| 摘要 |
PROBLEM TO BE SOLVED: To improve a defect in a conventional floor board that it is hard to perform floor board connection work. SOLUTION: In floor boards 1 formed with a tongue 4 at one of the mutually facing edge parts of floor board bodies 3, and a groove 5 at the other, a lower sidewall 7 formed with the groove 5 is formed with a through hole 8 passing through vertically, and a connecting piece 10 is fitted in a vertically movable manner into the through hole 8. A recess 11 into which the upper part of the connecting piece 10 is fitted is formed at the lower part of the tongue, and the lower end of the connecting piece 10 is projected downward from the lower face of the floor board body 3 in a downward retreated state so that the connecting piece 10 does not collide/interfere with the tongue 4 when fitting the tongue 4 into the groove 5. COPYRIGHT: (C)2005,JPO&NCIPI
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