POST STRUCTURE

PROBLEM TO BE SOLVED: To design for convenient storage/transport of a table, display case, etc. when not in use by quick removal of posts from a top plate and/or a base plate thereof.SOLUTION: A post structure in which a rotationally moving part is fitted into a stationary part wherein: a base configuring the stationary part is fastened to a top plate and/or a base plate, a short cylindrical interlocking projection juts out from the base, an insertion hole is drilled in the bottom face of the interlocking projection and helical surfaces that each slope gently are formed on both sides of the insertion hole; meanwhile, the rotationally moving part is fixed on the end of the post, a cross plate is made to bridge the post in the diameter direction almost at the end thereof, and a T-shaped locking rod is provided to stand substantially at the center of the cross plate; and by inserting the interlocking projection of the stationary part into the inner circumference of the post of the rotationally moving part while inserting the fastening rod of the T-shaped locking rod in the insertion hole of the bottom face and turning the post around the axis, the fastening rod is tightened onto the helical surface while the rotationally moving part is fastened to the stationary part. Grooves are provided on the helical surface at equal angular intervals in a radiating pattern.