| 摘要 |
PURPOSE:To eliminate invasion of water into a nose upon strong washing and to obviate a decrease in optical input/output by branching an elastic insertion unit to be engaged within a front chamber of a transceiver to a forked state, and forming holes for noses at the branched parts. CONSTITUTION:An elastic insertion unit 11 to be inserted into the opening of a front chamber 3 of a casing is branched to a forked state, and holes 14a, 14b for noses are formed at the branched parts 11a, 11b. Accordingly, even if the holes 14a, 14b are not severely coincident in size with the noses 5, 6, an error is absorbed by the elastic deformations of the parts 11a, 11b themselves to be branched in the forked state, and the engaging states of the noses 5, 6 with the holes 14a, 14b are improved. Deterioration of close contact engaging state based on the difference of thermal expansion coefficients of the noses 5, 6 and the holes 14a, 14b are eliminated by the elastic deformations of the parts 11a, 11b. Further, the outer periphery of the root side of the unit 11 is formed at a close contact sealer 15 in close contact with the inner periphery of the opening of the chamber 3. Thus, in the case of washing, invasion of water into the noses and a decrease in optical input/output are eliminated. |
