| 摘要 |
PROBLEM TO BE SOLVED: To provide an airtight/dustproof cover which has airtightness and dustproofness and through which a plurality of wires with different outer diameters can be inserted. SOLUTION: A cover main part 20a which has a box-type front part is so formed as to accommodate three buried wiring appliances with standardized unit dimensions in continuous arrangement. Television wire insertion cylinders 21 through which television wires are inserted, IV wire (600V grade polyvinyl chloride insulated wire) insertion cylinders 22 through which IV wires are inserted and telephone wire insertion cylinders 24 are made to protrude from the bottom surface of the wiring appliance housing 23 of the cover main part 20a. The inner diameters of the respective wire insertion cylinders 21, 22 and 24 are so designed as to have the television wire, the IV wire and the telephone wire inserted without gaps. Thin parts 21a, 22a and 24a for knock-out are formed in the respective wire insertion cylinders 21, 22 and 24. A flange part 25 is formed around the opening of the cover main part 20a. |
