| 摘要 |
<p>PURPOSE:To contrive the prevention of a stud bolt from its position displacement and loosening by providing a mounting hole for the stud bolt while arranging an elastic stopper piece in both sides of the mounting hole and forming a stopper protrusion in the elastic stopper piece in its opposed facing surface, in a stopper tool main unit. CONSTITUTION:A stopper tool main unit 1 provides a mounting hole 4 abl to insert a stud bolt B and arranges elastic stopper pieces 6, 7 in both sides of the mounting hole 4. These two or more pairs of elastic stopper pieces 6, 7 can be elastically spread by an external thread of the stud bolt B, while forming stopper protrusions 6a, 7a, mounted to be stopped to the external thread of the stud bolt B, in an opposed surface of the stopper pieces. Further the elastic stopper piece adapts its stopper protrusions 6a, 7a to the stud bolt B, setting the arranging pitch so as to enable the movement to be inhibited in the lengthwise direction of the mounting hole 4. As the result, the stopper tool main unit can be prevented from its looseness while facilitating mounting work of the stud bolt.</p> |
