| 摘要 |
PROBLEM TO BE SOLVED: To attain the further downsizing, lightening, and price down of a motor. SOLUTION: The yoke of a motor is constituted of a pair of split yokes 51 to 54 surrounding an armature core 4, a pair of plate-shaped magnets 6 are arranged symmetrically across a rotor shaft 3, and the magnet is sandwiched by adjacent flanges 51a to 54a provided at one end of the split yoke. Since the yoke can be minimized in the outside diameter of a section where the magnet is not arranged by an amount equivalent to the thickness of the magnet, a length in that direction can be shortened. The yoke can improve mounting space efficiency by making a short section correspond to the narrow point of the mounting target of the motor device. COPYRIGHT: (C)2008,JPO&INPIT
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