| 摘要 |
<P>PROBLEM TO BE SOLVED: To finish a tripping operation of a tripping coil quickly by exciting the tripping coil. Ž<P>SOLUTION: A solenoid controller includes: a plunger 10 which is fixed to the outer portion of a shaft; an inputting coil 6 which makes the plunger move in the input direction; a tripping coil 7 which makes the plunger move in the direction for tripping; a tripping spring 11 which has a repulsive force in the tripping direction to the plunger; an attraction iron core 2 which is located in the input direction of the plunger and on the outer portion of the shaft; a yoke 9 which covers the outer surface of the inputting and tripping coils; a permanent magnet 5 which is located between the yoke and the attraction iron core to form a magnetic flux path passing through the plunger, the yoke, and the attraction ion core at the time of inputting operation completion; and an annular magnetic material 3 which is located between the inputting and tripping coils at a position where a magnetic flux density generated at the start of excitation for the inputting coil becomes larger than a magnetic flux density generated in the plunger. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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