Fujitsu Corporation

Kazunori Shikano

Mitsuaki Yoshida

Yoshinori Ogawa

Yuji Sasaki

Masato Ishikawa

Shinichi Fukuzawa

Masaki Jinbo

A circulation filter mounting structure in a disk drive including a housing having a base and a cover fixed to the base, a disk as a storage medium rotatably contained in the housing, and a head contained in the housing for recording and reproducing data on the disk. The circulation filter mounting structure includes a wall provided between an outer circumference of the disk and an inner surface of the housing, for partially blocking an air flow generated by rotation of the disk, the wall extending in a direction substantially perpendicular to a radial direction of the disk, and a filter mounted between the wall and the inner surface of the housing, for collecting dust.

Circulation filter mounting structure in disk drive

Disclosed is a magnetic disk apparatus constructed to reduce a track positional deviation of a magnetic head. This magnetic disk apparatus includes a rotary mechanism for rotating the magnetic disk and a rotary type actuator, provided with the magnetic head at its front end, which magnetic head has a write head and a read head, for moving the magnetic head in such a direction as to traverse tracks of the magnetic disk by making rotations about a rotary shaft. A distance A from the center of rotation of the rotary type actuator to the magnetic head is set equal to or larger than a distance B from the center of rotation of the rotary type actuator to the center of rotation of the magnetic disk. Even when separating a write element and a read element, the track positional deviation of the magnetic head can be reduced. This magnetic disk apparatus includes an enclosure accommodating both of a rotary mechanism and the rotary type actuator and having a base taking such a configuration that one side surface thereof is opened and a cover fitted in the base, wherein a side for separating the base and the cover is formed at a slant to a long side of the apparatus. This construction makes it possible to enhance a rigidity of the enclosure and reduce the track positional deviation of the magnetic head.

Magnetic disk apparatus

A rotary type actuator for a magnetic disk device includes a magnetic head that traverses tracks of the magnetic disk as the actuator rotates about a rotary shaft. The rotary type actuator has at least one arm for the magnetic head at its front end. A first flat cable has one end connected to the rotary type actuator, for making an electrical connection to the electronics in the disk device. A second flat cable is provided on the side surface of the arm, for electrically connecting the magnetic head to the first flat cable. The first flat cable includes a plurality of lands arranged along an extended direction of the arm. The second flat cable includes a first land group provided at one end of the second flat cable for electrically connecting to the magnetic head. The first land group has a plurality of lands arranged along an extended direction of the arm. A second land group is provided at the other end of the second flat cable for electrically connecting to the first flat cable. The second land group has a plurality of lands arranged along the extended direction of the arm, disposed in face-to-face relationship with the lands of the first flat cable, and a lead pattern is provided for electrically connecting the first land group and the second land group. In this manner, the second flat cable overlaps with the first flat cable at the other end.

Flat cable connecting system for rotary type actuators in magnetic disk

A storage apparatus such as a magnetic disk drive or an optical disk drive having dual I/O ports is disclosed. The storage apparatus has a connector mounting structure which reduces the number of parts and produces a cost savings. When used in a disk drive, the storage apparatus incudes a disk enclosure, a printed circuit board arranged on the bottom surface of the disk enclosure, and connectors mounted on the printed circuit board. One end of the printed circuit board is extended to project from the disk enclosure and the connectors are mounted on the surface of the projecting portion of the printed circuit board so that the connecting direction of the connectors orthogonally crosses the plane of the printed circuit board.

Disk drive apparatus having dual I/O connectors

A disk apparatus includes a rotatable disk having at least one recording surface, a head for reading or writing information from or to the rotatable disk, a head drive for moving the head across the recording surface of the rotatable disk within a head moving range, and an enclosure for housing therein the rotatable disk, the head and the head drive. A printed circuit board is mounted on the enclosure. A shielding member is attached to the outer surface of the enclosure and located in a space defined between the enclosure and the printed circuit board. The shielding member has a size substantially corresponding to the head moving range.

Disk apparatus with shielding member in a head moving range

A sealing structure for a magnetic disk drive unit having a favorable assembling workability. The sealing structure includes a base housing for receiving therein a plurality of hard disks, a spindle motor assembly for rotating the hard disks, and an actuator assembly, and having an upper surface on its outer peripheral portion, on which upper surface a plurality of projections of a predetermined height are formed; an annular packing assembly placed on the upper surface of the base housing along the projections formed on the upper surface, the annular packing assembly including a core member and a soft elastic member bonded to the core member; and a cover fixed to the base housing by crushing the packing assembly. The cover has an annular rib which is brought into abutment with the projections and the packing assembly when the cover is fixed to the base housing.

Growing community of inventors

Higashine, Japan

Kazunori Shikano