SELF-RETAINING TYPE SOLENOID VALVE

摘要

PROBLEM TO BE SOLVED: To provide a self-retaining type solenoid valve capable of downsizing the whole of a device and realizing low power consumption. SOLUTION: The self-retaining type solenoid valve is provided with a single coil 34 wound to a bobbin 36 in the same direction; a movable iron core 42 disposed coaxially with a fixed iron core 38; a first spring member 40 for urging the movable iron core 42 to the direction wherein the core is separated from the fixed member 38; and an annular permanent magnet 46 attached to such a position as the end of the fixed iron core 38 and the end of the movable iron core 42 are opposed to each other and arranged so as to surround the outer periphery at a part of the fixed iron core 38 and the movable iron core 42.