Step motor for a driving mechanism of camera

A step motor mounted inside a camera for moving a driven member is disclosed to include a yoke iron, which has a base, two arms respectively extended from two sides of the base, and four magnetic poles respectively formed on the free ends of the arms and each junction between the base and the arms,...

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Bibliographic Details
Main Author HUANG TIENUNG
Format Patent
LanguageEnglish
Published 29.12.2009
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:A step motor mounted inside a camera for moving a driven member is disclosed to include a yoke iron, which has a base, two arms respectively extended from two sides of the base, and four magnetic poles respectively formed on the free ends of the arms and each junction between the base and the arms, two windings respectively surrounding the two arms of the yoke iron, a magnet, which is rotatably floating among the magnetic poles of the yoke iron by a magnetic force has sectors of different magnetic poles abutted against one another, and a crank, which is coupled to and rotatable with the magnet and has an actuating axle connected to the driven member of the camera for moving the driven member upon rotation of the magnet.
Bibliography:Application Number: US20070653993