摘要:
Disclosed herein is a rotary actuator having a retractor mechanism which can retract magnetic heads to a CSS zone of magnetic disks only by a mechanical bias force in stopping a magnetic disk drive at any cylinder position of the heads. The rotary actuator includes an actuator arm assembly rotatably mounted on a base of the magnetic disk drive, an FPC mounted on one side surface of the actuator arm assembly, and a magnetic circuit constituting a voice coil motor by combination with a moving coil supported to the actuator arm assembly. A retractor plate is fixed to the actuator arm assembly at a position opposite to a mounting position of the FPC with respect to the center of rotation of the actuator arm assembly. The retractor plate functions to retract the magnetic heads to the CSS zone of the magnetic disks by magnetic reaction with a magnetic flux in the magnetic circuit.
摘要:
A mold used to manufacture, through metal mold casting, a damper that is fixed onto a housing in a disc drive and reduces a vibration of the housing, the disc drive recording information in and reproducing information from a recording medium. The mold includes a sectionally concave body that defines a shape of the damper, a first gate that introduces molten metal to the body from a runner, and is provided on a first side opposite to a concave of the body, and a second gate that introduces the molten metal to an overflow well from the body, and is provided at least one of a second side perpendicular to the first side, and a third side perpendicular to the second side and parallel to the first side.
摘要:
A magnetic disc apparatus has a ramp holding the magnetic head in a position apart from the magnetic disc and a filter case holding a filter in the state of being bent in such a manner that the filter surrounds the ramp together with the magnetic disc. The filter removes dust in airflow which flows in the magnetic disc apparatus accompanying the rotation of the magnetic disc.
摘要:
A magnetic disk device includes a swing-type head actuator which is driven by a voice coil motor. The voice coil motor is cooled by an airflow generated when a magnetic disk accommodated in a disk accommodating unit of an enclosure is rotated by a spindle motor. An airflow dividing member provided on an inner wall or a base of an actuator accommodating unit divides the airflow generated by the rotation of the disk and passing along the inner wall. The divided airflow is introduced to a coil part of the voice coil motor, and cools the coil, without sacrificing the dust purge performance.
摘要:
A mold used to manufacture, through metal mold casting, a damper that is fixed onto a housing in a disc drive and reduces a vibration of the housing, the disc drive recording information in and reproducing information from a recording medium. The mold includes a sectionally concave body that defines a shape of the damper, a first gate that introduces molten metal to the body from a runner, and is provided on a first side opposite to a concave of the body, and a second gate that introduces the molten metal to an overflow well from the body, and is provided at least one of a second side perpendicular to the first side, and a third side perpendicular to the second side and parallel to the first side.
摘要:
A disk apparatus includes a ramp which holds a tip end of an arm at a position away from a disk, and a slit shroud having an airflow control plate. A side surface of the airflow control plate is opposed to a side surface of the disk, the airflow control plate spreads to a position where the airflow control plate is superposed on the tip end of the arm held by the ramp. The airflow control plate has the same thickness as that of the disk, and is flush with the disk 12.
摘要:
A first shroud and a second shroud are opposed to the peripheral end surface of a recording disk at a certain constant distance. The second shroud is spaced downstream from the first shroud in the direction of the rotation of the recording disk. A shroud plate is opposed to the peripheral end surface of the recording disk at a position between the first and second shrouds. The shroud plate functions as a shroud. The shroud plate serves to suppress turbulence of airflow. Vibration of the recording disk can be suppressed. Moreover, if the shroud plate is designed to extend along a virtual plane perpendicular to the rotation axis of the recording disk, the airflow is prevented from staying between the first and second shrouds. The airflow can effectively be taken out. The airflow can effectively be utilized.
摘要:
First and second shroud surfaces are defined along an imaginary cylinder coaxial to a recording disk. A shroud plate is located between the first and second shroud surfaces. Airflow flows outward along the surface of the rotating recording disk based on the centrifugal force. The shroud plate serves to establish the continuity of the first and second shroud surfaces. The first and second shroud surfaces and the shroud plate serve to reliably suppress turbulence of the airflow. Vibration of the recording disk is suppressed than ever. An inflow opening is located in a space between the first and second shroud surfaces. The rectifier plate is located downstream of the inflow opening. The rectifier plate serves to direct the airflow flowing along the first shroud surface to the inflow opening. A larger amount of airflow can be introduced into the inflow opening. A dust catcher receives airflow of a sufficient amount.
摘要:
A magnetic disk device includes a swing-type head actuator which is driven by a voice coil motor. The voice coil motor is cooled by an airflow generated when a magnetic disk accommodated in a disk accommodating unit of an enclosure is rotated by a spindle motor. An airflow dividing member provided on an inner wall or a base of an actuator accommodating unit divides the airflow generated by the rotation of the disk and passing along the inner wall. The divided airflow is introduced to a coil part of the voice coil motor, and cools the coil, without sacrificing the dust purge performance.
摘要:
A magnetic disc apparatus has a ramp holding the magnetic head in a position apart from the magnetic disc and a filter case holding a filter in the state of being bent in such a manner that the filter surrounds the ramp together with the magnetic disc. The filter removes dust in airflow which flows in the magnetic disc apparatus accompanying the rotation of the magnetic disc.