Abstract: A hard disk drive including a plurality of magnetic disks and a voice coil motor. The voice coil motor includes a coil and a first damper plate for dampening vibrations generated by the coil. The first damper plate is disposed within the voice coil motor.

Abstract: A carriage block body is coupled to a support shaft for relative rotation. The carriage block body defines a bearing hole receiving the support shaft. A carriage arm extends from the carriage block body along an imaginary plane perpendicular to the longitudinal axis of the support shaft. The carriage arm has a wall surface defining a cylindrical space at the tip end of the carriage arm. A projection is formed on the wall surface at a position off an intermediate plane set perpendicular to the longitudinal axis of the cylindrical space so that the cylindrical space is equally divided into a first cylindrical space and a second cylindrical space by the intermediate plane. The projection protrudes into the first cylindrical space.

Abstract: A storage apparatus includes a magnetic circuit applying driving force to a carriage. The magnetic circuit includes a first yoke provided with a magnet. An end of the first yoke is secured using a first fastening member screwed in a threaded hole in an end of the base. A second yoke is opposed to the first yoke, and an end of the second yoke is secured using a second fastening member screwed in a threaded hole in another end of the base. A driving coil is held by the carriage and disposed between the first yoke and the second yoke so that the first yoke and the second yoke are attracted to each other by magnetic force of the magnet.

Abstract: This invention includes a carnage assembly for carrying read/write heads into engagement with a recording medium. The carriage assembly comprises a carriage body formed from molded plastic. The body defines a sidewall having a first open end and a second open end with a passage extending therebetween. A coil is interlockingly coupled with the carriage body sidewall by being molded to carriage body. At least one carnage arm for carrying at least one head is interlockingly coupled with the carriage body sidewall by being molded to the carnage body.

Abstract: The present invention provides a disk drive apparatus for recording and/or playing back a signal onto and/or from a disk-shaped recording medium. The disk drive apparatus has a configuration comprising a head arm for supporting a magnetic head. The head arm is provided with an arm base made of a rigid material and a suspension implemented by a plate spring. Since in the configuration of the disk drive apparatus provided by the present invention includes a head arm which is provided with an arm base made of a rigid material and a suspension implemented by a plate spring, the length of the suspension can be shortened and the positional precision of the magnetic head can be assured with a high degree of reliability.

Abstract: A head carriage lock mechanism for a magnetic disk drive has a lock member, a lifter, a link member and a solenoid. The lock member is shaped in the form of a quadrilateral frame, with arms extending perpendicularly from a front panel and a rear panel so as to connect the two panels. The right arm of the lock member, which approaches the head carriage, has a rack that engages an engaging portion of the head carriage so as to lock the head carriage in place so as to prevent damage to the head carriage during transport. The solenoid that drives the lock mechanism is positioned inside the space enclosed by the frame of the lock member, making more efficient use of the space inside the disk drive and making it possible to make the disk drive more compact.

Abstract: A disk drive includes a head carriage movable in a radial direction of a disk mounted on the disk drive, a guide rod fixed on a frame of th disk drive for guiding the head carriage, a voice coil motor including a magnetic circuit screwed on the frame and a drive coil mounted on the head carriage, a guide-rod catching member provided on the frame so as to catch the guide rod, and a resilient guide-rod urging member resiliently urging the guide rod against the guide-rod catching member, wherein the resilient guide-rod urging member is screwed on the frame together with the magnetic circuit.

Abstract: In a recording/reproducing device for use in recording and reproducing data on and from a recording medium while moving read/write head means relative to the recording medium in a moving direction, which comprises a carriage supporting the read/write head means and guided by a guiding member in the moving direction, and a voice coil motor comprising a voice coil and a magnetic circuit device for driving the carriage in the moving direction. The carriage has a coil holding portion by which the voice coil is fixedly held in the condition that the coil axis is arranged in the moving direction. The voice coil is applied with a driving electric current for driving the carriage. The magnetic circuit device is fixedly disposed adjacent to the voice coil to generate a magnetic field intersecting the driving current flowing through the voice coil, the voice coil moving in the moving direction together with the carriage by an interaction of the driving current and the magnetic field.

Abstract: The present invention provides a disk drive apparatus for recording and/or playing back a signal onto and/or from a disk-shaped recording medium. The disk drive apparatus having a configuration comprising a head arm for supporting a magnetic head. The head arm is provided with an arm base made of a rigid material and a suspension implemented by a plate spring. Since in the configuration of the disk drive apparatus provided by the present invention includes a head arm which is provided with an arm base made of a rigid material and a suspension implemented by a plate spring, the length of the suspension can be shortened and the positional precision of the magnetic head can be assured with a high degree of reliability.

Abstract: The present invention provides a disk drive apparatus for recording and/or playing back a signal onto and/or from a disk-shaped recording medium. The disk drive apparatus having a configuration comprising a head arm for supporting a magnetic head. The head arm is provided with an arm base made of a rigid material and a suspension implemented by a plate spring. Since in the configuration of the disk drive apparatus provided by the present invention includes a head arm which is provided with an arm base made of a rigid material and a suspension implemented by a plate spring, the length of the suspension can be shortened and the positional precision of the magnetic head can be assured with a high degree of reliability.

Abstract: A disk apparatus includes a read/write head which reads information from or writes information to a recording disk. A movable head carriage supports the head thereon. The head carriage is movably supported on a guide shaft, and the guide shaft guides a movement of the head carriage. A head actuator exerts an actuating force on the head carriage to move the head, supported on the head carriage, in a radial direction of the disk. In the disk apparatus, the head carriage has a center of gravity at a position biased from a centerline of the head carriage and adjacent to the guide shaft, and the head actuator is attached to a side of the head carriage and has a centerline at a position adjacent to the guide shaft.