| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnet apparatus capable of increasing magnetic attraction force to save energy required for the electromagnet. SOLUTION: A first plunger shaft 44 more quickly arriving at an adjusting spring 49 among released plunger shafts 44 presses a communication part 23 for electromagnet while resisting spring pressure of the adjusting screw 49. During that time, a second plunger shaft 44 presses the adjusting spring 49 more late than the first plunger shaft 44. Consequently, press force produced at a plurality of electromagnet apparatuses 3A, 3B is transmitted to the communication part 23 for electromagnet via the adjusting spring 49, so that magnetic attraction force of each electromagnet apparatuses 3A, 3B can be enough demonstrated to save energy of the electromagnet. COPYRIGHT: (C)2008,JPO&INPIT
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