| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a linear actuator that can obtain a large thrust force even when miniaturized and that is suitable for mass production, and a valve device. <P>SOLUTION: In the linear actuator 1 used for a valve device 100, a fixed body 3 is provided with a coil 33, and a fixed body side yoke 35 that surrounds the coil 33 from the outer peripheral surface to both sides in the axial direction of the coil 33 and whose ends 36a, 36b face each other in the axial direction via a slit 37 at the inner peripheral side of the coil 33. A movable body 5 is provided with a first movable body side yoke 51, a pair of magnets 53a, 53b stacked at both sides in its axial direction, and second movable body side yokes 55a, 55b at the end surfaces at the sides opposite to the first movable body side yoke 51. The magnets 53a, 53b are magnetized in the axial direction with same poles facing the first movable body side yoke 51. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
