Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
VOICE COIL MOTOR
Document Type and Number:
Japanese Patent JPH03178546
Kind Code:
A
Abstract:

PURPOSE: To reduce a leakage magnetic flux which affects adverse influence to a magnetic disk without increasing in size by providing a magnetic shielding member at any one or the other of first and second yokes through a nonmagnetic member.

CONSTITUTION: A nonmagnetic member 13 made of an aluminum plate or the like is adhered to the outside of an inner yoke 8 which affects adverse influence of a leakage magnetic flux to a magnetic disk, and a magnetic shielding member 14 having large permeability such as a permalloy plate or the like is adhered thereto. Thus, the magnetic flux leaked from the yoke 8 is shielded by the member 14 provided to be magnetically insulated to largely reduce the leakage magnetic flux, thereby remarkably reducing the influence to the disk.


Inventors:
Ogawa, Yoshinori
Application Number:
JP1989000315715
Publication Date:
August 02, 1991
Filing Date:
December 05, 1989
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
FUJITSU LTD
International Classes:
H02K33/18; (IPC1-7): H02K33/18