| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain plug device having improved mounting workability and maintainability.SOLUTION: A drain plug device 1 includes a drain port member 2 having a first male screw part 22 to be threaded to a female screw part 102A, and holding a bathtub 100 between a pipe 102 and itself, a ring member 3 having a second male screw part 31, and arranged below the drain port member 2, a supporting mechanism 5 supporting a plug cover 6, and an attachment member 4 having a holding part 41 and an arm part 42 mounted on the ring member 3. The drain port member 2 has a locking part 24 engageable with a locked part 32 of the ring member 3, and both male screw parts 22, 31 have equal screw pitches. In the state that the locking part 24 engages with the locked part 32 and the lower face of the drain port member 2 contacts the upper face of the ring member 3, the screw threads of both male screw parts 22, 31 show a continuous spiral shape. The attachment member 4 can be mounted/removed on/from the ring member 3 through the upper side of the drain port member 2. |
