Importance

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Abstract

A foldable bed has a joint, which has a main body, a block up and down movably fitted to the body, two supports pivoted to the body, and two plates; two rods of a frame of the bed are pivoted to the body; the block is biased to a lowermost position by a spring, and the bed can be folded only when the block is kept in a highest position; the supports will be made to engage the block by the rods immediately after the bed is stretched, thus preventing the block from moving to the highest position; the plates are co-movable with the rods, and can make the block kept in the highest position immediately after at least one rod part is folded; thus, after the block is moved to the highest position, the rods can be folded one after the other without having to operate the block twice.

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First Claim