| 摘要 |
PROBLEM TO BE SOLVED: To provide a temporary fixation device which enables a screw to be fixed securely, without causing a tilt and moreover facilitates penetrating through work of a screw and, moreover, which can be used repeatedly many times. SOLUTION: This device is equipped with a member 4 to be attached, a screw 35 having spirally wound screw threads 40, and a temporarily fixation jig 45 attached in a through-hole 36 in the member to be attached and temporarily fixing the screw 35 to the member 4 to be attached. The temporary fixation jig 45 contains a tubular body 46 which is held in the through-hole 36 and through which the screw 35 can be put, and a plurality of temporary fixation pieces (50a, 50b, (50c), 50d arranged side by side circumferentially on an inner surface of the body 46 and projecting towards the inside of the body 46. These fixation pieces each have an end edge part making contact with a root 40a between the treads 40, and a length from the end edge part of each of the temporary fixation pieces to the inner surface of the body 46 is determined so as to become larger toward a temporary fixation piece on the front side in the rotational direction, at the time of fastening the screw 35 with the length of one temporary fixation piece used as a reference. |
