Electrical plug housing with a keying device for an electrical contact element to be inserted into a contact chamber of the plug housing

摘要

An electrical plug housing with a keying device for inserting a contact element into a contact chamber of the plug housing. The contact chamber has a square cross section preceded by a sealing chamber of round cross section. An inbound contact element encounters a keying element between the sealing and contact chambers for proper alignment. The frontal edges of the keying elements are slanted to form a blunt cone- shaped funnel for aligning the contact element.