| 摘要 |
PURPOSE:To obtain an actuator having a high response characteristic owing to a reduced weight of movable part, wherein a pair of basic assemblies, each having a supporting spring made of a magnetic material and supporting a moving core and a driving coil wound on a stationary core, are combined such that the moving core is driven by the magnetic attracting force which acts between the magnetic portion and the magnetic supporting springs. CONSTITUTION:A pair of ring-shaped solenoids 7a and 7b are integrated with each other by means of a connecting material 15. A moving core 1 is received in the central bores of the solenoids 7a and 7b. The solenoid 7a is composed of a ring-shaped core 9a and a ring-shaped yoke 11a which define therebetween an annular space receiving a coil bobbin 10a accomodating a driving coil 8a. The moving core 1 is connected to the yoke 11a through a supporting spring 12 made of a magnetic material, such that a gap 14a is formed between the magnetic pole 13a of the core 9a and the spring 12. The other solenoid 7b has a construction which is identical to that of the solenoid 7a. The moving core 1 is driven in one and the other directions, respectively, when driving current is supplied to the driving coil 8a and 8b. |
