| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain cap which is free from a fear of overturning without screwing a cap body to a structure. SOLUTION: The drain cap is formed of the cap body 1 for blocking a drain port 3 formed in a floor 2 in a water flowable manner, a rod member 4 protruding downward from the center in the cap body 1, and a plurality of sets of spring plates 9, 10 which are mounted on a lower end of the rod member 4 such that each upper spring plate and each lower spring plate pair up each other, and extend in a radial direction of the cap body 1. Herein the upper-stage spring plate 9 rises from the lower end of the rod member 4 like a crank and extends outward in a radial direction of the cap body 1 over a predetermined length, followed by bending downward. On the other hand, each lower-stage spring plate 10 overhangs over a length at least longer than a radius of the drain port 3. COPYRIGHT: (C)2006,JPO&NCIPI
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