| 摘要 |
This invention provides an electromagnetic actuator, and a solenoid-valve device provided therewith, that makes it possible, with a simple structure, to reduce the size, weight, and cost of said device. An electromagnetic-actuator section (30) of this solenoid-valve device (1) contains fixed pole pieces (43a, 43b, 43c) for the middle (43) of three fixed poles (41, 42, 43) and coils (45a, 45b, 45c) wound around said fixed pole pieces (43a, 43b, 43c). The winding directions of said coils (45) are the same. A movable element (50) has three stable points at which said movable element (50) can be held stationary with the coils (45) de-energized; namely, first and second stable points (L1-1, L1-2) corresponding to the fixed poles (41, 42) on both sides in the axial direction and a third fixed point (L1-3) corresponding to the central fixed pole (43). |
