Hard disk drive
AssigneeSamsung Electronics Co., Ltd.
InventorsWoo Chul Kim, Chul Woo Lee
Life of this patent
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Abstract
A hard disk drive includes a head stack assembly including an actuator arm, a voice coil coupled to a bobbin, and a pivot shaft holder, rotatably coupled to a pivot shaft, disposed between the actuator arm and the voice coil. The hard disk drive also includes at least one magnet, disposed adjacent to the voice coil, which interacts and with the voice coil when current flows in the voice coil, thus generating an electromagnetic force to pivot the actuator arm around the pivot shaft, and a flux fringe prevention layer comprising a magnetic material and coupled to the voice coil, to prevent magnetic flux generated in the magnet being bent in the voice coil.
Claims11
A hard disk drive comprising:
- a voice coil coupled to a bobbin provided at the opposite direction of an actuator arm with respect to a pivot shaft holder rotatably supporting a pivot shaft;
- at least one magnet that is disposed adjacent to the voice coil and interacts with the voice coil when current flows in the voice coil, to thereby generate an electromagnetic force to pivot the actuator arm around the pivot shaft;
- and
- a flux fringe prevention layer that comprises a magnetic material and is coupled to the voice coil, the flux fringe prevention layer preventing a magnetic flux generated in the magnet from being bent in the voice coil.
Dependencies are inferred from the claim text.