Drain board installing device without anchor plate

摘要

An object of the present invention is to provide a drape material temporary fixing device capable of embedding a drape material in the ground without an anchor plate. The drain material temporary fixing device 246 of the present invention has a dolmus 421 which is formed on the inner wall of the lower through hole of the drain casing 304, and one end is fixed to the bulge and the other end is outside the through hole of the drain casing. A wire rod 433 and a shielding rod 435 fixed to the other end of the wire rod, When the shielding rod is lowered as far as the lower end of the drain casing by its own weight, the shielding rod is configured to maintain a state spaced apart from the lower end of the drain casing, the shielding rod is spaced a predetermined distance from the lower end of the drain casing State It is comprised so that a predetermined angle rotation is possible in the longitudinal direction of the said drain casing.