| 摘要 |
<p>PROBLEM TO BE SOLVED: To make fine dimensional adjustment of copings by arranging the respective concave ends of two copings to face a joint ball to bring protuding parts into contact with the joint ball, and fixing the joint ball to one of the copings. SOLUTION: A joint ball 1 making copings continuous is fixed to the coping 5a with a concave end 2a by thread-fastening a bar-like core part 4 fitted to the joint ball 1, to the coping 5a. The coping 5b is fixed to a wall surface 8 by an adjustable bracket 9 so that the distance from the respective center parts of the joint ball 1 and coping 5b to the wall surface 8 is the same, and the coping 5a is fixed to the wall surface 8 by a bracket 6. The joint ball non- facing side ends of the copings 5a, 5b are made smooth face ends 7a, 7b since the extra dimensions are cut and adjusted to the required dimensions. Fine dimensional adjustment can therefore be made easily and optionally only by cutting the joint ball non-facing side ends of the copings.</p> |
