| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor joint device which is a joint plate using a plurality of joint covers, available even at a place where a high load is applied, capable of setting an elongation/contraction range that is a 1/2 width dimension or more of a joint part, and absorbing motions even if right and left skeletons move in different longitudinal and lateral directions.SOLUTION: A joint plate 12 comprises: two or more V-shaped triangular lattice-like elongating/contracting support link mechanisms 5 in which a plurality of pivot parts 4 positioned in a joint part between skeletons 2 are located on the same surface; a fixture 7 which is pivoted by the pivot parts 4 in both ends of the V-shaped triangular lattice-like elongating/contracting support link mechanism 5 in a vertically and horizontally rotatable manner; guide cylinders 8 mounted to the pivot parts 4 in both the ends of the V-shaped triangular lattice-like elongating/contracting link mechanism 5; a plurality of support bars 10 each including a shaft 9 which is inserted into the guide cylinder 8 in a rotatable manner; and a plurality of joint covers 11 covering the joint parts to which the rear end portions are mounted and which are overlapped with each other and move while sliding. |
