| 摘要 |
PROBLEM TO BE SOLVED: To obtain oscillation with only an armature core, and sufficiently drive an oscillation motor at a low voltage, by overcoming the drawback of two-salient pole type, and reducing cogging torque while a shift amount of the center of gravity is made larger. SOLUTION: An oscillation motor includes field magnetic pieces 1 made up of a plurality of magnetic poles, a housing (H) for storing the magnetic pieces 1, and an eccentric armature core 34. The eccentric armature core 34 is constituted of two magnetic material salient poles 3a and 3b, in which blades (a and b) for receiving the magnetic flux of the field magnetic pieces 1 are made to face each other, while a positional opening angle is made eccentric, and its winding is turned eccentrically and the winding is not put in a normal direction from the center, and non-magnetic salient pole 4 with a blade part provided between two salient poles for holding the salient poles 3a and 3b, in which at least the blade part is made of a non-magnetic material. In addition, the oscillation motor includes an axle (J) for supporting the eccentric armature core 34, armature coils 51 and 52 wound at least two magnetic salient poles 3a and 3b, a commutator 6 connected with a terminal line of the armature coil 51 or 52, and a brush 8 which is slid on the commutator 6.
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