| 摘要 |
PROBLEM TO BE SOLVED: To structurally simplify fixing means of a resin bolt, and to improve workability thereof. SOLUTION: A spot facing hole 21 is bored with the same shape as a nut capable of inserting a resin nut 17 in communication with a bolt hole 15 at the lower part of an upper insulator 12b and a fixture 13. A main circuit conductor is put into the recesses 14a, 14b of the upper insulators 12a, 12b. Thereafter, the resin nut 17 is inserted into the spot facing hole 21, and a resin bolt 16 is put into the bolt holes 15 of the upper insulators 12a, 12b and is tightened up. As a result, the resin bolt 16 is automatically screwed into the resin nut 17, resulting in fitting the main circuit conductor only by the operation of the resin bolt 16. COPYRIGHT: (C)2008,JPO&INPIT
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