Swing-arm type linear d.c. brushless motor

Details Swing-arm type linear d.c. brushless motor Swing-arm type linear d.c. brushless motor

1989-10-12

1991-08-06

Beha, Jr., William H.

Electrical generator or motor structure

Dynamoelectric

Oscillating

310 36, H02K 3312

Patent

active

050380621

ABSTRACT:
Disclosed herein is a swing-arm type linear d.c. brushless motor, wherein at least one coreless type armature coil such as an air-core armature coil is arranged on the inner wall of a linear motor body and a field magnet is formed by magnetizing a magnet member with a single pair of N/S poles so as to permit the generation of thrust in a predetermined direction face to face with only one active conductor of said at least one armature coil and which does not contribute to the generation of reverse thrust. The field magnet is opposite through an air-gap in the axial direction to only the active conductor portion, and is supported relatively and swingably through the air-gap. It is suitable for use in small, economical and high-speed magnetic head positioner mechanisms more useful in small-capacity magnetic disk units and the like and capable of performing position detecting, feed control, etc.

REFERENCES:
patent: 4620252 (1986-10-01), Bauck et al.
patent: 4945330 (1990-07-01), Arita

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