| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnet device capable of easily adjusting holding power of a permanent magnet.SOLUTION: The electromagnet device includes: a fixed iron core; a movable iron core which is disposed being opposed to the fixed iron core and to which a drive shaft 9 is fixed so as to displace in an axial direction of the drive shaft 9 between a retreat position and a forward position; an electromagnetic coil 10; a permanent magnet 11 for holding the movable iron core in a forward position; plural posts 12 which are disposed at both sides of the fixed iron core in parallel to each other in the axial direction to support the fixed iron core; and an open-side plate 13 and a close-side plate 14 disposed onto the posts 12 to support the drive shaft 9 penetrating therebetween. The forward position of the movable iron core is limited by the fixed iron core; and the retreat position is limited by the open-side plate 13. The electromagnet device also includes a holding power adjustment member 29 that adjusts the holding power of the permanent magnet 11. |
