Title:
【発明の名称】ボイスコイルモータ
Document Type and Number:
Japanese Patent JP3224256
Kind Code:
B2
Abstract:
A voice coil motor is disclosed which conveys a head of optical or magneto-optical disk drive or magnetic disk drive as a kind of a linear motor. The motor comprises a yoke member composed of a central portion, upper/lower fringes and left/right fringes forming magnetic paths, permanent magnets being adhered on the upper/lower fringes of the yoke member and each having an air gap with respect to the central portion. A moving coil is wound slidably around the central portion of the yoke member, and a shorted turn offsets the magnetic flux due to the current flowing in the moving coil, wherein the shorted turn has a plurality of fins on its conductive sleeve-shaped body and is disposed primarily in the yoke member except the section where the moving coil moves. The motor demonstrates an excellent control function while generating a maximum amount of thrust.
Inventors:
Shen Shun Tin
Application Number:
JP1897692A
Publication Date:
October 29, 2001
Filing Date:
February 04, 1992
Export Citation:
Assignee:
Samsung Electric Co., Ltd.
International Classes:
H02K33/18; H02K41/035; G11B7/085; (IPC1-7): H02K33/18
Domestic Patent References:
| JP63164371U | ||||
| JP58179885U |
Attorney, Agent or Firm:
Tadahiko Ito (2 outside)