| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator that can ensure driving force for an operation target attached to the movable body, even though it is small in size.SOLUTION: An actuator 1 comprises: a fixing body 2; a movable body 3, which is linearly movable in a predetermined direction with respect to the fixing body 2; and a driving magnetic part 14 and a driving coil 15 for driving the movable body 3. The movable body 3 is formed in an approximately cylindrical shape having an inner periphery through which the movable body 3 moves. The driving magnetic part 14 is fixed to the fixing body 3 and arranged on the inner circumferential side of the movable body 3. The driving coil 15 is formed by being wound in an approximately cylindrical shape so as to surround the entire outer periphery of the driving magnetic part 14, and is attached to the movable body 3. The driving magnet part 14 has two driving magnet pieces 16 arranged so as to overlap in the moving direction of the movable body 3. The opposing faces of the driving magnet pieces 16 in the moving direction of the movable body 3 are magnetized to the same magnetic pole. |
