| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint device for floor that efficiently prevents right and left floor skeletons from swinging owing to an earthquake narrowing a joint part to protrude upward from a floor surface and also prevents the right and left floor skeletons from swinging widening the joint part to form a large step between a tip part of a cover plate and the floor surface.SOLUTION: A joint device for floor including a cover plate 13 which has a front end part supported to cover a joint plate slide support recessed part 5 formed in one floor skeleton 3 and a rear end part fitted to the other floor skeleton 3 through a fixture 12 so that the front end part can rotate upward is provided with a cover plate recessed part 7, formed on a floor surface of the one floor skeleton that the front end part of the cover plate 13 abuts against, and having an inclined surface on a non-joint-part side capable of supporting an upper surface of the cover plate and an upper surface of the one floor skeleton in level without any gap and a guide piece which guides a front end part of a joint plate 11 for floor by a thickness of the cover plate on an inclined surface side of the joint plate slide support recessed part 5. |
