifurcated shape of the coil support, the support rodis disposed outside a turning track of turning ends of the first and second armsof the coil support, and a permanent magnetis embedded in the rubberto attract the first and second arms

Rotary disk storage device

The invention prevents the deterioration of the read/write performance of a hard disk drive due to the interference between an inertial latching mechanism and an actuator when a head slider holding a magnetic head is located at a read/write position. A latching armprovided with a projectionand included in an inertial latching mechanism, and a partof a coil holding armincluded in an actuator are formed in shapes such that the latching armprovided with the projectiondoes not interfere with the coil holding armhaving the partwhen a head slider mounted on the actuator is located at a read/write position on a magnetic disk.

Inertial latching mechanism for disk drive actuator

In a hard disk drive, there are provided a head assemblythat drives a magnetic headthat reads and writes data on a recording disk, and a flange section that extends toward the periphery on the sleeveof a pivot memberthat supports this head assemblyso that it is free to pivot; and planar sectionsA andB are formed on the peripheral surface of this flange section in order to adjust the balance of the center of gravity of the head assembly.

Disk drive apparatus having a pivot for supporting a head assembly to allow free pivoting

A flexible cable assembly (FCA) has a flexible cable, first and second brackets attached to the flexible cable, and a band for holding the first and second brackets while the flexible cable is folded back and the first and second brackets overlap. The band is detachably mounted to the first and second brackets to facilitate efficient manufacturing and disassembly methods. The FCA may be implemented at various manufacturing stages including the head suspension assembly (HSA) or the entire hard disk drive (HDD) assembly.

Flex cable, head suspension assembly, and hard disk drive

Growing community of inventors

Kanagawa, Japan

Naoaki Kanada