RELATIVE ROTATION SUPPRESSION STRUCTURE, RELATIVE MOVEMENT SUPPRESSION STRUCTURE AND RELATIVE MOVEMENT SUPPRESSION BODY OF SCREW BODY

摘要

PROBLEM TO BE SOLVED: To exhibit a reliable looseness prevention effect, and suppress fatigue of a shaft of a male screw in a detachable manner.SOLUTION: A relative rotation suppression structure 30 is a relative rotation suppression structure to a counterpart member, in a screw body 101 with a screw part. The relative rotation suppression structure comprises: a counterpart side displacement part 40 formed in the counterpart member in advance, and displaced in an axis direction or radial direction; and a screw body side deformation allowable part 50 formed in the screw body 101, pressing against the counterpart side displacement part with fastening force, to enable self-deformation, and forming a screw body side displacement part 60 with the deformation, the screw body side displacement part displaced in the axis direction or radial direction.SELECTED DRAWING: Figure 10