본 발명은 수평으로 위치된 링형상으로 중심부에는 배수관관통홀이 천공되어 있어 세면기의 하부돌출부를 관통하여 하방으로 돌출된 배수관 외주에 끼움결합되며 상면부에는 방사상으로 복수개의 밀착돌기가 돌출형성되어 있는 상부체결구와, 링형상으로 배수관의 외주에 끼움결합되며 상부체결구의 상면부에 위치되어 밀착돌기에 의해 세면기의 하부돌출부 저면에 수밀유지되게 밀착되는 밀폐패킹과, 상부체결구의 하면부에 위치되고 배수관의 숫나사부와 나사체결되면서 상부체결구와 밀폐패킹이 세면기의 하부돌출부 저면에 고정체결되게 하는 조임너트와, 상부가 개구된 통형상으로 상부체결구에 상부가 나사체결식으로 결합되며 하부에는 하부배관과 연결되는 배출구가 하방으로 돌출형성된 트랩케이싱과, 상부가 개구된 통형상으로 상부 외주면에는 방사상으로 복수개의 걸침돌기가 돌출형성되어 트랩케이싱의 내주면에 형성된 단턱 위에 올려지면서 상하 유동가능하게 설치되고 내측에는 개구된 상부를 통해 배수관의 하부가 위치되는 트랩부재로 구성된 것을 특징으로 하는 세면기용 트랩일체형 배수장치에 관한 것이다.

The present invention relates to a trap integrated drain device for a washbasin, which includes: an upper fastener having a ring shape in a horizontal direction, having a drainpipe penetration hole punched in a central portion thereof so as to be insert-coupled to an outer circumference of a drainpipe that protrudes downward by penetrating a lower protrusion part of the washbasin, and including a plurality of close-contacting protrusions radially protruding from a top surface thereof; a sealing packing having a ring shape, insert-coupled to the outer circumference of the drainpipe, and disposed on the top surface of the upper fastener to come into close contact with a bottom surface of the lower protrusion part of the washbasin by the close-contacting protrusions so that watertightness is maintained; a tightening nut disposed on the bottom surface of the upper fastener and screw-coupled to a male screw part of the drainpipe to allow the upper fastener and the sealing packing to be fixed and coupled to the bottom surface of the lower protrusion part of the washbasin; a barrel-shaped trap casing, of which an upper portion is opened and screw-coupled to the upper fastener, including an outlet connected to a lower pipe at a lower portion thereof to protrude downward; and a barrel-shaped trap member, of which an upper portion is opened, including a plurality of mounting protrusions that radially protrude from an outer circumferential surface of an upper portion thereof so as to be mounted on a stepped portion disposed on an inner circumferential surface of the trap casing and installed movable in a vertical direction, wherein a lower portion of the drainpipe is disposed inside the trap member through the opened upper portion of the trap member.