DISK DRIVE APPARATUS HAVING AN IMPROVED SPINDLE MOTOR LOADING MECHANISM

摘要

A disk drive apparatus has an eject member (44) that moves in tandem with a disk cartridge from a first position to a second position upon insertion of the disk cartridge into the apparatus. The eject member (44) has a projection (64) formed thereon. A first spring (66) biases the eject member (44) in a direction opposite the direction of insertion of the disk cartridge. A motor ring assembly (46) for holding a spindle motor has a rotating member (106) that rotates between an unloaded position and a loaded position. A second spring (68) biases the rotating member (106) toward its loaded position. The rotating member (106) has a first cam surface, a second cam surface extending substantially perpendicular to the first cam surface, and a lead-in cam angle surface between the first and second cam surfaces at an angle thereto. A shape memory alloy wire (92) is provided to rotate the rotating member (106) from its loaded position toward its unloaded position.