Base structure of retainer

摘要

A base structure of a retainer comprising operation section supporters 2 which have plural locking sections 5 formed at prescribed intervals on flat surfaces of a flat and vertically long board-like material and a pair of shelf board supporting members 3 which are in engagement with the operation section supporters 2, slidable in the vertical direction and provided with movable locking pieces 11 removably engaged with the locking sections 5 of the operation section supporters 2, wherein the movable locking pieces 11 are automatically engaged with or removed from the locking sections 5.