Patent ID: 6816343
Filing Date: 2004-11-09
Classification: G11B

Abstract:
A disk drive comprising:a disk drive base; an actuator rotatably coupled to the disk drive base, the actuator including an actuator body configured to pivot about an axis of rotation and a coil support extending from the actuator body; a magnetic element coupled to the disk drive base and defining a magnet periphery, the magnetic element including: an inner magnet set including first and second inner magnets having opposing field directions; and an outer magnet set including first and second outer magnets, the first outer magnet being circumferentially disposed along the first inner magnet and having a field direction opposite the field direction of the first inner magnet, the second outer magnet being circumferentially disposed along the second inner magnet and having a field direction opposite the field direction of the second inner magnet; and a coil attached to the coil support and disposed overlapping within the magnet periphery, the coil including an inner segment, an outer segment, and a pair of side segments electrically connecting the inner and outer segments, the inner segment being disposed overlapping with the inner magnet set the outer segment being disposed overlapping with the outer magnet set, each of the side segments being disposed equally overlapping with the inner and outer magnet sets.