| 摘要 |
PURPOSE:To enable the interacting magnetic forces to be adjusted by a simple operation by a method wherein when a forward and backward movable member provided for entrance and exit between a pair of magnet members is positioned between the magnet members, a north pole and a south pole are formed on the faces opposed to the magnet members. CONSTITUTION:A pair of magnet members 11, 13 are provided on the ends thereof with tapered faces 11a, 13a, a north pole is formed on the tapered face 11a and a south pole on the tapered face 13a, and they are located movably upward and downward. A forward and backward movable member 15 having tapered faces 15a, 15a on the tip thereof enters and exits from the space A which is formed when the magnet members 11, 13 abut one another, a north pole and a south pole of magnet are vertically formed, and the front ends of these are exposed on the tapered faces 15a. When the forward and backward movable member 15 is inserted into the space A, the tapered faces 15a, 15a of the forward and backward movable member 15 are contacted with the tapered faces 11a, 13a of the respective magnet members 11, 13, so that the north pole and south pole of the forward and backward movable member 15 are simultaneously repulsed and attracted by the north pole of the magnet member 11 or the south pole of the magnet member 13. By adjusting the magnetic force of the forward and backward movable member 15, the magnet members 11, 13 can freely by moved outwardly. |
