| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a repair method and a drainage structure of drainage hardware capable of holding a satisfactory state of an internal wall of a bowl body for a long time. <P>SOLUTION: This repair method includes a process for cleaning the inside of a drainage hardware body 30, a process for forming an extended drain passage part by covering an outer side of an inner cylindrical part 301 with a cylindrical external auxiliary pipe 18 after the cleaning process and forming the extended drain passage part 52 connected with an old drain passage part 51 on an inner peripheral side of the inner cylindrical part 301 and extended upward from an upper end face of the inner cylindrical part 301 on an inner peripheral side of the external auxiliary pipe 18, a process for forming a flow-in part 2 by applying a filler on an outer side of an upper end part of the external auxiliary pipe 18 to let drainage flow into an upper end opening part of the external auxiliary pipe 18, and a process for forming a trap by arranging a valve member 10 in the upper end opening part of the external auxiliary pipe 18. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
