Oki Electric Industry Co., Ltd.

Masahiro Shigei

Masahiro Tatsukami

Shugo Suto

A flexible disk drive includes a reset lever which holds an upper head in an upper or open position in an unloaded condition of a magnetic head and, interlocked with a closing motion of a door, moves downward together with the upper head, and a head load arm rotatable in response to downward movement of the reset lever to allow the upper head to make contact with a floppy disk. Connected to the head load arm is toggle device whose biasing direction is inverted by the rotation of the arm to bias the arm toward the disk. A hub adapted to rotate a floppy disk is located to face a collet which is adapted to align the center of the disk with that of the hub. When the door is closed while a floppy disk is not inserted, the collet is brought into engagement with the hub. At this instant, a gap is defined between the upper head and a lower head by a clamp lock to prevent the two heads from making contact with each other. While a floppy disk is inserted, the collet cooperates with the hub to check the disk in response to a closing motion of the door. A sequence lever responsive to a closing motion of the door allows the upper head to contact the disk thereafter. This provides a reliable manual head loading mechanism which insures accurate chucking of a floppy disk.

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Tokyo, Japan

Masahiro Shigei