| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screw looseness preventive structure capable of preventing looseness of a screw by quick work, while reducing cost by reducing the number of part items. Ž<P>SOLUTION: In this screw looseness preventive structure 1, a looseness preventive means 2c is arranged in a tie-bolt 2 having a male screw part 2a. Since the end part side of the male screw part 2a is deformed so as to be brought into pressure contact with a female screw part 3a arranged on a shaft 3 by rotating centrifugal force in a state of threadedly engaging the male screw part 2a with the female screw pat 3a by relative rotation of the tie-bolt 2 and the shaft 3, tensional force can be generated so as to be mutually fixed between the end part side of the male screw part 2a and the female screw part 3a. Thus, since looseness of the screw can be prevented without arranging the other separate member of the tie-bolt 2 and the shaft 3, cost can be reduced by reducing the number of part items, and since the looseness of the screw is prevented by rotating the threadedly engaged tie-bolt 2 as it is, the work can be quickened. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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