Patent ID: 6075210
Filing Date: 2000-06-13
Classification: H01B

Abstract:
Polymer insulator which is characterized by a rod having on its outer surface an umbrella-like housing or insulator layer and having end portions which are formed so as to be freely expanded with at least one splitting groove; a fixture means having a mounting hole in which said end portions of said rod are inserted and which has an inner surface tapering inwards against which the outer surface of said rod abuts in its expanded state; and a wedge means fixed in said mounting hole, said wedge means being inserted into said at least one splitting groove formed in the end portions of said rod when said end portions of said rod are mounted into said mounting hole of said fixture means, the top end of said wedge means having an engaging portion which is held in said at least one splitting groove thereby to cause, said engaging portion to increase the engaging force with the inner surface of said at least one splitting groove when said wedge means is engaged in said at least one splitting groove.