| 摘要 |
A collapsible sawhorse includes a channel-shaped beam having a hollow interior and a pair of leg assemblies attached to the beam at opposite ends thereof. Each leg assembly includes a bracket which is attached to the beam, a block which is connected to the bracket for pivoting about an axis transverse to the beam, and a pair of legs which are attached to the block for pivoting about an offset axis which extends crosswise with respect to the transverse axis. The legs of each leg assembly move toward and away from the hollow interior of the beam when the block of that assembly pivots about the transverse axis, while the legs move toward and away from each other when pivoted about the offset axis. The legs of each leg assembly may be brought to a folded condition in which they are located side-by-side and in this condition they will fit into the interior of the beam. When the sawhorse is erected, the legs of one of the leg assemblies are fixed with respect to the block of that assembly in that they cannot pivot with respect to that block about the offset pivot axis or the beam, but the legs of the other leg assembly can pivot with respect to the block of that leg assembly, again about the offset pivot axis. This enables all four legs to come to rest on a floor so that the sawhorse assumes a stable position, even if the floor is uneven.
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