| 摘要 |
PURPOSE: A drainage trap unit for floor drainage is provided to reduce installation expenses by recycling a waterproof waster hole cover required to install a drainage trap, to reduce an inefficient construction period such as re-concreting work by keeping level if a worker steps down on a drainage trap, to maximize productivity by installing a drainage trap unit rapidly and exactly, and to manage manpower effectively. CONSTITUTION: A drainage trap unit comprises; a fixed bracket(100) comprising clinchers(120,120') on the upper and lower parts, a snap coupler(110) formed in a trivet shape and keeping a preset angle of 120 degrees from the outer circumference of a body(140), and a hook(111), of which the end is locked, extended perpendicularly, formed on the endmost part in one; a drainage trap(200) comprising several locking grooves(215) installed around the outer circumference of a main body(210), a projection(211) installed around the upper part of the main body, inflow holes(213) cleaved in the rectangular shape formed at 120-degree intervals on the outer circumference of a vertical member(212), projected pieces(214) having a cutting line(t) at 120-degree intervals projected in one on the alternated location between the inflow holes, an internal screw part(216) formed on the top-inner circumference of the main body and a locking projection(217) installed around the lower part; a waterproof waster hole cover(300) comprising a body part having an external diameter where an external screw is formed to be tightened to the inner circumference of the main body, an upper through hole(340) connected with an insertion pipe(320) inserted into a drain(220) to make the diameter of the through hole smaller than the diameter of the insertion pipe, and a stopper coupled to the through hole.
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