Citizen Watch Company, Ltd.

Yushi Kawasaki

Kazuyuki Sunaga

Yu Yasuda

A double-sided magnetic head supporting mechanism for reading and writing data on a floppy disk. One of the magnetic heads is mounted on either a carriage or an arm in a fixed state by a gimbal pair assembly which is movable only vertically and restrained from inclining, and the other magnetic head is mounted on either an arm or a carriage by a biaxial gimbal spring. The gimbal pair assembly includes a pair of opposing biaxial gimbal springs disposed with a space therebetween and a spacer for fixing the central portions of the gimbal springs. The head is mounted on the central portion of one of the gimbal springs. Since the pair of gimbal springs are integrally fixed at the central portions by a spacer, the gimbal pair assembly can move only vertically, so that parallel vertical movement only is allowed to the head mounted on the gimbal pair assembly with inclination being removed therefrom. Thus, when the double-sided head vertically moves in accordance with the movement of the floppy disk, no offtrack is caused.

Double gimbal magnetic head supporting mechanism for a floppy disk drive

A double head supporting mechanism for a magnetic disk drive including an arm body and a carriage. The arm body includes an upper arm and a lower arm which are supported at their rear ends in a mutually rotatable manner. Both arms support an upper head and a lower head, respectively. Both of these heads hold a magnetic disk from both sides, at a mutually facing position, by having the magnetic disk inserted between them. The carriage is able to make reciprocal movement along the direction of the disk diameter. The arm body is held on its rear end side by the carriage in such a manner that it can swing freely by means of a common supporting spring. Both heads are constructed with a design so that they can follow the vertical deviation of the magnetic disk caused during rotation of the disk. The carriage is provided with a stopper to stop the lower arm from moving excessively. One of the heads is fixed to one of the arms, while the other head is held by the other arm through a gimbal spring in an inclinable manner. The common supporting spring is disposed along nearly the same plane as that of the magnetic disk.

Growing community of inventors

Tokyo, Japan

Yushi Kawasaki