Mechanism for attaching and detaching disk cartridge from a disk drive

Abstract

A mechanism for attaching and detaching a disk cartridge in a disk drive unit has a receiver for holding the disk cartridge having a disk for record and reproduction therein; a carrier having cam portions arranged on right-hand and left-hand sides of the receiver and engaged with rollers, the carrier being moved forward and backward to raise and lower the receiver; and inclination angle of the cam portions being small in a contructional portion thereof corresponding to a height of the rollers when the disk cartridge is separated from a magnet for attracting the disk at an ejecting time of the cartridge; the inclination angle of the cam portions being small in a constructional portion thereof corresponding to a height of the rollers when the disk cartridge is pressed against a guide pin at a loading time of the cartridge; and the inclination angle of the other constructional portions of the cam portions being large. The cam portions are arranged forward and backward on sides of the carrier. A constructional portion of a rear cam portion corresponding to the height of the rollers at the separating time of the disk cartridge from the disk attracting magnet at the ejecting time of the cartridge is set in a position higher than that of a constructional portion of a front cam portion corresponding to the height of the rollers.