| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint device for a floor, hardly being damaged, usable over a long period, and reducing a clearance between a rear end part of a joint plate and an end part opposite to a joint part of a joint plate support recessed part, while smoothly rotating a tip part of the joint plate in the vertical direction, and regularly arranging and fixing a floor decorative sheet on and to an upper surface of the joint plate.SOLUTION: A joint device 1 for a joint plate floor comprises: a joint plate slide support recessed part 5 which is formed in one joint part side floor skeleton 3 and in which the side opposite to the joint part is formed as an inclined plane 4; a joint plate support recessed part 6 formed in the other joint part side floor skeleton; a joint plate body having no pin case on rear part both-side upper surfaces in which the rear end part thereof is supported by the joint plate support recessed part and the tip part thereof is supported so as to cover the joint plate slide support recessed part; and a pair of support pieces 11 provided on both-side bottom surfaces near the rear end of the joint plate body so as to project to a joint part and also having a return part formed in an arc shape in which the front upper part protrudes to the joint part 2 beyond the front lower part. |
