| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator device in which the durability is improved and a response velocity and electric current consumption are stabilized by reducing translational force in the rotary axis direction accompanying the switching operation of the actuator device for an optical switch. SOLUTION: A permanent magnet are provided composing a part of a rotary body and a first and second yokes having a bent part which are extended from a point in the vicinity of an end of the permanent magnet to a position beyond the other end of the permanent magnet and have bent parts which are bent in the rotary axis direction at respective extended ends, thus, a closed magnetic circuit is formed between the permanent magnet and the first or the second york when the rotary body takes a first posture or a second posture, and the force acting on a position in the vicinity of an end of the permanent magnet and the yoke, and the force acting on the other end of the permanent magnet and the bent parts take opposite direction when the rotary body moves from the first posture to the second posture, or from the second posture to the first posture. COPYRIGHT: (C)2005,JPO&NCIPI |
