Contact element for insulation pierce type

A contact element having a longitudinal axis, for an insulation piercing type connector for wire covered with an insulating sheath, comprising:

• a front member (1) and a rear member (18) disposed in fixed longitudinal relation to said front member, said front member including means for providing contact with a complimentary contact element belonging to another circuit;
• and
• said rear member including means for assuring connection with said wire, said rear member comprising a strip, said strip having a first extremity connected to said front member along said longitudinal axis and a second extremity, said strip having three folds, respectively along a first, a second and a third mutually parallel fold line, to form the shape of a parallelepiped, said fold lines being horizontally aligned perpendicular to said longitudinal axis, said strip including a horizontal first planar wall disposed at said first extremity and terminating at said first fold, a second planar wall extending between said first fold and said second fold, a third planar wall extending parallel to said first wall between said second fold and said third fold, and a fourth planar wall disposed at said second extremity and terminating at said third fold and first wall, said second and fourth walls having open slots formed therein for receiving, piercing and connecting said wire, an opening being formed in said strip in one of said first and second extremities, and means for closing said parallelepiped, said closing means comprising a tenon projecting from the extremity other than said one of said extremities and capable of penetrating said opening.