Abstract: A magnetic disk drive unit can is designed for reducing weight, improving impact resistance, improving removing ability, and achieving easiness of assembling and lower a cost in a magnetic disk drive unit. The magnetic disk drive unit includes a spindle motor mounting a magnetic disk, a carriage mounting a magnetic head for recording and reproduction, a park mechanism for placing the magnetic head retracted from the magnetic disk at stand-by state where recording and reproducing are not performed, a single rigid frame mounting the spindle motor, the carriage and the park mechanism thereon for forming an assembly, and a casing housing and fixing the assembly, the casing being formed of an elastically deformable material.

Abstract: A moving body (10) is composed of a main body (11), piezoelectric elements (13), (13′) secured to the sides of the main body in the traveling direction thereof, and coils (12), (12′) secured to the piezoelectric elements (13), (13′). A magnet is disposed on a guide rail and the coils (12), (12′) are energized, and whereby the moving body (10) can be moved a long distance at high velocity by a magnetic type linear motor system. Further, the coils (12), (12′) are energized, the main body (11) is pressed against the guide rail on which the magnet is mounted by the magnetic force that is generated by the energization of the coils (12),(12′) and the piezoelectric elements (13), (13′) are extended and contracted by a voltage applied thereto, thereby the moving body (10) is impact driven. With this operation, the moving body can be micro driven at a pinpoint accuracy.

Abstract: A magnetic disk drive is constructed by at least one magnetic disk, a spindle motor, an actuator containing a magnetic head, a flexible printed-circuit board and a package. Herein, mechanical parts are basically installed in a disk enclosure, while electronic parts are mounted on the package. A base of the magnetic disk drive is extended in both sides of the disk enclosure to provide multipurpose spaces, which are equipped with a shockabsorber mechanism for improvement of impact resistance and/or a heat-radiation mechanism for improvement of heat radiation. Herein, the package is stored in the multipurpose space, which is covered with a back cover being attached to the base of the magnetic disk drive. Thus, it is possible to reduce an overall thickness of the magnetic disk drive; it is possible to improve portability of the magnetic disk drive; and it is possible to prevent the electronic components from being damaged or subjected to electrostatic destruction.

Abstract: In a magnetic disk apparatus including a base, a magnetic head, a magnetic disk, and a spindle motor having a stator fixed to the base and a rotor for mounting the magnetic disk, a ramp road structure for parking the magnetic head is fixed to the stator.

Abstract: A magnetic disk drive unit can is designed for reducing weight, improving impact resistance, improving removing ability, and achieving easiness of assembling and lower a cost in a magnetic disk drive unit. The magnetic disk drive unit includes a spindle motor mounting a magnetic disk, a carriage mounting a magnetic head for recording and reproduction, a park mechanism for placing the magnetic head retracted from the magnetic disk at stand-by state where recording and reproducing are not performed, a single rigid frame mounting the spindle motor, the carriage and the park mechanism thereon for forming an assembly, and a casing housing and fixing the assembly, the casing being formed of an elastically deformable material.

Abstract: A magnetic disk drive is provided, which decreases the profile or height of the drive itself without reliability degradation, realizing a low-profile and large-capacity magnetic disk drive. The drive comprises: (a) a rotatable magnetic disk around an axis; (b) a spindle motor for rotating the disk; (c) a magnetic head for writing information into the disk and for reading information from the disk; (d) an actuator for positioning the head at a desired position over the disk; (e) a disk enclosure for enclosing the disk, the motor, the head, and the actuator; (f) a circuit board fixed to the enclosure; the board having necessary circuits and necessary electronic elements for controlling operation of the drive; the board having a projecting part located outside a footprint of the enclosure; at least part of the elements being mounted on the projecting part.