PROBLEM TO BE SOLVED: To provide an accordion-type construction wherein the construction has a simple structure, tunnel supports are easily movable, opening and closing of a covering material connected to the supports is light and convenient, and the construction can be used as a vinyl greenhouse, a warehouse, or a workplace. ! SOLUTION: Provided is an accordion-type construction wherein tunnel-like supports are erected, the construction is provided with a covering material which is connected to the supports and covers their outside, intermediate supports of the supports are movable in the tunnel axis direction, and the covering material is arranged to be capable of being unfolded or folded in conjunction with move of the intermediate supports. The accordion-type construction is characterized in that channel steels which have an upward opening and are extended between both end supports of the supports are fixed to both leg parts and a central top part of both the end supports, and casters attached downwardly to both leg parts and a top part of each of the intermediate supports are fitted into the channel steels through the opening for each of the intermediate supports to be movable. ! COPYRIGHT: (C)2014,JPO&INPIT
