Terminal structure of switch

Abstract

In a terminal structure of a switch which is arranged in a manner that a terminal conductor,with a terminal screw drawn from the inner portion of the casing is disposed at every phase in the terminal portion of a casing formed by the three-divided structure of an upper cover,an intermediate cover,and a lower cover, and wires inserted into the terminal portion from the outside are respectively fastened by the screws to be coupled to the terminal conductors, the terminal conductors of the respective phases are pressed into the terminal fixing grooves,formed at the intermediate cover and fixed to the casing in a manner that the left and right side edges of each of the terminal conductors are pressed into the grooves. The terminal conductor of each phase is surrounded by a side wall,and an inter-phase partition wall,formed at the upper cover, and the fitting portion of the upper cover and the intermediate cover is defined at a portion lower than the terminal conductors thereby to enlarge the width of a space into which wires are inserted. Further, step portions,-,are formed at portions of the terminal fixing grooves so that two kinds of terminal conductors having different plate thickness can be selectively assembled in the intermediate cover.