| 摘要 |
PROBLEM TO BE SOLVED: To provide a plug reducing the manufacturing cost by solving a fault that an elastic plug body is composed of two members of a lower side member and an upper side member and the manufacturing cost becomes expensive. SOLUTION: This plug is provided with a metal chain attachment shaft 3 having an axial center facing in the vertical direction and the elastic plug body 4 provided in the chain attachment shaft 3. The elastic plug body 4 is provided with a central member 6, an annular tapered member 7 connected to a height-direction intermediate part of the central member 6 and outward expanding toward the upper part, and an annular projecting edge 8 connected to the upper part of the central member 6. The tapered member 7 has its lower part connected to the central member 6, a clearance 10 is formed between its upper part and the central member 6, and the lower part of the chain attachment part 3 is embedded in the elastic plug body 4. COPYRIGHT: (C)2005,JPO&NCIPI
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