| 摘要 |
PURPOSE:To increase magnetizing efficiency and stabilize an attraction force by applying an arc shape to both ends of a U-shaped iron core and a U-shaped armature for enabling the mutual contact thereof with each other. CONSTITUTION:A movable contact point spring 6 having a movable contact point 4 and a hinge spring part 5 is arranged at both sides of a U-shaped armature 3, and monolithically fixed via an insulation fixing body 7, thereby forming a movable contact point block. Also, a coil is wound about a coil spool 9 with a U-shaped iron core 1 and a coil terminal 8 embedded therein, and a magnetic piece 11 as the support point of the tilting motion of a permanent magnet 10 and the armature 3 is fixed to a permanent magnet mounting hole 18, thereby forming a coil assembly body. Thereafter, the coil assembly body is coupled and fixed to the inside of an insulation body seat 16 and then a coil terminal 8 and a coil lead terminal 15 are connected to each other. In this case, both ends of the U-shaped iron core 1 and the U-shaped armature 3 are made to have an arc shape respectively, thereby increasing a magnetic pole area. |
