Stepping motor

To provide an actuator which maintains high efficiency, can react to an increase in pole, has a high part fit, and can be manufactured at low cost while it is thinned. The actuator includes: a magnet which is formed in a ring shape, in which at least one surface perpendicular to a central axis there...

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Bibliographic Details
Main Author MIYAWAKI MAKOTO
Format Patent
LanguageChinese
English
Published 05.01.2011
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
ELECTROGRAPHY
GENERATION
HOLOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide an actuator which maintains high efficiency, can react to an increase in pole, has a high part fit, and can be manufactured at low cost while it is thinned. The actuator includes: a magnet which is formed in a ring shape, in which at least one surface perpendicular to a central axis thereof is divided in a peripheral direction and alternately plane-magnetized in different poles; a stator including a plurality of magnetic pole teeth opposed to the magnetized surface of the magnet; a rotor which is held to be rotatable about a rotational axis as a center, includes a disk portion whose surface perpendicular to the rotational axis is bonded to the magnet, and made of a soft magnetic material; and a coil which is located on substantially the same surface as that of the magnet, fixedto the stator, and excites the stator and the disk portion.
Bibliography:Application Number: CN20081137765