| 摘要 |
A construction for use in knockdown structures comprising a tubular leg, a cross-bar, and a locking member. The tubular leg has an anchoring member fixed within it adjacent one end. At least one slot is provided in the wall of the leg between the anchoring member and the one end. The cross-bar has a tab that slides into the slot and hooks onto the wall of leg. The locking member cooperates with the anchor member to hold the tab, and thus the cross-bar, in hooked position.
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