Patent ID: 6243229
Filing Date: 2001-06-05
Classification: G11B

Abstract:
A floppy disc drive chucking device, comprising:a rotor yoke which rotates in a certain direction, the rotor yoke comprising a drive pin through hole and a drive arm receiving hole;a center shaft, provided in a standing manner at the center of rotation of the rotor yoke, for being loosely inserted into a center hole formed in a center hub;a drive arm provided at a lower side of the rotor yoke so as to extend along a circumference thereof, both ends of the drive arm being loosely suspended from the rotor yoke by a front flange and a back flange, the front flange configured to loosely engage a portion of a top surface of the rotor yoke adjacent the drive pin through hole, the back flange configured to engage a portion of the top surface of the rotor yoke adjacent the drive arm receiving hole, the drive arm being biased in an upward direction;a drive pin formed on a front portion of the drive arm in a direction of rotation of the rotor yoke, the drive pin loosely passing through the drive pin through hole so as to extend in an upward direction, the drive pin being provided for being loosely inserted into a hole formed in a peripheral edge of the center hub and defined by a front edge and an outer edge, the front edge being formed in correspondence with a front portion of the rotor yoke in the direction of rotation of the rotor yoke, and the outer edge being formed away from the center of rotation of the rotor yoke; anda guide path formed at a back edge defining the drive pin through hole, a side of the guide path gradually inclining backwards as the side of the guide path extends away from the center of rotation of the rotor yoke, the back edge defining the drive pin through hole being formed so as to come into contact with the drive pin;wherein when the rotor yoke with a floppy disc placed thereon is rotated, the drive pin is interposed between the front edge defining the hole formed in the center hub and the side of the guide path, and is pushed towards the outer edge defining the hole formed in the center hub.