US Patent 10148030 Insulating body for an electrical plug connection unit

An insulation body for an electrical connector unit includes at least two insertion channels into each of which a contact pin or a contact bush can be inserted, which preferably are aligned parallel to a main axis of the insulating body into which a securing channel empties, preferably perpendicular to it, in which a set screw is supported so as to turn, by means of which the related contact pin or the related contact bush can be mechanically impinged on, and to which an insulating collar is assigned, which is arranged on the outer side of the insulating body, at least approximately coaxial to the related securing channel. Preferably each of the insulating collars has at least one collar opening that is limited on both sides by collar ends.