Patent ID: 7241178

Claim:
An electrical plug-and-socket connection with a male plug that includes at least two contact pins each having a metallic core and an electrically conducting section, which contact pins are linked to a base body of a plug-in aperture which connects to a plug-in section of a female plug, and connection of the male and female plugs is accomplished by inserting the electrically conducting sections of the contact pins into contact apertures of the front side of the plug-in section of the female plug, and where a section of every contact pin that connects immediately to the base body of the plug-in aperture is circumferentially insulated by a collar that is connected by being of identical material with the base body of the plug-in aperture, characterized in that the collar has a frustum-shaped mantle surface and when plugged together is in uninterrupted circumferential contact with an edge section of the walling of the contact aperture of the female plug at least in some areas; wherein the collar surrounds a section with reduced cross-section of the metallic core of the contact pin; and wherein the mantle surface of the collar changes over without irregularity to the mantle surface of the electrically conducting section of the contact pin.