Hard disk drive for use in computer, has reading-writing head rotating hollow cylinder coupled with head over signal amplifier in data transfer manner and serving as contactless interface between coil movable to head and static coil

摘要

The hard disk drive has a static coil stationarily inserted in proximity to a reading-writing head rotating hollow cylinder (3). A carrier transmits the signal to a hard disk controller and a data processing system. Another coil is inserted close to the center of the hollow cylinder. The hollow cylinder is coupled with a reading-writing-head (6) over a signal amplifier in electrically signal or data transfer manner and serves as a contactless interface between the coil movable to the reading-writing-head and the static coil.