초록 ▼

An excellent optical fiber built-in type composite insulator including at least two insulator bodies each having a penetration bore, at least one optical fiber inserted in the penetration bores, and sealing structures for the penetration bores of the insulator bodies and for a joining layer of oppos

An excellent optical fiber built-in type composite insulator including at least two insulator bodies each having a penetration bore, at least one optical fiber inserted in the penetration bores, and sealing structures for the penetration bores of the insulator bodies and for a joining layer of opposing end surfaces of adjacent insulator bodies, is provided, which effectively prevents leakage of inner silicone grease, bending and breakage of the optical fiber, leakage of electric current along the penetration bores, short circuited trouble, and destruction of the insulator bodies, improves joining strength of the opposing end surfaces of the insulator bodies, and maintains the joining strength for a long period, affords a change of numbers of the insulator bodies, and facilitates the production. A method of producing such composite insulator is also provided.

대표청구항 ▼

An optical fiber built-in type composite insulator, comprising: at least two joined insulator bodies each having a penetration bore in a central axis portion thereof, said insulator bodies being stacked such that each said penetration bore is aligned; at least one optical fiber inserted in each said

An optical fiber built-in type composite insulator, comprising: at least two joined insulator bodies each having a penetration bore in a central axis portion thereof, said insulator bodies being stacked such that each said penetration bore is aligned; at least one optical fiber inserted in each said penetration bore; at least one space formed between opposing end surfaces of the insulator bodies for serving as at least one joining portion, each joining portion receiving an extended portion of the optical fiber extending from each said penetration bore, the extended portion of the optical fiber being joined at opposing end surfaces thereof in the joining portion; a gelatinous, foamy or rubbery sealing material filled in each said penetration bore for fixing the optical fiber, the optical fiber being guided spirally in the joining portion by the sealing material; and a connector metallic fitting having a perforation and being fixed on outer peripheral surfaces of opposing end portions of the insulator bodies by fixing opposing surfaces of flanges of the connector metallic fitting such that the opposing surfaces of the flanges of the connector metallic fitting protrude from the opposing end surfaces of the insulator bodies, wherein the connector metallic fitting and the insulator bodies define the joining portion such that the space of the joining portion has a radius larger than a minimum bending radius of the optical fiber and assures accommodation of the optical fiber therein.