DRAIN STRUCTURE OF LOWER FRAME

摘要

PROBLEM TO BE SOLVED: To provide a drain structure of a lower frame for reducing generation of residual water in a drainage ditch by efficiently draining bath water from a drain hole by the water inducing action (viscosity). SOLUTION: A door frame for installing a door 13 for opening-closing the doorway is arranged in the doorway of a bathroom A communicating with an adjacent room B. The drainage ditch 2 for allowing the inflow of the bath water of an upper surface of the lower frame 1 is arranged in the longitudinal direction in the lower frame 1 of the door frame. The drain hole 3 is bored in the groove bottom 2a of the drainage ditch 2 for draining the bath water flowing in the drainage ditch 2. A projection piece 4 substantially parallel to the groove bottom 2a of the drainage ditch 2 is projected in the longitudinal direction of the drainage ditch 2 toward the inside of the drainage ditch 2 from a part in the vicinity of the groove bottom 2a in a groove wall 2b of the drainage ditch 2. A drainage ditch water collecting part 5 is constituted for collecting the bath water flowing in the drainage ditch 2 by the water inducing action to clearance formed between the projection piece 4 and the groove bottom 2a of the drainage ditch 2. COPYRIGHT: (C)2005,JPO&NCIPI