| 摘要 |
PROBLEM TO BE SOLVED: To obtain a joint device for a floor for preventing the upward protrusion even when a joint part is narrowed, smoothly moves to follow a substantial change in a dimension of the joint part, and absorbs the movement. SOLUTION: The joint device for the floor comprises at least two or more extendable supporting bodies both ends of which are each pivoted to the parts on the joint sides of right and left skeletons provided by the intermediary of the joint part 2, a plurality of bar members 6 parallelly arranged on the extendable supporting bodies 5 at predetermined intervals, and at least two or more pantograph-like extendable links 8, both ends of each of which are pivoted to pivotal parts where the bar members 6 are pivoted. The ends of the extendable links 8 are pivoted to the bar members arranged at both ends or pivoted to the joint sides of the right and left skeletons. COPYRIGHT: (C)2005,JPO&NCIPI
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