| 摘要 |
The adjacent edge surfaces of prefabricated building panels have opposing undercut recesses of dovetail configuration and are rigidly connected and sealed by an elongated tubular joint device including a pair of opposing rigid V-shaped sidewalls connected by a pair of opposing flexible base walls each having a set of rigid sections. The joint device is formed as a polypropylene extrusion with the sidewalls and base wall sections integrally connected by thin web hinges, and is expandable from a collapsed position facilitating insertion into the recesses to an extended position where the sidewalls clamp the panels together in response to flexing of the base wall sections to overcenter locking positions. In another embodiment, only one of the panels has an undercut recess, and integral hinges connect the sidewalls of the joint device to the adjacent panel.
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