| 摘要 |
PROBLEM TO BE SOLVED: To provide a disk unit wherein an inertia latch mechanism can efficiently be operated even when a VCM is made thin. SOLUTION: The inertia latch mechanism includes: a latch arm for latching a head actuator at an retracting position; and an inertia arm 52 supported turnably around a second pivotal axis 54 extended almost perpendicularly to a base and turned around the second pivotal axis when an external force is exerted to the inertia arm to turn the latch arm to a latch position. The voice coil motor (VCM) 16 includes: a lower yoke 41; a top yoke 43; a voice coil 36 fitted to the head actuator and located between the lower yoke and the top yoke; and a permanent magnet provided to at least either of the lower yoke and the top yoke. The top yoke has an arm retaining section 48 extended by being overlapped with the second pivotal axis and a part in the vicinity of the second pivotal axis of the inertia arm so as to restrict the inertia arm from coming off from the second pivotal axis, and the arm retaining section is formed to be integrally extended from the top yoke and have a stepwise shape higher than the top yoke by one step. COPYRIGHT: (C)2006,JPO&NCIPI
|
